By Marcel Fafchamps & Bart Minten from the International Food Policy Research Institute and Oxford University. The purpose of this study is to estimate the bene.ts that Indian farmers derive from market and weather information delivered by their mobile phone.We conduct a controlled randomized experiment in 100 villages of Maharashtra. We find no statistically significant average effect of treatment on the price received by farmers, on crop losses resulting from rainstorms, or on the likelihood of changing crop varieties and cultivation practices. Treated farmers do appear to make use of the RML service and they associate RML information with a number of decisions they have made. But, based on the available evidence, it appears that on average they would have taken similar decisions eventually, with or without RML.