and supply factors that can result in such an equilibrium. We then empirically study the disruption of the maize seed … allowed a local seed company to expand and target the area with adaptively-bred maize varieties. A three-year RCT reveals that …This paper explores the idea that competitive seed systems may underserve farmers in small, agro-ecological niches …

fertilizer amounts and the marginal returns to fertilizer use. The results demonstrate the key changes behind this silent maize …Since independence a quiet revolution has taken place in maize production in the Sahel with Mali increasing production … more than ten-fold and yields going up ~2% a year. This research work uses farm level panel data from southern Mali's maize …

economically significant increases in output, yields, and profits. In our preferred specification, maize production increases by 24 …

In an experiment providing fertilizer grants to women rice farmers in Mali, we found that women who received fertilizer … increased both the quantity of fertilizer they used on their plots and complementary inputs such as herbicides and hired labor … level of output, we find no evidence that profits increased. Our results suggest that fertilizer's impact on profits is …

higher welfare than either laissez faire or heavy subsidies by helping present-biased farmers commit to fertilizer use …While many developing-country policymakers see heavy fertilizer subsidies as critical to raising agricultural … politicized, inefficient distribution of fertilizer supply. We model farmers as facing small fixed costs of purchasing fertilizer …

with taking up and following through with a new technology: a tree species that provides private fertilizer benefits to …

, Indonesia, and the United States. When we aggregate across all products, most of the countries analyzed experienced a decline in …