Rainfed Agriculture in the Eastern Ghats of Andhra Pradesh: Climate Risks, Soil and Water Management, Crop Diversification and Livelihood Pathways – Review
Abstract
Rainfed agriculture is the dominant production environment for a large proportion of India's smallholder agriculture and remains particularly important in the Eastern Ghats, where farming systems are exposed to variable rainfall, short or shifting growing windows, soil erosion, low soil fertility, limited irrigation and weak access to markets and production services. This review synthesizes the material supplied by the authors on rainfed agriculture in the Eastern Ghats with evidence from Indian agricultural and ecological literature, with emphasis on climate-resilient soil and water management, crop and cropping-system diversification, integrated nutrient management, contingency planning, farming-system approaches and institutional support. The review places the Eastern Ghats of Andhra Pradesh, especially the tribal and rainfed production landscapes of Alluri Sitarama Raju District, within the wider national rainfed-agriculture context. Published evidence shows that rainwater harvesting and supplemental irrigation can substantially improve the productivity and economic performance of rainfed systems; conservation agriculture, land configuration, residue or biomass mulching and integrated nutrient management can improve soil moisture availability and resource-use efficiency; and diversification through millets, pulses, oilseeds, livestock and agroforestry can reduce climatic and income risk. District-level rainfall information also illustrates the importance of inter-annual variability: the NABARD district profile reports normal annual rainfall of 1,202.02 mm and actual annual rainfall of 1,256, 1,117 and 1,057 mm in 2019–20, 2020–21 and 2021–22, respectively. The review argues that the most appropriate pathway for the Eastern Ghats is not a single technology but a location-specific package integrating soil-water conservation, rainwater harvesting, climate-informed crop planning, improved varieties, balanced nutrition, diversified farming systems, mechanization access, farmer institutions, extension and market linkages. Priority research should combine long-term weather and soil datasets with participatory on-farm trials to quantify yield stability, water productivity, profitability, soil-carbon change and livelihood resilience.
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Introduction
Rainfed agriculture is not a residual form of irrigated agriculture; it is a distinct production system in which the timing, amount and distribution of rainfall determine the feasible crop calendar, yield potential and risk profile. National assessments have consistently shown that a large share of India's cultivated area remains dependent on rainfall and that rainfed systems contribute substantially to food grains, pulses, oilseeds, coarse cereals and livestock feed. ICAR-CRIDA reports that, even after realization of irrigation potential, a substantial proportion of India's net sown area will remain rainfed, while the productivity of rainfed agriculture has increased but continues to show large yield gaps among regions and between research and farmers' fields (ICAR-CRIDA, 2026; Rao et al., 2016).
The Eastern Ghats present a particularly heterogeneous rainfed environment. The landscape includes hills, plateaus, valleys and sloping uplands, with strong spatial variation in rainfall, elevation, soil depth, slope and access to irrigation. In the tribal-dominated highlands of Andhra Pradesh, farming is closely linked to household food security, livestock, forest resources and local markets. Consequently, crop failure has consequences beyond yield: it affects food availability, cash income, employment, fodder supply and migration decisions. The authors' original bulletin emphasizes the same interconnected constraints—water scarcity, land degradation, drought, poor infrastructure, weak technology dissemination, poverty and market limitations—as central barriers to sustainable dryland development.
The scientific basis for climate-resilient rainfed agriculture has strengthened substantially. Indian research has demonstrated the importance of in-situ moisture conservation, runoff harvesting, supplemental irrigation, soil organic matter management, drought-tolerant crops and varieties, intercropping, contingency crop planning and diversified farming systems (Chary et al., 2020; Jinger et al., 2018; Rao et al., 2016; Srinivasa Rao & Gopinath, 2016). Water harvesting is especially important because rainfall deficits are often accompanied by periods of intense runoff. Sharma et al. (2010) estimated that 114 billion m³ of surplus rainfall could potentially be harvested from 28.5 million ha of suitable rainfed area in India, and concluded that a single supplemental irrigation could produce large gains in rainfed production under improved management.
This review therefore reframes the authors' earlier bulletin as a contemporary, evidence-based review suitable for the Journal of Agriculture and Ecology Research International. The objective is to synthesize the major constraints and opportunities in rainfed agriculture of the Eastern Ghats of Andhra Pradesh and to propose a practical framework that integrates natural-resource management, crop production, climate-risk management, livelihood diversification and institutional support.
Novelty and Contribution of this Review: While numerous reviews on rainfed agriculture in India exist (e.g., Rao et al., 2016; Srinivasa Rao & Gopinath, 2016; Chary et al., 2020), most address either specific technologies or broad national contexts. This review makes three specific contributions. First, it focuses explicitly on the Eastern Ghats of Andhra Pradesh—a heterogeneous, tribal-dominated, and comparatively under-documented rainfed region—and integrates district-level rainfall variability data to contextualize the analysis. Second, it synthesizes evidence across five integrated themes (climate risk, soil-water-nutrient management, crop diversification, farming-system resilience, and institutional pathways) within a single framework, rather than treating these as separate domains. Third, it provides a structured research agenda with priority questions and measurable indicators tailored to the Eastern Ghats, together with an integrated climate-resilient management framework that can guide both research and extension. By distinguishing between demonstrated treatment effects and proposed management pathways, the review aims to support evidence-based decision-making under uncertainty.
Conclusion
Rainfed agriculture in the Eastern Ghats of Andhra Pradesh is a high-risk but high-potential production system. The major constraints—rainfall variability, drought and dry spells, runoff and erosion, low soil fertility, limited irrigation, small holdings, weak market access and inadequate institutional support—interact to suppress productivity and increase livelihood vulnerability. Published evidence demonstrates that substantial gains are possible through integrated management of rainfall, soil, nutrients and cropping systems.
For the Eastern Ghats, the most appropriate strategy is a location-specific climate-resilient package based on: (1) in-situ soil and moisture conservation; (2) decentralized rainwater harvesting and strategic supplemental irrigation; (3) soil-test-based integrated nutrient management and organic-matter restoration; (4) diversified and climate-suitable crops and intercropping; (5) contingency planning based on weather information; (6) integrated crop–livestock–tree systems; and (7) stronger access to machinery, credit, insurance, extension and markets. Future research should quantify the long-term effects of these packages on yield stability, water productivity, soil carbon, profitability and livelihood resilience under the specific agro-ecological conditions of the Eastern Ghats.
Limitations of the Review: This is a narrative review based on published literature and publicly available institutional information; it does not present new experimental data. The evidence base is weighted toward Indian sources, with limited engagement with international literature from comparable rainfed regions. A formal systematic search strategy was not employed, and the possibility of publication or selection bias cannot be excluded. The recommendations presented here are syntheses and inferences from the reviewed literature rather than demonstrated treatment effects, and their applicability to specific farms, soils, and seasons will require local validation. Climate change projections for the Eastern Ghats were not analyzed in this review; future work should incorporate downscaled projections to anticipate future risks. Despite these limitations, the review provides a structured synthesis that can guide research, extension, and policy in the region.
References
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