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Land Resources & Agriculture – NDA Geography Notes
Coastal States, Gulfs, Straits, Islands and Maritime Zones of India
Indian Geography • Coastal Geography • PYQs Included
Introduction
Agriculture is the backbone of India’s economy. About half of India’s working population still depends on farming for their livelihood. India has the world’s largest cropped area — larger than China and the United States.
But Indian agriculture faces many challenges — small farm sizes, dependence on monsoon, degraded soils, and low productivity in dry regions.
NDA tests this chapter through questions on crop seasons, major crops and their growing conditions, leading producing states, farming practices like shifting cultivation and mixed farming, and the Green Revolution.
Understand the Topic
Characteristics of Indian Agriculture
India has the world’s largest cropped area. The cropping pattern is dominated by cereals. Average farm holding is too small — which is a major problem. All three statements are correct. [NDA tested via CDS]
Main reason for increase in agricultural production in recent decades:
The best reason is use of improved agricultural methods and technologies — including high-yielding variety (HYV) seeds, fertilisers, pesticides, and irrigation. NOT simply increase in area or conversion of barren land. [NDA 2011-I]
Main reason for low agricultural productivity in dry regions:
Dependence on erratic monsoon — dry regions get unreliable and insufficient rainfall, making crop production unstable. [NDA 2012-I]
Reasons for decrease in per capita land holdings:
- Rapid population growth — more people sharing the same land
- Practice of dividing land equally among heirs — each generation divides plots into smaller pieces
These two are the main reasons. [NDA tested via CDS]
India is a major producer of fruits and vegetables because of:
Variation in its agro-climatic conditions — different temperature, rainfall, soil, and altitude across regions allow a huge variety of crops to grow. [NDA 2009-II]
Cropping intensity = ratio of gross cropped area to net sown area. When this ratio is high, the same land is being cultivated multiple times in a year. [NDA tested via CDS]
Dry land farming in India is largely confined to areas with annual rainfall less than 75 cm. [NDA 2020-I]
Land left fallow for more than five years is called Cultivable Wasteland. [NDA 2024-II]
Marginal land is NOT a land use category — the official land use categories are forestland, pastureland, barren and wasteland, current fallow, fallow other than current fallow, net sown area, and land under non-agricultural uses. [NDA tested via CDS]
Crop Seasons
India has three main crop seasons:
Kharif (Monsoon Crops):
- Sown in June-July (beginning of monsoon)
- Harvested in October-November
- Depend on the Southwest Monsoon
- Examples: Rice, maize, jowar, bajra, cotton, jute, sugarcane, groundnut, soybean
Rabi (Winter Crops):
- Sown in October-November (after monsoon)
- Harvested in March-April
- Depend on winter rains (Western Disturbances) and stored moisture
- Examples: Wheat, barley, mustard, peas, gram (chickpea)
Barley is a Rabi crop. [NDA 2019-II]
Wheat benefits from rain caused by Western Disturbances. [NDA 2023-II]
Zaid (Summer Crops):
- Grown between the Rabi and Kharif seasons (April to June)
- Short duration crops in the dry hot summer
- Examples: Watermelon, cucumber, muskmelon, fodder crops
Major Food Crops
Rice:
- Type: Kharif crop
- Conditions: High temperature (above 25°C), heavy rainfall (150–200 cm), clayey soil with water retention
- Aus, Aman, and Boro are three different growing periods of rice in a year. [NDA tested via CDS]
- Rice grows in lowlands and river deltas — along with jute and tea — in areas with 180–250 cm rainfall and high summer temperatures. [NDA 2012-I]
- Leading producers: West Bengal (largest), UP, Punjab, Odisha, Andhra Pradesh
Wheat:
- Type: Rabi crop
- Conditions: Cool weather during growth, warm dry weather during ripening, 50–75 cm rainfall, well-drained loamy soil
- Benefits from Western Disturbances rain in winter. [NDA 2023-II]
- Leading producers: UP (largest), Punjab, Haryana, MP, Rajasthan
Millets (Jowar, Bajra, Ragi):
- Drought-resistant crops; grown in dry, poor soil areas
- Sorghum (Jowar) is categorised as a millet. [NDA tested via CDS]
- Bajra grows well in sandy and shallow black soils — mainly in Rajasthan, UP, and Gujarat. [NDA tested via CDS]
- Ragi is mainly cultivated in Karnataka and Tamil Nadu — grows in red and shallow black soil. [NDA tested via CDS]
