Indian & Physical Geography: Concise UPSC Notes, Key Topics & Quick Revision

    Indian Geography is crucial for UPSC. These concise notes cover geomorphology, climatology, oceanography, Indian physiography, monsoon & climate, drainage, soils, natural vegetation, agriculture, minerals & industries, population & settlement, transport and disaster management, with revision tips and practice MCQs.

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    Indian & Physical Geography

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    The Universe and the Earth

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    Indian Geography - introduction, Geology

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    13 topics

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    19

    Indian Agriculture

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    Chapter 19: Indian Agriculture

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    22 topicsEstimated reading: 66 minutes

    Land Use Categories in India

    Key Point

    The Agricultural Statistics (1949) classified land in India into 9 categories. These categories are recorded in Land Revenue Records and reflect how land is used in agriculture, forestry, settlements, and other purposes.

    The Agricultural Statistics (1949) classified land in India into 9 categories. These categories are recorded in Land Revenue Records and reflect how land is used in agriculture, forestry, settlements, and other purposes.

    Detailed Notes (6 points)
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    Overview
    9-fold classification of land in India was first introduced in 1949.
    Maintained in Land Revenue Records by the Ministry of Agriculture.
    Reflects share of forests, agriculture, fallows, wasteland, and settlements.
    Net sown area is the largest category, covering about 42.4% of land.
    Forest cover (24.62%) is crucial for ecology, biodiversity, and livelihoods.

    Land Use Categories in India

    CategoryShare (%)Details
    Forests24.62%Forest cover indicates presence of trees; Forest area means legal status in government records.
    Net Sown Area42.4%Land used for sowing and harvesting crops; 3–4 crops grown annually.
    Misc. Tree Crops1%Privately owned cultivable land with orchards, bamboo, bushes, etc.
    Non-Agricultural Uses8.7%Settlements, industries, roads, canals, ponds, shops, railways.
    Permanent Pastures & Grazing Land3.92%Owned by Panchayat/Government; used for grazing; part of CPR.
    Barren & Uncultivable Land5.5%Unfit for cultivation; includes deserts, ravines, hilly terrain.
    Current Fallows4.9%Left uncultivated for less than 1 year; soil fertility restored naturally.
    Other Fallow Land3.6%Left uncultivated for more than 1 year but less than 5 years.
    Culturable Waste Land4.41%Not cultivated for 5+ years; can be reclaimed through improvements.

    Important Concepts – CPR vs Public Resources

    ParameterCommon Property Resources (CPR)Public/State Resource
    OwnershipOwned by state; communities get ‘use rights’, may/may not have collective ownership.Exclusively owned by state; people not excluded from enjoying.
    ExamplesPanchayat village lands, community-owned canal irrigation.Marine fisheries in EEZ, national highways.

    Mains Key Points

    Land use pattern highlights the dominance of agriculture in India’s economy.
    Forests play dual role: ecological balance + livelihood security.
    Fallow and wastelands show scope for increasing agricultural productivity via reclamation.
    Non-agricultural land use reflects rapid urbanization and industrialization.
    CPR and public resources distinction is vital for governance and equitable access.

    Prelims Strategy Tips

    Land use classification in India introduced in 1949.
    Net sown area is the largest share (42.4%).
    Forests cover 24.62% of total land.
    Culturable waste land = land not used for 5+ years but reclaimable.
    Permanent pastures & grazing land = Common Property Resources (CPR).

    Indian Agriculture – Agricultural Land Use

    Key Point

    India has a geographical area of 328.7 million hectares (2016–17). Out of this, 139.4 million hectares is the net sown area (42.4%), and 200.2 million hectares is the gross cropped area, with a cropping intensity of 143.6%. Agriculture contributes ~17.8% of India's GVA (2019–20).

    India has a geographical area of 328.7 million hectares (2016–17). Out of this, 139.4 million hectares is the net sown area (42.4%), and 200.2 million hectares is the gross cropped area, with a cropping intensity of 143.6%. Agriculture contributes ~17.8% of India's GVA (2019–20).

    Detailed Notes (10 points)
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    Agricultural Land Use
    Total geographical area: 328.7 million hectares.
    Net sown area: 139.4 million hectares (42.4% of total).
    Gross cropped area: 200.2 million hectares.
    Cropping intensity: 143.6%.
    Agriculture & allied sectors: ~17.8% of GVA (2019–20).
    Significance
    Provides livelihood to more than 55% of Indian population.
    Contributes significantly to food security and rural employment.
    Backbone of Indian economy with strong forward and backward linkages.

    Natural Parameters Affecting Agriculture

    ParameterDetails
    Topography & SoilDifferent soils and landforms support diverse crops; tea in hilly, drained soils; cotton in black soils (Deccan, Malwa).
    Climate (Rainfall & Temperature)Agriculture is monsoon-dependent; rice needs hot-humid climate (100+ cm rainfall); wheat needs cool climate.

    Socio-Economic Parameters Affecting Agriculture

    ParameterDetails
    Land RelatedSize of holdings affects investment capacity; smaller farms mean higher input costs per unit. Land tenancy reforms provide tenure security.
    Dependent PopulationAbout 55% population still depends on agriculture and allied activities (Economic Survey).
    Backward LinkagesQuality of seeds, irrigation, mechanization, fertilisers, and credit availability affect agriculture.
    Forward LinkagesMarket access, storage, transport, research hubs, and extension services enhance productivity.

    Mains Key Points

    Agriculture remains the backbone of Indian economy, providing livelihood to majority population.
    Natural factors like soils, topography, and monsoon critically affect crop distribution.
    Socio-economic factors like land size, tenancy reforms, and rural labour shape productivity.
    Forward and backward linkages highlight agriculture’s interconnection with industry and markets.
    Need for diversification and modernization to reduce monsoon dependency.

    Prelims Strategy Tips

    Net sown area: 42.4% of total geographical area (2016–17).
    Cropping intensity: 143.6%.
    Agriculture’s share in GVA (2019–20): 17.8%.
    55% of Indian population dependent on agriculture (Economic Survey).

    Types of Agriculture Practiced in India

    Key Point

    India practices diverse types of agriculture due to varied topography, climate, and socio-economic conditions. These include dry farming, wet farming, irrigated farming, subsistence farming, shifting cultivation, terrace farming, plantation agriculture, commercial farming, contract farming, organic farming, and mixed farming.

    India practices diverse types of agriculture due to varied topography, climate, and socio-economic conditions. These include dry farming, wet farming, irrigated farming, subsistence farming, shifting cultivation, terrace farming, plantation agriculture, commercial farming, contract farming, organic farming, and mixed farming.

    Types of Agriculture in India

    TypeDescriptionRegions
    Dry FarmingPractised in <80 cm rainfall areas; only one crop per year; millets & pulses grown.Rajasthan (dry areas), Vidarbha (Maharashtra), MP, Haryana (south), Gujarat, Karnataka
    Wet FarmingPractised in >200 cm rainfall areas; multiple crops grown; rice & jute are main.West Bengal, NE states, Malabar coast
    Irrigated FarmingPractised in 80–200 cm rainfall zones with irrigation support; wheat, rice, sugarcane.Punjab, Haryana, UP, NW Tamil Nadu, river deltas, Deccan Plateau
    Subsistence FarmingFarming for self-consumption; small holdings, manual labour, low productivity.Chhattisgarh, Uttarakhand, Jharkhand, hill areas
    Shifting CultivationForest land cleared by cutting & burning; crops grown for 2–3 years; then shifted.NE India (Jhuming), Orissa, Chhattisgarh, Andhra Pradesh (tribal belts)
    Terrace CultivationTerraces carved on hills to conserve soil & water; used for crops.Himalayas, NE states, Nilgiris, peninsular hills
    Plantation AgricultureOrganised, large-scale cultivation of single crop; needs high investment.Tea (Assam, WB, Nilgiris), Coffee (Karnataka, Kerala, TN), Rubber (Kerala)
    Commercial FarmingCrops grown mainly for market & industries.Sugarcane (UP, Maharashtra), Cotton (Gujarat, Maharashtra, Punjab), Jute (WB)
    Contract FarmingCompanies contract farmers, provide inputs & buy produce at pre-fixed price.Emerging trend in many states; vegetables, dairy, poultry, food processing hubs
    Organic FarmingAvoids chemicals; relies on manure, compost, crop rotation & bio-control.Sikkim, Uttarakhand, MP, Maharashtra, Rajasthan, Kerala, NE states
    Mixed FarmingCombination of crop cultivation & livestock rearing.Practiced in many states across India

    Mains Key Points

    India’s agricultural diversity reflects its varied climate and soils.
    Traditional farming methods (subsistence, shifting, terrace) coexist with modern farming (commercial, contract, organic).
    Dryland agriculture remains vulnerable to monsoon failures.
    Plantation and commercial farming show integration with global markets.
    Organic and contract farming are emerging trends in sustainable agriculture.

