Dryland and Rainfed Farming

Dryland and rainfed farming denotes crop production that relies on natural precipitation as the sole or principal source of soil moisture, without supplementary irrigation. In the Indian classification framework used by the Indian Council of Agricultural Research (ICAR) and the Central Research Institute for Dryland Agriculture (CRIDA, established at Hyderabad in 1985), rainfed agriculture is the broad category of cultivation in areas receiving more than 750 mm but less than 1,150 mm of annual rainfall, while dryland or dry farming applies to the more arid sub-category receiving below 750 mm where moisture conservation is the binding constraint. The conceptual basis was consolidated through the All India Coordinated Research Project for Dryland Agriculture (AICRPDA), launched in 1970, and the technology missions of the 1980s. Rainfed agriculture occupies roughly 51 per cent of India's net sown area and contributes about 40 per cent of total food production, supporting the majority of the country's coarse cereals, pulses, oilseeds and cotton.

The procedural mechanics of dryland farming centre on harvesting, conserving and efficiently using a limited and erratic moisture supply. The sequence begins with moisture conservation through deep summer ploughing, contour bunding and the construction of field bunds that arrest runoff and promote in-situ infiltration. Cultivators then practise off-season tillage to create a soil mulch that breaks capillary action and reduces evaporative loss. Sowing is timed precisely to the onset of the monsoon, frequently using dry seeding ahead of the first rains so that germination coincides with assured soil moisture. Seed rates are kept moderate to avoid moisture competition, and crops are arranged in wider row spacing. Throughout the season, inter-cultivation creates a dust mulch, and anti-transpirants or kaolin sprays may be applied during dry spells.

Beyond in-situ conservation, dryland systems deploy several risk-distribution variants. Mixed and intercropping systems—such as sorghum with pigeonpea, or pearl millet with cluster bean—spread the probability of harvest failure across crops with differing moisture requirements and maturity periods. Where rainfall is severely deficient, farmers shift to contingency cropping, substituting short-duration, drought-escaping varieties when the monsoon is delayed. Watershed development integrates farm ponds, percolation tanks, check dams and gully plugs at the micro-catchment scale to capture runoff for a single life-saving or protective irrigation at the grain-filling stage. The Ridge and Furrow and Broad Bed and Furrow (BBF) layouts, developed at ICRISAT, manage both excess and deficit moisture on Vertisols.

Contemporary policy in India institutionalises these practices. The National Mission on Sustainable Agriculture (NMSA), one of the eight missions under the National Action Plan on Climate Change of 2008, operationalised the Rainfed Area Development (RAD) component to promote integrated farming systems. The Integrated Watershed Management Programme, restructured in 2009 and folded into the Pradhan Mantri Krishi Sinchayee Yojana (PMKSY) launched in 2015, channels investment into ridge-to-valley treatment. CRIDA's annual District Agricultural Contingency Plans, prepared for more than 650 districts, codify crop and management alternatives for delayed or aberrant monsoons. State-level dryland missions in Maharashtra, Karnataka and Telangana—regions dominated by the Deccan basaltic plateau—have expanded farm-pond programmes since 2015.

Dryland and rainfed farming must be distinguished from adjacent terms with which it is frequently conflated. Irrigated agriculture supplies water artificially through canals, tube wells or tanks, decoupling cropping from rainfall variability. Dry farming is the most moisture-constrained subset of rainfed agriculture (below 750 mm), where the emphasis is exclusively on moisture conservation and a single crop is grown in the rainy season. Aerobic rice and System of Rice Intensification address water economy within partially irrigated systems and are not rainfed in the strict sense. Shifting cultivation (jhum) and dryland farming both occur without irrigation, but the former is defined by rotational land abandonment rather than moisture management. Watershed development, while central to dryland practice, is a landscape-scale hydrological intervention rather than a farming system itself.

Several controversies and recent developments shape the field. Critics note that public investment per hectare in rainfed regions remains a fraction of that in irrigated commands, perpetuating yield gaps and rural distress in the very districts—Vidarbha, Marathwada, Anantapur—where agrarian crises are most acute. The push to extend Minimum Support Price procurement and crop insurance under the Pradhan Mantri Fasal Bima Yojana to coarse cereals and pulses responds to this imbalance. Climate change introduces greater intra-seasonal rainfall variability, increasing the frequency of mid-season dry spells that conventional dryland calendars were not designed to absorb. The 2018 NITI Aayog framework on doubling farmers' income identified rainfed transformation, millet promotion (reinforced by the UN International Year of Millets, 2023) and natural farming as priority levers.

For the working practitioner—whether a UPSC aspirant addressing GS Paper 1 geography and GS Paper 3 agriculture, an agricultural desk officer, or a development researcher—dryland and rainfed farming is a structural fact of Indian agriculture rather than a residual category. It frames the spatial distribution of coarse cereals and oilseeds across the Deccan, central India and the rain-shadow tracts, and explains why monsoon performance translates directly into rural demand and food-price dynamics. Mastery of the rainfall thresholds, the conservation toolkit, the watershed paradigm and the institutional architecture of NMSA and PMKSY equips the analyst to assess drought policy, climate adaptation and the persistent equity gap between irrigated and rainfed India.