MADHYA PRADESH, INDIA — Komal Yadav has been farming for 17 years in Dakaychya, a village in the Dewas district of Madhya Pradesh. She used to produce commercial field crops like wheat and soybean on her family’s 5-bigha (2.5-acre) plot. Vegetable cultivation was less common in her village due to periodic scarcity of water. Komal…