    Prelims Strategy Tips

    Shifting cultivation in NE India is called Jhuming.
    Sikkim is India’s first fully organic state.
    Dry farming: practiced in <80 cm rainfall; Wet farming: >200 cm rainfall.
    Plantation agriculture: Tea (Assam, WB), Coffee (Karnataka, Kerala, TN), Rubber (Kerala).

    Cropping Seasons and Patterns in India

    Key Point

    India has three major cropping seasons – Kharif (June–Sept), Rabi (Oct–Mar), and Zaid (Apr–Jun). Cropping patterns vary across regions due to climate, soil, irrigation, farm size, input costs, and government policies. Cropping intensity in India is around 136%.

    India has three major cropping seasons – Kharif (June–Sept), Rabi (Oct–Mar), and Zaid (Apr–Jun). Cropping patterns vary across regions due to climate, soil, irrigation, farm size, input costs, and government policies. Cropping intensity in India is around 136%.

    Cropping Seasons in India

    SeasonMajor CropsNorthern StatesSouthern States
    Kharif (June–Sept)Rice, Cotton, Bajra, Maize, Jowar, TurRice, Cotton, Bajra, Maize, Jowar, TurRice, Maize, Ragi, Jowar, Groundnut
    Rabi (Oct–Mar)Wheat, Gram, Rapeseeds, Mustard, BarleyWheat, Gram, Rapeseeds, Mustard, BarleyRice, Maize, Ragi, Jowar, Groundnut
    Zaid (Apr–Jun)Vegetables, Fruits, FodderVegetables, Fruits, FodderRice, Vegetables, Fodder

    Factors Influencing Cropping Pattern

    FactorImpact
    ClimateDetermines crop suitability; Punjab (rice, wheat) vs Tamil Nadu (groundnut, sunflower).
    SoilBlack soil → Cotton; Sandy soil → Bajra, Jowar; Alluvial → Rice, Wheat.
    IrrigationEnables crop diversification, e.g., canal & drip irrigation for vegetables, orchards.
    Farm SizeLarge holdings allow diversification; small → focus on sustenance crops.
    Input Prices & MSPHigh MSP for rice & wheat distorts cropping pattern, neglecting pulses & oilseeds.
    Government PoliciesPolicies influence farmer choice – subsidies, procurement, export-import rules.

    Cropping Intensity and Practices

    ConceptDetails
    Cropping IntensityGross Cropped Area / Net Sown Area × 100; India ~136%.
    Crop RotationSequential cropping (e.g., wheat → maize → pulses) improves soil fertility.
    Mixed CroppingTwo or more crops grown simultaneously (e.g., wheat + gram). Reduces risk.
    Relay CroppingSowing next crop before harvesting standing crop. Efficient resource use.

    Mains Key Points

    Cropping patterns vary regionally due to climate, soil, and irrigation availability.
    Government policies (MSP, subsidies) significantly influence farmer choices.
    High cropping intensity (136%) reflects labour-abundant but land-scarce India.
    Sustainable practices like crop rotation, mixed cropping, and relay cropping enhance soil fertility and reduce risks.

    Prelims Strategy Tips

    India has three cropping seasons – Kharif, Rabi, Zaid.
    Cropping Intensity of India ~136%.
    MSP focus on wheat, rice & sugarcane has distorted cropping patterns.
    Shifting cultivation in NE called Jhuming.

    Major Crops in India

    Key Point

    Indian agriculture is divided into two broad categories – Food Crops (for consumption) and Cash Crops (for commercial purposes). Food crops occupy about 72% of gross cropped area, while cash crops cover around 27.8%. Rice is the most important cereal crop, making India the 2nd largest producer globally and the largest exporter.

    Indian agriculture is divided into two broad categories – Food Crops (for consumption) and Cash Crops (for commercial purposes). Food crops occupy about 72% of gross cropped area, while cash crops cover around 27.8%. Rice is the most important cereal crop, making India the 2nd largest producer globally and the largest exporter.

    Types of Crops – Food vs Cash

    TypeDescriptionShare in Gross Cropped AreaExamples
    Food CropsGrown mainly for consumption to feed population and livestock72%Rice, Wheat, Maize, Pulses, Millets
    Cash CropsGrown mainly for commercial purposes to earn profit27.8%Sugarcane, Oilseeds, Spices, Cotton, Tobacco, Tea, Coffee

    Rice – Growth Conditions, Areas and Facts

    ParameterDetails
    Rainfall100–200 cm, well-distributed; grown with irrigation even in <100 cm rainfall areas
    Temperature23–30°C (Sowing: 20–22°C; Growing: 23–25°C; Harvesting: 25–30°C)
    SoilFertile loamy/clayey soil; lower & middle Ganga plains, coastal plains, Brahmaputra valley, Deccan plateau
    Major StatesWest Bengal, Uttar Pradesh, Andhra Pradesh, Odisha, Punjab
    Production FactsIndia – 2nd largest producer after China; largest exporter of rice globally
    Area & YieldUP has largest area under cultivation; Punjab has highest yield (4035 kg/ha)
    Leading ProducerWest Bengal – contributes 13.15% of national production
    Special NoteIn states like West Bengal, 3 crops of rice grown annually – Aman, Boro, Aos

    Mains Key Points

    Food crops dominate Indian agriculture due to population pressure (72% area).
    Rice is the staple crop with highest area coverage and multiple cropping in eastern states.
    Cash crops like sugarcane, cotton, tea, and coffee drive exports and agro-based industries.
    Regional variations in cropping depend on rainfall, soil type, irrigation, and government policies.

    Prelims Strategy Tips

    Food crops occupy ~72% gross cropped area; cash crops ~28%.
    India is 2nd largest rice producer after China; largest exporter globally.
    Punjab has highest rice yield; West Bengal is largest producer.
    Rice requires 100–200 cm rainfall and 23–30°C temperature.

    Major Cereal Crops in India – Rice, Wheat and Maize

    Key Point

    Rice, wheat, and maize are the three most important cereal crops in India. India is the 2nd largest producer of both rice and wheat globally, and maize is the third most important cereal crop after these two. India is also the largest exporter of rice worldwide.

    Rice, wheat, and maize are the three most important cereal crops in India. India is the 2nd largest producer of both rice and wheat globally, and maize is the third most important cereal crop after these two. India is also the largest exporter of rice worldwide.

    Detailed Notes (17 points)
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    Perennial Rice Varieties
    Farmers in China developed the first perennial rice variety, PR23, in 2018.
    Perennial rice does not need replanting every year; one planting yields up to 8 harvests in 4 years.
    India’s IARI developed first-ever non-GM herbicide-tolerant rice varieties – ‘Pusa Basmati 1979’ and ‘Pusa Basmati 1985’.
    Developed by crossing Pusa 1121 and Pusa 1509 with drought-tolerant ‘Robin’ (derived from Nagina 22).
    Nagina 22 is drought and heat-tolerant, with deep root systems.
    Wheat
    India is the 2nd largest wheat producer globally after China.
    Wheat is a Rabi crop, sown in October–November and harvested in March–April.
    Uttar Pradesh is the largest wheat producer; Punjab has the highest yield (~5008 kg/ha).
    Wheat requires cool winters (10–15°C) and moderate summers (21–26°C) with ~75 cm rainfall.
    Cultivation is concentrated in north-western states due to alluvial soil, irrigation, and Green Revolution impact.
    Maize
    Maize is the 3rd most important cereal after rice and wheat, called the 'Queen of Cereals' for its high yield potential.
    Andhra Pradesh is the leading maize producer (20.9% of India’s output).
    Maize is grown as a Kharif crop, sown in June–July and harvested in September–October.
    Requires 50–100 cm rainfall, 21–27°C temperature, and old alluvial (Bangar) soils.

    Perennial Rice and New Varieties

    VarietyDetails
    PR23 (China)First commercial perennial rice (2018); 8 harvests from 1 planting (4 years)
    Pusa Basmati 1979 & 1985 (India)Non-GM, herbicide-tolerant varieties developed by IARI
    ParentagePusa 1121 + Pusa 1509 × Robin (drought-tolerant, derived from Nagina 22)

    Wheat – Growth Conditions and Distribution

    ParameterDetails
    Rainfall75 cm ideal; not feasible <50 cm or >100 cm
    TemperatureWinter: 10–15°C; Summer: 21–26°C
    SoilWell-drained loamy & clayey soils (alluvial plains of north India; black soil in Deccan)
    Major StatesUP, MP, Punjab, Haryana (75% of production)
    Production Facts2nd largest producer globally; Rabi crop (Oct–Nov sowing, Mar–Apr harvest)
    Highest AreaUttar Pradesh – largest cultivation area
    Highest YieldPunjab – 5008 kg/ha due to irrigation, Green Revolution, Western Disturbance

    Maize – Growth Conditions and Distribution

    ParameterDetails
    Rainfall50–100 cm
    Temperature21–27°C
    SoilOld alluvial (Bangar) soil
    Major StatesAndhra Pradesh (20.9%), Karnataka, Rajasthan
    Production Facts3rd most important cereal; grown mainly in semi-arid regions
    SeasonKharif crop – Sown: June–July, Harvested: Sep–Oct
    Special NoteCalled 'Queen of Cereals' for high yield potential

    Mains Key Points

    Perennial rice reduces cost and improves sustainability as it avoids annual replanting.
    Wheat is critical for India’s food security, concentrated in north-western plains with irrigation support.
    Maize, though coarse, has high yield potential and is vital for fodder, food, and industry.
    New crop varieties (e.g., Pusa Basmati, Robin-derived strains) show India’s focus on resilience and innovation in agriculture.