Pulses:
- High protein crops; important for vegetarian diets
- Grown in dry conditions; nitrogen-fixing — improve soil fertility
- Leading producers: MP, Rajasthan, UP
Major Cash Crops
Sugarcane:
- Type: Kharif crop; takes 10–12 months to mature
- Conditions: Hot and humid climate; 75–150 cm rainfall; deep, rich loamy soil
- India is the world’s second largest producer of sugar (after Brazil)
- Leading states: UP (largest), Maharashtra, Karnataka, Tamil Nadu
- Peninsular sugar industry advantages: High yield per hectare, higher sucrose content, long crushing season
- Statement “Most Peninsular mills are along the east coast” is WRONG — they are mainly in the interior. [NDA tested via CDS]
Cotton:
- Type: Kharif crop
- Conditions: High temperature (25°C+), moderate to light rainfall, at least 100 frost-free days, deep black cotton soil
- India has the world’s largest cultivated area under cotton. [NDA tested via CDS]
- Leading states: Gujarat (largest), Maharashtra, Telangana, MP, Rajasthan
- The cotton industry suffered after Independence because most cotton mills had gone to West Pakistan. India retained the cotton growing areas but lost the mills. [NDA 2008-II]
- Gossypium species cultivated in India: G. arboreum, G. herbaceum, G. hirsutum, G. barbadense — all four are species of cotton. [NDA tested via CDS]
Jute:
- Type: Kharif crop
- Conditions: Hot and humid climate; 150–200 cm rainfall; well-drained loamy soil; flat alluvial plains
- Grows well on loamy soil; hot and humid conditions are ideal. [NDA 2013-II]
- Leading states: West Bengal (largest, about 80%), Bihar, Assam, Odisha
- Assam does not produce nearly 80% of jute — West Bengal does. Statement “Assam produces nearly 80% of jute” is WRONG. [NDA 2013-II]
- Jute is NOT significantly cultivated in Andhra Pradesh. [NDA tested via CDS]
- Jute is commonly cultivated with rice in rotation — NOT wheat. [NDA 2013-II]
Tea:
- Conditions: Tropical and subtropical climate; heavy rainfall 150–250 cm; well-drained acidic soil; NO lime in soil
- Soil should NOT contain lime — tea needs acidic soil. [NDA 2018-I]
- Tea is cultivated in the Nilgiri Hills of Tamil Nadu. [NDA 2007-II]
- Leading states: Assam (largest producer); West Bengal (Darjeeling); Tamil Nadu (Nilgiris)
- Match: Tea = Tamil Nadu (in the PYQ matching questions). [NDA 2006-II]
Coffee:
- Conditions: Warm and moist climate; spell of dry weather during ripening; rolling fields with good drainage; NOT strong sunshine above 35°C (this is wrong — coffee doesn’t need such extreme heat) [NDA 2017-I]
- Temperature above 35°C is NOT a requirement — it is actually harmful for coffee. [NDA 2017-I]
- Leading state: Karnataka (largest producer — Coorg, Chikkamagaluru)
- Varieties: Arabica, Robusta, and Liberica are varieties of coffee. [NDA tested via CDS]
Rubber:
- Conditions: Tropical climate; hot and humid; more than 200 cm rainfall; well-drained laterite soil
- Leading state: Kerala (largest producer)
- Kerala is the largest producer of natural rubber in India — TRUE. [NDA 2015-I]
- Match: Rubber = Kerala. [NDA 2006-II]
Tobacco:
- Leading states: Andhra Pradesh (largest), Gujarat, Karnataka
- Match: Tobacco = Andhra Pradesh. [NDA 2006-II]
Black Pepper:
- India’s most important spice
- Largest producer: Kerala [NDA tested via CDS]
Coconut:
- Lakshadweep has the highest productivity per hectare and highest oil content in nuts in the world. [NDA tested via CDS]
Golden Rice:
- A genetically modified crop that produces Vitamin A (beta-carotene). [NDA 2017-II]
Rajasthan is NOT prominent for plantation agriculture — plantation crops like tea, coffee, rubber are grown in humid tropical areas. Rajasthan is arid and unsuitable. [NDA tested via CDS]
Agriculture Practices
Shifting Cultivation (Jhum Cultivation):
- Practised mainly in Northeast India
- Also called slash-and-burn farming
- A patch of forest is cleared, crops are grown for 2–3 years, then the land is abandoned when soil fertility is exhausted
- After many years, the farmer returns to the same patch
- All three correct: practised in NE India; also called slash-and-burn; fertility exhausted in a few years [NDA tested via CDS]
- It is an example of subsistence farming. [NDA tested via CDS]
- Known by different names in different regions: Jhum (Northeast India), Milpa (Central America), Ladang (Southeast Asia) [NDA tested via CDS]
Mixed Farming:
- Growing several crops AND also rearing animals on the same farm. [NDA tested via CDS]
- Not just growing multiple crops — the rearing of animals is what makes it “mixed.”
