Agricultural intensification through multiple-season farming: Effects on resiliency, food security and nutrition
利用马拉维面板数据，研究多季种植对家庭粮食安全、儿童营养和韧性的影响，发现多季种植显著改善粮食安全，尤其对资产丰富和男性户主家庭，但对儿童营养无显著影响。
Agricultural intensification is key to improving food security, nutrition, and resilience. While most approaches focus on increasing productivity using improved inputs like fertilizers, an alternative, relatively understudied method involves multiple-season farming—cultivation across multiple periods in a year, enabled by conditions such as irrigation or alternative water access. Using panel data from the World Bank Living Standards Measurement Study (2010–2019) in Malawi, we examine how multiple-season farming shapes household food security, child nutrition, and resilience, defined as persistent food security over time. To mitigate selection bias, we employ fixed-effects and instrumental variable fixed-effects models. We find that multiple-season farming is statistically significantly associated with improved household food security (at the 1% level), particularly for asset-rich and male-headed households. Multiple season farmers cultivate more diverse crops and engage in market sales, which enhances their food supply. However, we find no significant impact on child nutrition. Using Cissé and Barrett’s (2018) moment-based method to estimate resilience, we provide suggestive evidence that multiple-season farming also positively affects household resilience. These results point to the potential of multiple-season farming to bolster food security and help farmers adapt to climate change. Our results also highlight the need for interventions that support poor and female-headed households to access the inputs needed for multiple season farming. • Multiple season farmers consume one more food group weekly and have a higher Food Consumption Score. • Multiple season farmers cultivate 1–2 more crop types and are more likely to sell crops in markets. • Multiple season farming (MSF) and resiliency are positively associated though this result is not robust to an IV specification. • MSF positively impacts the food security of better-off and male-headed households. • We do not find a statistically significant relationship between MSF and child nutrition.