    Prelims Strategy Tips

    PR23 (China, 2018) is first perennial rice; India’s IARI released Pusa Basmati 1979 & 1985 (non-GM).
    India – 2nd largest wheat producer; Punjab highest yield, UP largest area.
    Maize is called 'Queen of Cereals'; AP is top producer (20.9%).
    Wheat – Rabi crop; Rice – Kharif; Maize – mainly Kharif crop.

    Food Crops – Millets in India

    Key Point

    Millets, often called 'food for the poor', are actually nutrient-rich crops full of proteins, fibers, vitamins, and minerals. They grow well in poor soils, require little irrigation, and are climate-resilient, making them critical for dryland farming in India.

    Millets, often called 'food for the poor', are actually nutrient-rich crops full of proteins, fibers, vitamins, and minerals. They grow well in poor soils, require little irrigation, and are climate-resilient, making them critical for dryland farming in India.

    Detailed Notes (9 points)
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    Overview of Millets
    Millets are short-duration crops, requiring low inputs and minimal irrigation.
    They can grow in poor-quality soils and withstand arid, semi-arid, and harsh climatic conditions.
    Major types: Jowar, Bajra, Ragi, and minor millets (Kodon, Kutki, Sanwa, Varagu, Rajgira).
    Used for both human consumption and cattle fodder.
    Importance
    High nutritional value: rich in proteins, calcium, iron, and fiber.
    Climate-resilient and suitable for dryland farming.
    Contribute to food and nutritional security, especially in rural and tribal areas.

    Jowar – Conditions and Distribution

    ParameterDetails
    RainfallMore than 30 cm (not suitable for heavy rainfall areas)
    Temperature26°C – 33°C
    SoilLoamy, sandy, and varied soils
    Major StatesMaharashtra (38.23%), Karnataka, Tamil Nadu
    Crop TypeBoth Kharif and Rabi
    UsesFood grain, fodder, industrial raw material, dryland farming

    Bajra (Pearl Millet) – Conditions and Distribution

    ParameterDetails
    Rainfall40–50 cm (requires little irrigation)
    Temperature25°C – 30°C (hot and dry climate)
    SoilLight sandy, black, red soils
    Major StatesRajasthan (40%), Uttar Pradesh, Gujarat, Haryana
    Crop TypeKharif crop
    UsesStaple food in arid regions, major cattle fodder, hardy crop for drylands

    Ragi (Finger Millet) – Conditions and Distribution

    ParameterDetails
    Rainfall50–100 cm
    Temperature20°C – 30°C
    SoilRed, light black, sandy loams
    Major StatesKarnataka (70%), Uttarakhand, Tamil Nadu, Andhra Pradesh, Odisha, Maharashtra
    Crop TypeRabi in South India, Kharif in North India
    UsesStaple food in South India, highly nutritious (rich in calcium and iron)

    Mains Key Points

    Millets are vital for food security in arid and semi-arid regions.
    They are climate-resilient crops suitable for dryland farming.
    Nutritionally rich, millets help fight malnutrition in rural areas.
    Millets diversify India’s cropping pattern, reducing over-dependence on rice and wheat.

    Prelims Strategy Tips

    Karnataka produces >70% of India’s Ragi.
    Maharashtra leads in Jowar (38.23%).
    Rajasthan leads in Bajra (40%).
    Millets are climate-resilient and used in dryland farming.

    International Year of Millets (IYM) 2023

    Key Point

    The UN General Assembly, on India’s proposal, declared 2023 as the International Year of Millets to promote their production, consumption, and global acceptance. Millets are climate-resilient, nutrition-rich crops crucial for food security.

    The UN General Assembly, on India’s proposal, declared 2023 as the International Year of Millets to promote their production, consumption, and global acceptance. Millets are climate-resilient, nutrition-rich crops crucial for food security.

    Detailed Notes (28 points)
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    Context
    UN Food and Agriculture Organization (FAO) organized the opening ceremony for IYM 2023 in Rome, Italy.
    UNGA declared 2023 as International Year of Millets on 5th March 2021 based on India’s proposal.
    Opportunities of IYM 2023
    Create awareness and increase millet production & consumption.
    Promote Indian millets, recipes, and value-added products globally.
    Increase contribution of millets to food security and nutrition.
    Ensure efficient processing, storage, transport, and consumption systems.
    Encourage sustainable production involving all stakeholders.
    About Millets
    Millets are small-seeded grasses, often called Nutri-cereals.
    Grown in 131 countries, especially on marginal lands of dry regions (temperate, subtropical, tropical).
    Known for resilience in low rainfall and poor soils.
    India’s Millet Production
    India is the largest producer of millets globally (41% share in 2020).
    Major millet-producing states: Rajasthan, Uttar Pradesh, Haryana, Gujarat, Madhya Pradesh, Maharashtra, Karnataka, Tamil Nadu, Andhra Pradesh, Telangana.
    Rajasthan: Contributes 50% of India’s millet production; largest pearl millet (bajra) producer.
    Karnataka: Leading producer of finger millet (ragi).
    Maharashtra: Top producer of jowar (sorghum).
    Government Steps
    National Year of Millets – 2018.
    Sub-Mission on Millets under National Food Security Mission since 2018.
    Inclusion of millets under POSHAN Abhiyaan by Ministry of Women & Child Development.
    State-Level Initiatives
    Odisha: Odisha Millet Mission (2018), tagline ‘Farm to Plate’, ragi included in PDS (7 districts).
    Karnataka: Incentives to millet farmers (₹10,000/ha), organic promotion under ‘Savayava Bhagya Yojana’, national/international trade fairs.
    Maharashtra: Millets promoted under Project on Climate Resilient Agriculture.
    Telangana: Raithu Bandhu Samithi, exclusive FPOs for millet promotion.

    India’s Major Millets and Leading States

    Millet TypeLeading State
    Pearl Millet (Bajra)Rajasthan
    Finger Millet (Ragi)Karnataka
    Sorghum (Jowar)Maharashtra

    Mains Key Points

    IYM 2023 provides global platform to highlight millets’ role in food security and climate resilience.
    Helps diversify agriculture away from rice-wheat dominance towards nutrition-rich crops.
    State-led missions (Odisha, Karnataka, Maharashtra, Telangana) provide models for millet promotion.
    Millets align with SDGs: zero hunger, climate action, and good health.
    Promotes India’s soft power by branding traditional crops globally.

    Prelims Strategy Tips

    UNGA declared 2023 as IYM on India’s proposal (March 2021).
    India contributes ~41% of global millet production.
    Rajasthan – Bajra, Karnataka – Ragi, Maharashtra – Jowar.
    Millets included under POSHAN Abhiyaan and NFSM (2018).

    Pulses in India

    Key Point

    India is the largest producer, consumer, and importer of pulses globally. Pulses are grown both as Kharif and Rabi crops, with Rabi pulses contributing more than 60% of the total production.

    India is the largest producer, consumer, and importer of pulses globally. Pulses are grown both as Kharif and Rabi crops, with Rabi pulses contributing more than 60% of the total production.

    Detailed Notes (7 points)
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    Overview
    Pulses are rich in protein and are crucial supplements to cereal-based diets.
    Grown across diverse climatic conditions in India.
    Major Rabi pulses: Bengal Gram (Chana), Lentils, Peas.
    Major Kharif pulses: Arhar (Pigeon Pea), Moong (Green Gram), Urad (Black Gram).
    Pulses improve soil fertility by fixing atmospheric nitrogen.
    India accounts for nearly 25% of global pulse production but also imports to meet domestic demand.