Inter-cropping:
- Growing two or more crops in definite row patterns on the same piece of land at the same time. [NDA tested via CDS]
- This is different from mixed cropping (random mixture).
Plantation Farming:
- Single crop grown on large estates; mostly in humid tropics
- Statement I: Plantation farming has mostly been practised in humid tropics — TRUE.
- Statement II: Soil of humid tropics is highly fertile — FALSE (humid tropical soils are often laterite and poor). So Statement I is true but Statement II is false. [NDA 2016-I]
Intensive Subsistence Agriculture:
- Practised in India, Japan, Indonesia and much of Asia
- NOT predominantly practised in Canada — Canada uses large-scale commercial mechanised farming. [NDA 2021-I]
Commercial Grain Farming (Middle Latitude Grasslands):
- Large farm sizes, highly mechanised, extensive farming — all three are correct characteristics. [NDA 2011-II]
Major Farming Regions
| Farming Area | State |
|---|---|
| Doab | Uttar Pradesh |
| Char | Assam |
| Maidan | Karnataka (Mysore Plateau) |
| Terai | Punjab/UP/Uttarakhand [NDA tested via CDS] |
Coral Reefs in India
Major coral reef areas of India: [NDA 2017-I]
- Gulf of Kachchh (Gujarat)
- Gulf of Mannar (Tamil Nadu)
- Lakshadweep Islands
- Andaman and Nicobar Islands
All four are major coral reef areas. [NDA 2017-I]
Coral reefs are NOT found in the Gulf of Cambay (Gulf of Khambhat) — because the Gulf of Cambay has very turbid, muddy water and strong tidal currents that are unsuitable for coral. [NDA tested via CDS]
Largest area under coral reefs in India = Andaman and Nicobar Islands. [NDA tested via CDS]
Product-State Matching (NDA 2006-II):
| Product | Major Producer State |
|---|---|
| Tea | Tamil Nadu (Nilgiris) |
| Jute | Odisha (not WB in this question context) |
| Rubber | Kerala |
| Tobacco | Andhra Pradesh |
[NDA 2006-II]
Memory Trick
G-T-A-M-W-K-O-K-G
Gujarat – Tamil Nadu – Andhra Pradesh – Maharashtra – West Bengal – Kerala – Odisha – Karnataka – Goa
G T A M W K O K G — “Great Teachers Always Make Wonderful Knowledge Of Kind Goodness.”
Common Mistakes
- Students say Assam produces 80% of India’s jute. It is West Bengal that produces about 80% of India’s jute. Assam produces tea, not jute. [NDA 2013-II]
- Students say jute rotates with wheat. Jute rotates with rice — both are grown in the same humid regions of eastern India. [NDA 2013-II]
- Students say Ratnagiri bauxite is in Karnataka. Ratnagiri is in Maharashtra — this was directly tested in NDA 2015-I.
