Crop diversity and farm income: evidence from a large-scale national survey

Purpose This study aims to evaluate the effectiveness of crop diversification in increasing the income of farm households. In addition, this study introduces the impact of natural disasters in the analysis to determine how diversification helps mitigate the negative effect of disasters on farm income. More importantly, the study also analyses the effect of diversification on farm income by farm class to see where the benefits of diversification are concentrated. Design/methodology/approach This study uses a linear model, in which agricultural income is expressed as a function of diversification, natural disasters and several control variables. Diversification is measured using the Simpson index of diversification. The linear model is enhanced with the inclusion of an interaction term of natural disasters with the diversification index to shed light on the role of diversification in negating their harmful effect on agricultural income. Finally, to analyze the impact of institutional variables on farm income, the interactions of diversification with irrigation, insurance, usage of technical information and formal training are incorporated in the linear model. Findings The study highlights the importance of demographic, farm and institutional variables in raising farm income. The study suggests that an increase in education level, irrigation, usage of technical information and possession of Kisan Credit Card (KCC) have a positive impact on agricultural income. The study reveals that crop diversification has a positive impact on farm income and the benefits of diversification are conditioned by institutional factors. Thus, there is a need for policy intervention to ensure increased irrigation facilities along with extension services to provide information to the farm households. It has been found that small farmers gain more from crop diversification than larger farmers. Furthermore, the results show that natural disasters negatively impact farm income, but their impact can be mitigated by higher levels of diversification. Originality/value The results of the study are based on the recent unit-level data from the 77th Round of the National Sample Survey Office survey. The survey covers a large number of farm households and reports information for the year 2018–2019.