    Major Pulses in India – Conditions and Distribution

    PulseCharacteristicsConditions for GrowthMajor States
    Bengal Gram (Chana)Accounts for ~40% of pulse production; protein-rich supplement.Cold climate; ideal temperature 24–30°C; sandy loam to clay loam soils; Rabi crop sown in Sep–Nov.Madhya Pradesh, Uttar Pradesh, Rajasthan, Andhra Pradesh
    Pigeon Pea (Arhar/Tur)Consumed as dal; rich in iron & iodine; grown as Kharif & Rabi crop.Tropical crop; 24–30°C; requires sunny weather during flowering; black cotton soils.Maharashtra, Karnataka, Madhya Pradesh, Uttar Pradesh, Gujarat, Jharkhand
    CowpeaDrought hardy; maintains soil moisture; protein content 22–24%.Sensitive to cold; best at 27°C (day), 22°C (night); grown in sandy/semi-arid soils rich in organic matter.Punjab, Haryana, Western Uttar Pradesh
    Red Kidney Bean (Rajma)Popular in North Indian cuisine; rich in protein & molybdenum.Ideal temp 15–25°C; loose, well-drained, organic-rich soil; sensitive to salinity.Maharashtra, Jammu & Kashmir, Himachal Pradesh, Uttarakhand
    Green Gram (Moong)Highly digestible protein; also used as green manure; contributes ~10% of total pulses.15–27°C; slightly acidic to neutral soils; grown in Kharif & Rabi in North, Rabi in South.Odisha, Maharashtra, Andhra Pradesh, Madhya Pradesh

    Mains Key Points

    Pulses are vital for nutritional security in India’s cereal-based diet.
    They contribute to soil fertility via nitrogen fixation.
    Despite being the largest producer, India imports pulses to meet demand.
    Regional specialization: MP dominates Chana; Maharashtra dominates Arhar; Karnataka leads in Urad & Moong.
    Need for improved storage, MSP coverage, and research for higher productivity.

    Prelims Strategy Tips

    India is the largest producer, consumer, and importer of pulses.
    Bengal Gram (Chana) – largest share (~40% of pulse production).
    Arhar/Tur is mainly produced in Maharashtra, Karnataka, MP, UP, Gujarat, Jharkhand.
    Moong contributes ~10% of India’s pulse output.

    Oilseeds in India

    Key Point

    India is one of the largest growers of oilseeds and a major importer of edible oils. Seven edible oilseeds and two non-edible oilseeds are grown, mostly in rainfed regions. Rajasthan, Gujarat, Maharashtra, and Madhya Pradesh together account for 70% of production.

    India is one of the largest growers of oilseeds and a major importer of edible oils. Seven edible oilseeds and two non-edible oilseeds are grown, mostly in rainfed regions. Rajasthan, Gujarat, Maharashtra, and Madhya Pradesh together account for 70% of production.

    Detailed Notes (5 points)
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    Overview
    India grows 9 annual oilseed crops – 7 edible (groundnut, sesame, rapeseed-mustard, sunflower, safflower, soybean, niger seed) and 2 non-edible (castor, linseed).
    Oilseed farming is primarily confined to rainfed areas.
    Rajasthan is the top producer, while Madhya Pradesh has the largest area under oilseed cultivation.
    Uses: Cooking oils, animal feed, biofuels, industrial products like varnishes, inks, soaps, and cosmetics.

    Major Oilseeds – Growth Conditions and Distribution

    OilseedConditions of GrowthMajor StatesFeatures
    GroundnutTropical; 20–30°C; 50–75 cm rainfall; sandy loam soils; grown as Rabi & Kharif.Gujarat, Rajasthan, Tamil NaduHalf of India’s oilseed output; rich in vitamins & proteins; edible oil, soaps, medicines, cattle feed; improves crop rotation.
    Sesamum21–23°C; 45–50 cm rainfall; loamy soils; Kharif in north, Rabi in south.Gujarat, West Bengal, Tamil Nadu, Madhya Pradesh45–50% oil; used in cooking, perfumery, medicines; also for cattle feed.
    Rapeseed & MustardCool NW climate; mainly Rabi crop; similar to wheat conditions.Rajasthan, Haryana, Madhya Pradesh25–45% oil; cooking, preservatives, lubricants, toiletries, cattle feed.
    Linseed20°C; 75 cm rainfall; clay loam & alluvial soils; Rabi crop.Madhya Pradesh, Uttar Pradesh, Chhattisgarh35–47% oil; used in paints, varnishes, inks, waterproof fabrics.
    CastorDry warm areas; 20–25°C; 50–75 cm rainfall; red sandy loam & light alluvial soils; Kharif in north, Rabi in south.Gujarat, Rajasthan, Telangana, Karnataka35–58% oil; lubricants, soaps, inks, varnishes, medicines.
    Sunflower20–26°C; 50–75 cm rainfall; deep loamy soils; grown in Kharif, Rabi & spring.Karnataka, Maharashtra, Andhra PradeshCooking oil, margarine, butter, snacks; also cosmetics, paints, lubricants, biodiesel.
    Safflower22–35°C; 60–90 cm rainfall; wide soils; Rabi crop in dry areas.Maharashtra, Karnataka, Andhra PradeshCooking oil, cattle fodder; India is the largest producer of safflower seeds.
    Soybean15–32°C; 60–65 cm rainfall; sandy loam soils; Kharif crop harvested Sep–Oct.Madhya Pradesh, Maharashtra, RajasthanSecond most important oilseed after groundnut; cooking oil, biofuel, animal feed.

    Mains Key Points

    India is both a major producer and importer of oilseeds due to rising edible oil demand.
    Groundnut, soybean, and rapeseed-mustard are dominant in production.
    Oilseeds are vital for edible oils, fodder, biofuels, and industrial uses.
    Rainfed dependence makes oilseeds vulnerable to climate variability.
    Need for research, irrigation expansion, and MSP coverage to reduce import dependence.

    Prelims Strategy Tips

    India grows 9 annual oilseeds – 7 edible & 2 non-edible.
    Rajasthan, Gujarat, Maharashtra & MP produce 70% of total oilseeds.
    Groundnut – largest share; Gujarat top producer.
    Soybean – MP is the leading state.
    Safflower – India is world’s largest producer.

    Plantation Crops in India

    Key Point

    India is a major producer of plantation crops such as tea and coffee. India is the second-largest tea producer after China and contributes around 3.5% of world coffee production. These crops are export-oriented, labour-intensive, and thrive in specific climatic and soil conditions.

    India is a major producer of plantation crops such as tea and coffee. India is the second-largest tea producer after China and contributes around 3.5% of world coffee production. These crops are export-oriented, labour-intensive, and thrive in specific climatic and soil conditions.

    Detailed Notes (11 points)
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    Tea
    India produced 13.4 lakh tonnes of tea in 2018, second only to China.
    Requires heavy rainfall (150–300 cm), 20–30°C temperature, and well-drained, humus-rich soils.
    Sensitive to extreme cold (below 10°C) and heat (above 35°C).
    Soil needs high potash and iron; hill slopes are preferred.
    Concentrated in North East (Assam, West Bengal), South India (Nilgiri, Cardamom, Palni, Anaimalai hills in TN, Kerala, Karnataka), and North West India (HP, Uttarakhand).
    Coffee
    India produces 3.5% of world coffee. Brazil is the global leader (25%).
    Requires 150–250 cm rainfall, 15–28°C temperature, and loamy soil rich in iron & calcium.
    Cannot tolerate stagnant water, snow, or very high temperatures (>30°C).
    3 southern states dominate: Karnataka (71%), Kerala, and Tamil Nadu.

    Plantation Crops – Tea and Coffee

    CropConditions for GrowthMajor AreasKey Facts
    TeaRainfall 150–300 cm; Temp. 20–30°C; well-drained humus & iron-rich soil; hill slopes.Assam, West Bengal (NE India – 75% production); Nilgiri, Cardamom, Palni, Anaimalai hills (TN, Kerala, Karnataka); Himachal Pradesh, Uttarakhand.India: 13.4 lakh tonnes in 2018, 2nd largest producer after China.
    CoffeeRainfall 150–250 cm; Temp. 15–28°C; loamy, iron-rich soil; sensitive to stagnant water.Karnataka (71%), Kerala, Tamil Nadu.India: 3.5% of world coffee production; Brazil is global leader (25%).

    Mains Key Points

    Tea and coffee are plantation crops contributing significantly to India’s export earnings.
    Labour-intensive crops providing large-scale rural employment.
    Tea dominates in North East; Coffee is confined to southern hill slopes.
    Both require specific climate-soil combinations; vulnerable to climate change.
    Need for modernization, branding, and global market expansion.

    Prelims Strategy Tips

    Tea: India 2nd largest producer; Assam & West Bengal = 75% of output.
    Coffee: Karnataka contributes ~71%.
    Tea requires 150–300 cm rainfall; Coffee 150–250 cm.
    Coffee cannot tolerate stagnant water; Tea sensitive to prolonged dry spells.

    Cash Crops in India

    Key Point

    Cash crops like cotton and sugarcane are vital for India’s agro-economy. Cotton supports the textile and oil industries, while sugarcane is a tropical crop that provides raw material for sugar, jaggery, and ethanol industries, also generating large-scale rural employment.

    Cash crops like cotton and sugarcane are vital for India’s agro-economy. Cotton supports the textile and oil industries, while sugarcane is a tropical crop that provides raw material for sugar, jaggery, and ethanol industries, also generating large-scale rural employment.

