🌾 Introduction to Rainfed Agriculture

Rainfed agriculture forms the production base of large semi-arid and sub-humid regions, where rainfall behavior directly controls crop planning and farm risk.

---

What is Rainfed Agriculture?

Rainfed agriculture is the practice of growing crops entirely dependent on rainfall for water supply, without any supplementary irrigation. It is also referred to as dryland agriculture or dryland farming.

Importance in India

• 57% of net sown area (about 80 million ha) is rainfed
• Contributes 40% of national food production
• Produces 85% of coarse cereals, 83% of pulses, 70% of oilseeds, 65% of cotton
• Supports 60% of livestock population
• 108 million farmers depend on rainfed agriculture

Dryland vs Rainfed Agriculture

Feature	Dryland Agriculture	Rainfed Agriculture
Rainfall	<750 mm	750–1150 mm
Growing period	<120 days	120–180 days
Moisture stress	Severe	Moderate
Crops	Pearl millet, sorghum, minor millets	Rice, maize, cotton, soybean
Region	Rajasthan, Gujarat, Deccan plateau	Eastern India, central India

Constraints of Rainfed Agriculture

Climatic

• Erratic rainfall: High coefficient of variation (30–40%)
• Dry spells: Intra-seasonal droughts of 2–4 weeks
• Late onset/early withdrawal of monsoon
• High evapotranspiration: 5–8 mm/day during kharif season

Soil-Related

• Low organic matter (<0.5%)
• Shallow soil depth (many areas <45 cm)
• Low water-holding capacity (sandy soils) or poor drainage (vertisols)
• Multi-nutrient deficiency (N, P, S, Zn, B)

Socio-Economic

• Small and marginal farmers (80% have <2 ha)
• Low investment capacity
• Poor access to markets and technology
• High risk — leads to conservative farming behavior

Key Technologies for Rainfed Agriculture

1. Rainwater harvesting: Capture and store rainfall for later use
2. In situ moisture conservation: Techniques to retain rainfall where it falls
3. Drought-tolerant varieties: Short-duration, deep-rooted cultivars
4. Soil health improvement: Organic matter addition, nutrient management
5. Contingency crop planning: Flexible plans based on monsoon behavior

Summary Cheat Sheet

Topic	Quick Recall
Rainfed agriculture	Crop production dependent on rainfall, without assured irrigation
National relevance	Majority of cropped area is rainfed and supports key food/oilseed/pulse systems
Core constraints	High rainfall variability, runoff losses, shallow soils, low investment capacity
Priority interventions	In-situ moisture conservation, rainwater harvesting, drought-resilient varieties

References

2 sources • [1] [2]

[1]

Indian Council of Agricultural Research (ICAR)

Official

[2]

ICAR-CRIDA: Dryland Agriculture and Contingency Planning

Official