Impact of climate-smart agricultural practices on smallholder wheat yields and income stability in drought-prone regions: An econometric analysis.

Project Abstract

This study investigates the effectiveness of climate-smart agricultural practices (CSA) in enhancing smallholder wheat yields and income stability in drought-prone regions, employing econometric analysis to quantify yield responses, risk modulation, and profit variability across heterogeneous farm households. Using a multi-stage sampling approach, data were collected from 1,200 wheat-producing households across five drought-prone agro-ecological zones, capturing CSA adoption status, input usage, agronomic practices, weather patterns, soil health indicators, and household socio-economic characteristics over a ten-year period. The analysis integrates crop yield models with probability of income shocks to evaluate how CSA components—improved seed varieties, optimized fertilizer regimes, water-saving irrigation (drip and scheduling), soil moisture conservation (mulching and residue management), and agroforestry or shelterbelts—interact with microclimatic stressors to influence mean yields and the variance of incomes. A robust econometric framework combining fixed-effects panel models, instrumental variable techniques to address endogeneity, and a Bayesian hierarchical approach is employed to capture unobserved heterogeneity and temporal dynamics. The study also uses a hedge ratio and value-at-risk (VaR) methodology to assess income stability under drought scenarios and extreme heat events. Key findings indicate that on average, CSA adoption is associated with a statistically significant increase in wheat yields by 12–18%, with higher yield gains observed among farms integrating multiple CSA components and those with access to extension services and credit. Regarding income stability, CSA adoption reduces the standard deviation of net income by 9–15% and lowers the probability of catastrophic income loss (defined as a threshold decline) by 20–28%, particularly where irrigation efficiency and soil health improvements are combined with risk-aware input management. Subgroup analysis reveals that smallholder farmers with larger plot sizes, better market access, and stronger social networks reap greater benefits from CSA bundles, while marginal farmers face constraints related to upfront costs and risk perceptions. The study further identifies channel mechanisms through which CSA enhances productivity and resilience water-use efficiency gains from optimized irrigation, reduced evapotranspiration through mulching and residues, nutrient-use efficiency from precise fertilizer applications, and climate information services that support timely planting and risk mitigation decisions. Policy implications emphasize prioritizing scalable CSA packages tailored to agro-ecological zones, subsidizing initial investment in irrigation and soil health practices, strengthening rural financial services, and promoting farmer field schools and participatory-extension programs to accelerate adoption. The research contributes to the literature on agricultural risk management, climate adaptation in staple food supply chains, and the empirical linkage between climate-smart interventions and livelihood resilience for smallholder wheat farmers in drought contexts.

Project Overview

What This Project Is About

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