    Detailed Notes (13 points)
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    Cotton
    India produces ~8% of world cotton; 4th largest producer after USA, China, Russia.
    Fibre used in textile industries; oil from seeds used in vanaspati industry; seeds also serve as cattle feed.
    Quality is poor, hence long staple cotton is imported.
    Requires ~75 cm rainfall and 150 days of clear weather at flowering and boll opening.
    Grows best on black cotton soil of Deccan Plateau and alluvial soil of northern plains.
    Leading producers: Maharashtra, Gujarat, Andhra Pradesh, Haryana, Rajasthan, Punjab, Karnataka, Madhya Pradesh.
    High-quality cotton: Punjab & Haryana.
    Sugarcane
    Indigenous to India, belongs to the bamboo family.
    Provides livelihood to over a million people, important for sugar, jaggery, ethanol.
    Temperature: 21–27°C; Rainfall: 75–150 cm; requires soils with good water retention.
    Major producing states: Uttar Pradesh (50% share, largest area), Maharashtra, Karnataka.

    Cash Crops – Cotton and Sugarcane

    CropConditions for GrowthMajor AreasKey Facts
    CottonRainfall ~75 cm; 150 days cloud-free weather; black cotton soil (Deccan) and alluvial soil (north).Maharashtra, Gujarat, Andhra Pradesh, Punjab, Haryana, Rajasthan, Karnataka, Madhya Pradesh.India: 8% of world cotton; 4th largest producer; high-quality cotton in Punjab & Haryana.
    SugarcaneTemp. 21–27°C; Rainfall 75–150 cm; soils with high water retention.Uttar Pradesh (50% share, largest area), Maharashtra, Karnataka.Indigenous crop; raw material for sugar, jaggery, ethanol; employs >1 million people.

    Mains Key Points

    Cotton is crucial for India’s textile industry, employing millions in ginning, spinning, and weaving.
    Sugarcane supports sugar, jaggery, and ethanol industries, making it a vital multipurpose crop.
    Both are labour-intensive and linked with rural employment and livelihoods.
    Cotton quality issues force India to import long-staple varieties despite being a large producer.
    Sugarcane is criticized for its high water requirement, straining water resources in UP and Maharashtra.

    Prelims Strategy Tips

    India: 4th largest cotton producer (~8% of world).
    UP: ~50% of India’s sugarcane output; largest area under cultivation.
    Cotton best in black cotton soils; Sugarcane requires water-retentive soils.
    Sugarcane – tropical & subtropical crop between 35°N–35°S latitudes.

    Jute and Horticulture Crops in India

    Key Point

    After cotton, jute is the second most important natural fibre crop in India, mainly concentrated in West Bengal. Horticulture has also become a significant sector, making India a world leader in the production of mango, banana, cashew nuts, spices, and coconuts.

    After cotton, jute is the second most important natural fibre crop in India, mainly concentrated in West Bengal. Horticulture has also become a significant sector, making India a world leader in the production of mango, banana, cashew nuts, spices, and coconuts.

    Detailed Notes (30 points)
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    Jute
    India is the largest producer of jute globally.
    Provides raw material not only for packaging but also for textiles, paper, building materials, automotive use, and decorative purposes.
    Requires temperature of 24–35°C, rainfall 120–150 cm, and flood-replenished soils.
    Major areas: West Bengal (80%), Bihar, Assam.
    Horticulture
    Produces ~320.48 million tonnes annually; productivity higher than food grains.
    India is 2nd largest producer of fruits and vegetables globally.
    Largest producer of spices, coconut, and cashew nuts.
    Fruits such as mango, banana, apple, pomegranate, and guava dominate production.
    # Cashew
    Requires temperature 16–25°C, rainfall 50–350 cm, rocky/laterite/sandy soils.
    Major producers: Maharashtra, Andhra Pradesh, Odisha, Karnataka.
    India is the largest producer and exporter of cashew in the world.
    # Mango
    Temperature 20–30°C, rainfall 75–250 cm, adaptable to most soils.
    India produces >50% of world’s mangoes; largest exporter.
    Major states: Uttar Pradesh, Bihar, Andhra Pradesh, West Bengal, Odisha.
    # Apple
    Temperate crop; requires 21–24°C, rainfall 100–125 cm.
    Prefers loamy, well-drained soils; grown in orchards on hill slopes.
    Major states: Himachal Pradesh (Kullu, Shimla), Jammu & Kashmir, Uttarakhand.
    # Banana
    Tropical/sub-tropical crop; requires 20–30°C, rainfall ~150 cm.
    Needs moisture-rich, well-drained soils with organic matter.
    Major states: Tamil Nadu, Maharashtra, Gujarat, Karnataka, Kerala.
    India is the largest producer globally.
    # Orange
    Requires sandy loam soils, grown mainly in hilly regions.
    Major states: Uttarakhand, Himachal Pradesh (Kangra), West Bengal (Darjeeling), Meghalaya (Khasi & Jaintia hills).

    Jute and Horticulture Crops – Key Aspects

    CropConditionsMajor AreasKey Facts
    JuteTemp 24–35°C; Rainfall 120–150 cm; flood-replenished soilsWest Bengal (80%), Bihar, AssamIndia largest producer globally
    CashewTemp 16–25°C; Rainfall 50–350 cm; rocky/laterite/sandy soilsMaharashtra, Andhra Pradesh, Odisha, KarnatakaIndia largest producer & exporter
    MangoTemp 20–30°C; Rainfall 75–250 cm; adaptable soilsUP, Bihar, Andhra Pradesh, West Bengal, OdishaIndia >50% of world production
    AppleTemp 21–24°C; Rainfall 100–125 cm; loamy soilsHimachal Pradesh, J&K, UttarakhandConfined to temperate hilly regions
    BananaTemp 20–30°C; Rainfall ~150 cm; moist soilsTamil Nadu, Maharashtra, Gujarat, Karnataka, KeralaIndia largest producer globally
    OrangeWell-drained sandy loam soils; hilly areasUttarakhand, Himachal (Kangra), Darjeeling, MeghalayaClimate less important than soil

    Mains Key Points

    Jute remains crucial for rural employment in eastern India and export revenue.
    Horticulture diversifies agriculture beyond cereals, increasing farmers’ incomes.
    India’s dominance in mango and banana production provides export potential.
    Cashew and spices are globally competitive, linking India to international markets.
    Challenges: post-harvest losses, inadequate cold storage, and fragmented supply chains.

    Prelims Strategy Tips

    India largest producer of jute, cashew, mango, banana, spices.
    West Bengal: ~80% of India’s jute.
    UP: top state in mango production.
    Karnataka: leading producer of coffee and also banana-rich.
    Horticulture productivity higher than cereals.

    Irrigation in India

    Key Point

    Irrigation in India is classified into Major, Medium, and Minor projects based on Cultivable Command Area (CCA). Different irrigation systems like tanks, wells, tubewells, and canals dominate in different regions due to geology, soil, and water availability.

    Irrigation in India is classified into Major, Medium, and Minor projects based on Cultivable Command Area (CCA). Different irrigation systems like tanks, wells, tubewells, and canals dominate in different regions due to geology, soil, and water availability.

    Detailed Notes (29 points)
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    Classification of Irrigation Projects
    Major Projects: CCA > 10,000 hectares.
    Medium Projects: CCA between 2,000–10,000 hectares.
    Minor Projects: CCA < 2,000 hectares.
    Factors Influencing Irrigation
    Northern India: Soft rocks, fertile plains, perennial rivers → canals & wells feasible.
    Southern India: Hard rocks, uneven relief → tanks more prevalent.
    Sources of Irrigation
    # 1. Tank Irrigation (South India)
    Constructed reservoirs of mud/stone across streams.
    States: Andhra Pradesh, Telangana, Tamil Nadu, Karnataka, Maharashtra.
    Merits: Low cost, farmer-owned, supports fishing.
    Demerits: Dry in summers, lifting water is hard, silting issues.
    # 2. Well & Tube Well Irrigation (North India)
    Wells dug for groundwater; Persian wheel/mot used.
    Tube wells (deep >15m) use electric/diesel pumps.
    Areas: North India plains, Tapi & Narmada valley, deltas of Mahanadi, Godavari, Krishna, Cauvery.
    Absent: Rocky peninsular region, dry tracts of Rajasthan, Gujarat (brackish water).
    Merits: Cheap, independent source, no ‘Reh’ problem.
    Demerits: Small area (1–8 ha), brackish water problem, lowers groundwater table.
    # 3. Canal Irrigation
    Artificial channels constructed with brick/stone/concrete.
    Types:
    - Inundation Canals: Only during floods/rainy season, no dams.
    - Perennial Canals: Year-round, constructed with barrages.
    Distribution: Uttar Pradesh, Punjab, Haryana; also coastal deltas of South India.
    Absent in peninsular rocky terrain.
    Merits: Perennial water, fertile silt deposition, cheap long-term.
    Demerits: Limited to plains, waterlogging, mosquito breeding, malaria risk.