- Students say plantation farming is practised because humid tropical soils are fertile. Humid tropical soils are laterite soils — NOT fertile. Plantation farming is practised in humid tropics because of the suitable climate, not the soil. [NDA 2016-I]
- Students say coffee needs temperature above 35°C. Coffee needs moderate temperature (15–28°C). Temperatures above 35°C are harmful. [NDA 2017-I]
- Students say tea needs lime in the soil. Tea needs acidic soil — lime reduces acidity and harms tea. [NDA 2018-I]
- Students say increase in area under cultivation is the main reason for agricultural growth. The main reason is improved technology and HYV seeds — not expansion of cultivated area. [NDA 2011-I]
- Students say marginal land is a land use category. Marginal land is NOT an official land use category in India. [NDA tested via CDS]
- Students say coral reefs are found in Gulf of Cambay. The Gulf of Cambay (Khambhat) has no coral reefs — too turbid and tidal. [NDA tested via CDS]
- Students say Golden Rice produces Vitamin C. Golden Rice produces Vitamin A (beta-carotene). [NDA 2017-II]
Quick Revision
Agriculture Characteristics:
- India = world’s largest cropped area; dominated by cereals; small average holdings
- Best reason for production increase = improved technology and HYV seeds [NDA 2011-I]
- Low productivity in dry regions = dependence on erratic monsoon [NDA 2012-I]
- India diverse in fruits/vegetables = variation in agro-climatic conditions [NDA 2009-II]
- Per capita holding falls = rapid population growth + equal division among heirs
- Dry land farming = areas with <75 cm rainfall [NDA 2020-I]
- Land fallow >5 years = cultivable wasteland [NDA 2024-II]
- Cropping intensity = gross cropped area ÷ net sown area
Crop Seasons:
- Kharif = June-Nov; SW Monsoon; Rice, cotton, jute, sugarcane, bajra
- Rabi = Oct-April; winter; Western Disturbances; Wheat, barley, mustard, gram
- Barley = Rabi crop [NDA 2019-II]
- Wheat benefits from Western Disturbances rain [NDA 2023-II]
- Zaid = short summer crops (watermelon, cucumber)
Major Crops:
- Rice: heavy rain, hot climate; Aus/Aman/Boro growing seasons; WB largest producer
- Wheat: cool growth, warm dry ripening; UP largest producer
- Bajra: sandy/shallow black soil; Rajasthan, UP, Gujarat
- Ragi: red/shallow black soil; Karnataka, Tamil Nadu
- Sorghum (Jowar) = categorised as millet
Cash Crops:
- Sugarcane: UP largest; India 2nd largest sugar producer; Peninsular mills in interior (NOT east coast)
- Cotton: largest cultivated area in world; Gujarat largest; G. arboreum/herbaceum/hirsutum/barbadense = cotton species
- Jute: WB largest (80%); hot humid; loamy soil; rotates with RICE (not wheat) [NDA 2013-II]
- Tea: tropical/subtropical + heavy rain + acidic soil (NO lime); Assam largest; Nilgiri Hills (TN)
- Coffee: warm moist + dry during ripening + rolling fields + NOT >35°C; Karnataka largest
- Rubber: Kerala largest [NDA 2015-I]
- Tobacco: Andhra Pradesh largest [NDA 2006-II]
- Black pepper: Kerala largest
- Coconut: Lakshadweep = highest productivity + highest oil content
Plantation farming: Statement 1 correct (humid tropics); Statement 2 WRONG (humid tropical soils are poor) [NDA 2016-I]
Rajasthan = NOT prominent for plantation agriculture
Agriculture Practices:
- Shifting cultivation = Jhum (NE India) = Milpa (C. America) = Ladang (SE Asia) = slash-and-burn = subsistence farming
- Mixed farming = crops + rearing animals [NDA tested via CDS]
- Inter-cropping = two or more crops in definite row patterns
- Intensive subsistence = India, Japan, Indonesia; NOT Canada [NDA 2021-I]
- Commercial grain farming = large farms, mechanised, extensive (middle latitude grasslands)
GM Crops:
- Golden Rice = Vitamin A (beta-carotene) [NDA 2017-II]
- Bt Cotton = insect-resistant cotton
Coral Reefs:
- Found in: Gulf of Kachchh, Gulf of Mannar, Lakshadweep, Andaman & Nicobar Islands — ALL FOUR [NDA 2017-I]
- NOT found in: Gulf of Cambay (too turbid, tidal) [NDA tested via CDS]
- Largest coral reef area = Andaman and Nicobar Islands [NDA tested via CDS]
Previous Year Questions
This chapter contains previous-year questions from NDA (2007–2025) with Detailed Solutions, Exam-wise classification, Concept-wise explanations and Difficulty analysis.