    Classification of Irrigation Projects

    TypeCCA Range
    Major>10,000 hectares
    Medium2,000–10,000 hectares
    Minor<2,000 hectares

    Factors Influencing Irrigation

    ParameterNorthern IndiaSouthern India
    Rock & SoilSoft rocks & fertile plainsHard rocks & uneven relief
    Irrigation MethodCanals, wells, tanks (perennial rivers)Tank system (dependence on rainfall)

    Mains Key Points

    Irrigation in India depends on regional geology, climate, and water availability.
    Tank irrigation sustainable but prone to siltation and seasonal drying.
    Well and tube well irrigation is farmer-driven but causes groundwater depletion.
    Canal irrigation enhances fertility but causes waterlogging and health hazards.
    Balanced irrigation strategy is essential for food security and sustainability.

    Prelims Strategy Tips

    Major irrigation projects: CCA > 10,000 ha.
    Tank irrigation concentrated in South India.
    Tube wells dominate in North India plains.
    Canal irrigation: best developed in UP, Punjab, Haryana.

    Other Sources of Irrigation & Multipurpose River Valley Projects

    Key Point

    Apart from tanks, wells, and canals, India also practices modern irrigation methods like surface, sprinkler, and drip irrigation. Multipurpose river valley projects (like Bhakra-Nangal, Damodar Valley, Hirakud) provide irrigation, electricity, drinking water, flood control, and navigation but also have social and environmental costs.

    Apart from tanks, wells, and canals, India also practices modern irrigation methods like surface, sprinkler, and drip irrigation. Multipurpose river valley projects (like Bhakra-Nangal, Damodar Valley, Hirakud) provide irrigation, electricity, drinking water, flood control, and navigation but also have social and environmental costs.

    Detailed Notes (20 points)
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    Other Sources of Irrigation
    # Surface Irrigation
    Oldest form; water moves by gravity (furrows, basins, terraces).
    Common in terraced rice fields.
    Merits: Low cost, no technology needed.
    Demerits: Over-watering, no drainage outlet, unsuitable for high infiltration soils.
    # Sprinkler Irrigation
    Artificial rainfall; efficient in arid/semi-arid regions.
    Merits: Works on all soils except heavy clay.
    Demerits: Poor performance in high winds/high temperatures.
    # Drip Irrigation
    Also called trickle irrigation; water delivered drop by drop to roots.
    Highly efficient, prevents soil erosion, suited to poor soils and water-scarce areas.
    Merits: Saves water, controls weeds, no erosion.
    Demerits: High initial cost, technical limitations.
    Multipurpose River Valley Projects
    Multi-objective projects (irrigation, power, drinking water, flood control, navigation).
    Different from hydropower-only projects.
    Advantages: Drought-free irrigation, flood management, inland navigation, cheap power.
    Disadvantages: Submerges farmland, displaces people, environmental issues, seismic risks.

    Types of Irrigation – Merits & Demerits

    TypeDescriptionMeritsDemerits
    SurfaceGravity flow (furrows, basins, terraces). Oldest system.No tech required, low cost.Over-watering, poor drainage, not for high infiltration soils.
    SprinklerArtificial rainfall; efficient in arid/semi-arid areas.Works on all soils except heavy clay.Poor under high wind & heat.
    DripDrop-by-drop water delivery to roots (trickle).Water saving, no erosion, weed control.High initial cost, technical issues.

    Multipurpose River Valley Projects

    AspectDetails
    AdvantagesIrrigation, flood control, navigation, cheap hydro-power, drinking water.
    DisadvantagesLand submergence, displacement, environmental degradation, seismic risk.

    Mains Key Points

    Modern irrigation methods (sprinkler, drip) improve water-use efficiency in arid regions.
    Surface irrigation is traditional but causes wastage and waterlogging.
    Multipurpose river valley projects integrate irrigation, power, transport, and flood management.
    However, they create ecological challenges and displacement issues.
    Balanced approach needed: modern irrigation + sustainable dam planning.

    Prelims Strategy Tips

    Surface irrigation oldest; seen in terraced rice fields.
    Sprinkler irrigation best in arid/semi-arid; not for heavy clay.
    Drip irrigation most efficient; promoted in water-scarce areas.
    Multipurpose projects like Bhakra-Nangal, Damodar Valley serve irrigation + power.

    Major Multipurpose River Valley Projects in India

    Key Point

    Multipurpose river valley projects in India aim at irrigation, hydroelectric power, flood control, navigation, and drinking water supply. Inspired by the Tennessee Valley Project (USA), they have been crucial for agricultural and industrial growth, though they also cause displacement and environmental challenges.

    Multipurpose river valley projects in India aim at irrigation, hydroelectric power, flood control, navigation, and drinking water supply. Inspired by the Tennessee Valley Project (USA), they have been crucial for agricultural and industrial growth, though they also cause displacement and environmental challenges.

    Detailed Notes (5 points)
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    Overview
    First major project: Damodar Valley Project (post-Independence).
    Serve multiple purposes – irrigation, power, flood management, navigation, drinking water.
    Joint ventures often between states, sometimes India-Nepal cooperation.
    Issues: displacement, submergence, ecological imbalance.

    Major Multipurpose River Valley Projects

    ProjectRiver/StateKey Features
    Damodar Valley ProjectDamodar (Jharkhand, WB)First post-independence project; 7 dams; also thermal plants; modeled on Tennessee Valley Project.
    Bhakra Nangal ProjectSutlej (Himachal, Punjab, Haryana, Rajasthan)Biggest multipurpose project; Bhakra & Nangal dams; Gobind Sagar reservoir.
    Hirakud ProjectMahanadi (Odisha)World’s longest dam; includes Tikrapara and Naraj barrages.
    Beas ProjectBeas-Sutlej (Punjab, Haryana, Rajasthan)Includes Pong Dam; Beas-Sutlej link; earthquake resistant.
    Indira Gandhi CanalNW RajasthanWorld’s largest irrigation canal; turns Thar Desert cultivable.
    Ranjit Sagar DamRavi (Punjab, J&K)Also called Thein Dam; major hydro + irrigation project.
    Ramganga ProjectRamganga (Uttarakhand)Provides irrigation, flood control, electricity.
    Chambal ProjectChambal (MP & Rajasthan)Three dams: Gandhi Sagar, Rana Pratap Sagar, Jawahar Sagar.
    Kosi ProjectKosi (Bihar & Nepal)Flood control; joint Indo-Nepal project; barrage at Hanuman Nagar.
    Farakka BarrageGanga (West Bengal)Maintains Kolkata Port; improves Hooghly navigation.
    Tungabhadra ProjectTungabhadra (Karnataka, Andhra Pradesh)Known as Pampa Sagar; irrigation + hydropower.
    Gandak ProjectGandak (Bihar, UP, Nepal)Joint Indo-Nepal venture; irrigation + power.
    Nagarjunasagar ProjectKrishna (Telangana)Largest masonry dam in India; canals named after Nehru & Shastri.
    Rihand ProjectRihand (UP)Gobind Ballabh Pant Sagar reservoir; supplies power to UP, Bihar, MP.
    Narmada Valley ProjectNarmada (MP, Gujarat)World’s largest planned river project; includes Sardar Sarovar, Narmada Sagar.
    Koyna ProjectKoyna (Maharashtra)Largest dam in Maharashtra; flood control + hydroelectricity.

    Mains Key Points

    Multipurpose river valley projects are vital for irrigation, power, flood control and navigation.
    They contributed massively to India’s Green Revolution and industrial growth.
    However, they cause displacement of people and submergence of agricultural land.
    Ecological impacts include deforestation, biodiversity loss, and seismic risk.
    Balancing development with sustainability is crucial.

    Prelims Strategy Tips

    First project post-independence: Damodar Valley Project.
    World’s longest dam: Hirakud (Mahanadi, Odisha).
    Largest masonry dam: Nagarjunasagar (Krishna, Telangana).
    Indira Gandhi Canal turned Thar Desert cultivable.
    Sardar Sarovar (Narmada) one of world’s biggest projects.

    Dam Safety Act, 2021

    Key Point

    The Dam Safety Act, 2021 aims to ensure surveillance, inspection, operation and maintenance of specified dams in India to prevent dam failure-related disasters. It also establishes national and state-level institutions for uniform dam safety policies and monitoring.

    The Dam Safety Act, 2021 aims to ensure surveillance, inspection, operation and maintenance of specified dams in India to prevent dam failure-related disasters. It also establishes national and state-level institutions for uniform dam safety policies and monitoring.

    Detailed Notes (14 points)
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    Context
    The Supreme Court in 2021 cited the Act as a solution to end the perennial dispute between Tamil Nadu and Kerala over the Mullaperiyar Dam.
    Objectives
    Ensure safety and proper functioning of dams across India.
    Prevent dam-related disasters and protect lives and property.
    Establish uniform dam safety surveillance and inspection procedures.
    Institutions under the Act
    **National Committee on Dam Safety (NCDS)**: Headed by Chairman of the Central Water Commission (CWC); formulates policies, protocols, and guidelines.
    **National Dam Safety Authority (NDSA)**: Headed by its Chairman; functions as a regulatory body for nationwide dam safety standards.
    State-level bodies are also constituted for local implementation.
    Government Initiatives Linked
    **DHARMA (Dam Health and Rehabilitation Monitoring Application):** A digital tool for dam-related data management.
    **SHAISYS (Seismic Hazard Assessment Information System):** A web-based tool to estimate seismic hazards at dam sites.
    **DRIP (Dam Rehabilitation and Improvement Project):** Launched in 2012 with World Bank support; covers 7 states (Jharkhand, Karnataka, Kerala, MP, Odisha, Tamil Nadu, Uttarakhand); aims to rehabilitate old/dilapidated dams.

    Key Institutions under Dam Safety Act 2021

    InstitutionHeadRole
    National Committee on Dam Safety (NCDS)Chairman, CWCFormulates uniform dam safety policies and procedures
    National Dam Safety Authority (NDSA)ChairmanRegulates and ensures nationwide dam safety standards
    State Dam Safety BodiesState AppointeesImplement dam safety measures at local level

    Mains Key Points

    The Act provides a legal framework for dam safety management in India.
    It centralizes policy-making while ensuring state-level implementation.
    Strengthens digital monitoring through DHARMA and SHAISYS.
    DRIP addresses old dam rehabilitation with international support.
    Important for disaster risk reduction and water resource management.

    Prelims Strategy Tips

    Dam Safety Act, 2021 establishes NCDS and NDSA.
    First pan-India law for dam safety.
    Supreme Court referenced it in Mullaperiyar case.
    DRIP is World Bank-assisted project for dam rehabilitation.

    Interlinking of Rivers in India

    Key Point

    Interlinking of rivers is a large-scale water management project aimed at transferring surplus water from flood-prone regions to drought-prone areas, ensuring water and food security. The National River Linking Project (NRLP) plans to connect 30 canals with 14 Himalayan and 16 Peninsular rivers.

    Interlinking of rivers is a large-scale water management project aimed at transferring surplus water from flood-prone regions to drought-prone areas, ensuring water and food security. The National River Linking Project (NRLP) plans to connect 30 canals with 14 Himalayan and 16 Peninsular rivers.

    Detailed Notes (20 points)
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    Background
    First suggested by Sir Arthur Cotton in 1919.
    In 1960, K.L. Rao (then Minister of State for Energy & Irrigation) proposed linking Ganga and Cauvery.
    In 1980, Ministry of Irrigation prepared the National Perspective Plan (NNP) for inter-basin water transfer.
    National River Linking Project (NRLP)
    Connects 14 Himalayan and 16 Peninsular rivers with 30 canals.
    Aim: Transfer water from surplus (Himalayan) to deficit (Peninsular) basins.
    # Himalayan Component
    Storage reservoirs on Ganga & Brahmaputra rivers and their tributaries in India and Nepal.
    Link Ganga & Brahmaputra basins to Mahanadi basin.
    Link Eastern tributaries of Ganga with Sabarmati & Chambal systems.
    # Peninsular Component
    16 links connecting rivers of South India.
    Linking Mahanadi & Godavari to Krishna, Pennar, Cauvery & Vaigai.
    Linking Ken to Betwa, Parbati, Kalisindh & Chambal.
    Linking west-flowing rivers (south of Tapi) to east-flowing rivers.
    Ken-Betwa Link Project (KBLP)
    Approved by Union Cabinet.
    Involves Daudhan Dam and canal to transfer water from Ken to Betwa.
    Aim: Address water scarcity in Bundelkhand region (MP & UP).

    Advantages vs Disadvantages of River Linking

    AdvantagesDisadvantages
    Redistribution of water to drought-prone areas, boosting agriculture & water securityCan disturb natural ecology of rivers
    Energy security due to new dams & hydroelectricityDisplacement of people due to dam construction
    Formation of new waterways improving transportHigh financial burden on government
    Flood management and drought reliefInter-state disputes and international tensions (transboundary rivers like Ganga & Brahmaputra)

    Mains Key Points

    River linking ensures redistribution of water resources for balanced development.
    It supports agriculture, drinking water supply, navigation, and power generation.
    However, ecological impact, displacement issues, and fiscal burden remain concerns.
    Ken-Betwa is crucial for Bundelkhand’s water security but faces environmental challenges.
    Balancing development with ecology and inter-state cooperation is the key.

    Prelims Strategy Tips

    First suggested by Sir Arthur Cotton (1919).
    National Perspective Plan (1980) formed the base of NRLP.
    NRLP: 14 Himalayan + 16 Peninsular rivers with 30 canals.
    Ken-Betwa is the first approved link under NRLP.

    Allied Activities – Livestock Resources in India

    Key Point

    India has one of the largest livestock sectors in the world, engaging over 16.44 million workers. As per 2019 census, India has 535.78 million livestock, with cattle, buffaloes, goats, and sheep forming the bulk. The country ranks 1st globally in milk production and several other livestock parameters.

    India has one of the largest livestock sectors in the world, engaging over 16.44 million workers. As per 2019 census, India has 535.78 million livestock, with cattle, buffaloes, goats, and sheep forming the bulk. The country ranks 1st globally in milk production and several other livestock parameters.

    Detailed Notes (10 points)
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    Overview
    Livestock sector employs 16.44 million workers (farming, mixed farming, fishing & aquaculture).
    India has 43 indigenous cattle, 16 buffalo, 34 goat and 43 sheep breeds (DARE, 2020).
    Total livestock population (2019): 535.78 million (+4.6% over 2012 Census).
    Cattle: 192.49 million (+0.8% over previous Census).
    Exotic/Crossbred cattle: 50.42 million; Indigenous/Non-descript cattle: 142.11 million.
    Indigenous cattle population declined by 6%.
    Importance
    Livestock provides employment, nutrition (milk, meat, eggs), draft power, manure, and raw material.
    Key role in rural economy and food security.

    Livestock Distribution & Breeds

    CategoryNumber of Breeds
    Cattle43 breeds
    Buffalo16 breeds
    Goat34 breeds
    Sheep43 breeds

    India's Global Ranking in Livestock Sector (2020-21)

    RankParameters
    1stTotal Livestock Population, Milk Production, Cattle Population, Buffalo Population, Carabeef, Goat Milk Production, Total Bovine Population
    2ndGoat Population, Bristle Production, Fish Production
    3rdSheep Production, Egg Production
    4thChicken Production
    5thPoultry Meat, Poultry Production, Meat Production
    8thDuck Production
    9thCamel Population, Wool Production

    Mains Key Points

    Livestock sector is a critical component of Indian agriculture, providing employment and nutrition.
    India ranks globally high in milk, meat, and livestock population but faces declining indigenous breeds.
    Need for scientific breeding, veterinary infrastructure, and policy support.
    Livestock contributes significantly to food security and rural economy.
    Sustainability challenges: fodder scarcity, overgrazing, climate stress.

    Prelims Strategy Tips

    India has 535.78 million livestock (2019).
    Ranks 1st in milk production, cattle, buffalo & total livestock population.
    Indigenous cattle population declined by 6%.
    India has 43 indigenous cattle & 16 buffalo breeds.

    Poultry and Apiculture in India

    Key Point

    India is among the largest poultry producers globally, ranking 3rd in egg production and 18th in broiler production. Poultry is concentrated in southern and western India. Apiculture, the scientific practice of beekeeping, provides honey and pollination benefits, with India being a significant honey exporter.

    India is among the largest poultry producers globally, ranking 3rd in egg production and 18th in broiler production. Poultry is concentrated in southern and western India. Apiculture, the scientific practice of beekeeping, provides honey and pollination benefits, with India being a significant honey exporter.

    Detailed Notes (21 points)
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    Poultry in India
    India is the world's 3rd largest egg producer (after US and China) and 18th largest broiler producer.
    Egg and broiler production is rising at 8–10% per annum.
    Major production areas: Tamil Nadu (eggs), Andhra Pradesh (poultry & hatcheries), Visakhapatnam, Chittoor, Karnataka, Maharashtra, Gujarat, Madhya Pradesh, Orissa and North-East states.
    Important Chicken Breeds and Distribution
    Ankleshwar – Gujarat
    Aseel – Chhattisgarh, Orissa, Andhra Pradesh
    Busra – Maharashtra, Gujarat
    Danki – Andhra Pradesh
    Kadaknath – Madhya Pradesh
    Kalahasti – Andhra Pradesh
    Kashmir Favorolla – Jammu & Kashmir
    Miri – Assam
    Nicobari – Andaman & Nicobar Islands
    Punjab Brown – Punjab, Haryana
    Mewari – Rajasthan
    Apiculture (Beekeeping)
    Apiculture is the science and culture of honeybees.
    Four common bee varieties in India: Apis cerana (Indigenous), Apis florea, Apis dorsata, Apis mellifera (Italian).
    India exported 61,333.88 MT honey worth Rs. 732.16 crore (2018-19).
    Major export destinations: USA, UAE, Saudi Arabia, Morocco, Qatar.

    Important Poultry Breeds and Distribution

    BreedDistribution
    AnkleshwarGujarat
    AseelChhattisgarh, Orissa, Andhra Pradesh
    BusraMaharashtra, Gujarat
    DankiAndhra Pradesh
    KadaknathMadhya Pradesh
    KalahastiAndhra Pradesh
    Kashmir FavorollaJammu & Kashmir
    MiriAssam
    NicobariAndaman & Nicobar Islands
    Punjab BrownPunjab, Haryana
    MewariRajasthan

    Mains Key Points

    Poultry sector is growing rapidly, crucial for protein supply and rural income.
    India’s poultry industry has regional concentration in South and West India.
    Kadaknath and other native breeds have cultural and commercial value.
    Apiculture contributes to honey production, pollination, and rural livelihood.
    Export potential is high, but challenges include disease outbreaks, feed costs, and climate stress.

    Prelims Strategy Tips

    India ranks 3rd in egg production, 18th in broiler production.
    Tamil Nadu is top egg producer; Andhra Pradesh leads in poultry & hatcheries.
    Kadaknath (Madhya Pradesh) is a GI-tagged chicken breed.
    India exported over 61,000 MT honey in 2018-19; USA is top importer.

    Sericulture, Fisheries and Blue Revolution in India

    Key Point

    India is the only country producing all five varieties of commercial silk and the 2nd largest silk producer in the world. It is also the 2nd largest fish producer globally, contributing over 5.43% to global fish output. The Blue Revolution has strengthened India’s inland and marine fisheries through aquaculture expansion, technology adoption, and government support.

    India is the only country producing all five varieties of commercial silk and the 2nd largest silk producer in the world. It is also the 2nd largest fish producer globally, contributing over 5.43% to global fish output. The Blue Revolution has strengthened India’s inland and marine fisheries through aquaculture expansion, technology adoption, and government support.

    Detailed Notes (27 points)
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    Sericulture in India
    Agro-based industry involving rearing of silkworms for raw silk production.
    India produces all 5 types of silk: Mulberry, Tasar, Oak Tasar, Eri, and Muga (unique golden silk of Assam).
    2nd largest silk producer globally, contributing ~20% of global silk.
    Mulberry silk dominates (71.8%), while Tasar, Eri, Muga together form ~28.2%.
    Major production states: Karnataka (leading), Andhra Pradesh, West Bengal, Tamil Nadu, Jharkhand, Assam & NE states.
    Importance: Provides rural employment, especially women; supports handloom and export industries.
    Fisheries in India
    India is 2nd largest fish producer globally after China; contributes 5.43% of global production.
    Total production: 13.42 million tonnes (2018-19) vs 0.75 million tonnes in 1950-51.
    Fisheries GDP contribution: 1.07% of national GDP & 5.3% of Agriculture GDP.
    Export: India exported ~1.37 million tonnes of seafood worth $7.76 billion (2020-21). Major export item: Frozen shrimp.
    Major marine fish: mackerel, sardines, tuna, prawns, hilsa.
    Major inland fish: rohu, catla, mrigal, pangasius, tilapia.
    Leading states: Andhra Pradesh (22% of total fish), West Bengal, Gujarat, Kerala, Tamil Nadu, Maharashtra, Odisha, Karnataka.
    Blue Revolution in India
    Launched: 1973-74 (first phase under 5th Five Year Plan); major boost in 1985-90 (7th Plan).
    Aim: Rapid increase in fish production & productivity via aquaculture, inland fisheries, and marine resources.
    Objective: Enhance protein-rich food supply, employment, exports, and socio-economic development of fishing communities.
    Components: Inland aquaculture, brackish water farming, marine capture fisheries, shrimp farming, ornamental fisheries.
    Key schemes:
    - Pradhan Mantri Matsya Sampada Yojana (PMMSY, 2020): target to double fish production to 22 million MT by 2024-25.
    - National Fisheries Development Board (2006).
    - Integrated Development of Inland Fisheries and Aquaculture (1985).
    - National Aquaculture Mission.
    Success: India has become the largest exporter of shrimp in the world.
    Challenges: Overfishing, marine pollution, climate change impact on marine ecosystems, lack of cold-chain infrastructure.

    Types of Silk Produced in India

    TypeCharacteristicsMajor States
    Mulberry71.8% share, reared on mulberry leavesKarnataka, Andhra Pradesh, Tamil Nadu
    TasarWild silk from forest areasJharkhand, Odisha, Chhattisgarh
    Oak TasarProduced on oak treesNorth-East states
    EriAlso called 'Ahimsa Silk', warm textureAssam, Meghalaya, Nagaland
    MugaGolden yellow, unique to AssamAssam

    Major Fish Producing States

    State/UTInland AreaCoastline (km)Key Features
    Andhra Pradesh11,514 km rivers, 553,055 ha97422% fish & 70% shrimp production
    Kerala3,220 km rivers, 126,584 ha590Traditional marine hub, Hilsa & Sardines
    Gujarat3,865 km rivers, 556,659 ha1600Longest coastline, diverse marine fish
    West Bengal2,525 km rivers, 570,429 ha158Hilsa hub, inland aquaculture
    Tamil Nadu7,420 km rivers, 764,208 ha10762nd in marine fish, major harbors
    Maharashtra29,530 km rivers, 8,224,569 ha7207th in fish, strong inland fisheries
    Odisha24,879 km rivers, 899,115 ha480Brackish water, marine & inland
    Karnataka5,853 km rivers, 571,885 ha300'Mackerel Coast'
    Goa250 km rivers, 3,644 ha104Small-scale coastal fisheries
    Puducherry7 km rivers, 1,718 ha45Small fishing economy

    Mains Key Points

    Sericulture provides rural employment, boosts handloom & textile exports.
    Fisheries sector contributes to GDP, nutrition security, and foreign exchange.
    Blue Revolution transformed aquaculture into a major growth driver.
    Challenges: overfishing, climate change, marine pollution, lack of infrastructure.
    Policy thrust: PMMSY, cold chain infra, sustainable aquaculture, export promotion.

    Prelims Strategy Tips

    India produces all 5 types of silk; Muga silk is unique to Assam.
    India is 2nd in global fish production and 1st in shrimp exports.
    Andhra Pradesh leads in total fish & shrimp production.
    Blue Revolution: started in 1970s, major boost in 1985-90.

    Agricultural Revolutions in India

    Key Point

    India has witnessed multiple agricultural revolutions, each focusing on different crops or products such as food grains, milk, oilseeds, fish, and poultry. These revolutions transformed Indian agriculture, making it self-sufficient in food and boosting exports.

    India has witnessed multiple agricultural revolutions, each focusing on different crops or products such as food grains, milk, oilseeds, fish, and poultry. These revolutions transformed Indian agriculture, making it self-sufficient in food and boosting exports.

    Agricultural Revolutions – Key Details

    RevolutionProduct/FocusFeaturesFather/LeaderPeriod
    Round RevolutionPotatoBoost potato production1965–2005
    Green RevolutionFood grains (Rice & Wheat)HYV seeds, fertilizers, mechanisation, irrigationNorman Borlaug, M.S. Swaminathan1966–1967
    Grey RevolutionFertilizers & WoolLinked with fertilizer use supporting Green Revolution1960s–1970s
    Pink RevolutionPrawn, Onion, MeatTechnological revolution in meat & poultry sectorDurgesh Patel1970s
    White Revolution (Operation Flood)MilkIncrease milk production, dairy farmer empowermentVerghese Kurien1970–1996
    Blue RevolutionFishRapid increase in fish production, aquaculture expansionDr. Arun Krishnan1973–2002
    Red RevolutionMeat & TomatoBoost productivity of meat and tomatoVishal Tiwari1980s
    Yellow RevolutionOilseedsIncrease production of edible oilsSam Pitroda1986–1990
    Brown RevolutionLeather, Coffee, CocoaOrganic farming, leather, coffee, soil improvementHiralal Chaudhari
    Golden Fibre RevolutionJuteIncrease jute production & productivity1990s
    Golden RevolutionFruits, Honey, HorticultureBoost in fruits, honey, animal husbandryNirpakh Tutaj1991–2003
    Silver RevolutionEggs & PoultryBoost in egg & poultry productionIndira Gandhi2000s
    Silver Fibre RevolutionCottonIncrease in cotton productivity2000s
    Protein RevolutionAgricultureTechnology-driven 2nd Green Revolution, Price Stabilization FundCoined by Narendra Modi & Arun Jaitley2014–2020
    Evergreen RevolutionOverall AgricultureSustainable agriculture, 11th Five-Year PlanM.S. Swaminathan2017–2022
    Black RevolutionPetroleumBoost petroleum, ethanol blending & biodiesel production

    Prelims Strategy Tips

    Green Revolution father: Norman Borlaug (global), M.S. Swaminathan (India).
    White Revolution (Operation Flood) father: Verghese Kurien.
    Blue Revolution father: Dr. Arun Krishnan.
    Yellow Revolution relates to oilseeds, Pink to meat/prawn, Silver to poultry/eggs.
    Protein Revolution: Coined by Narendra Modi & Arun Jaitley in 2014 Budget speech.

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