Job Market Paper: Unintended Environment and Health Consequences of Distortionary Fertilizer Subsidies
Governments worldwide subsidize agricultural inputs to support farmers and food production. Subsidies that result in exceptionally low prices encourage farmers to deviate from optimal application levels and result in the overuse of fertilizers. This paper examines the unintended environmental and health consequences of increased fertilizer use driven by subsidies. In 2010, India implemented a fertilizer subsidy change favoring nitrogen, which led to higher relative prices for phosphorus and potassium fertilizrs. Leveraging the timing of this policy and exploiting exogenous variation in pre-determined geographic characteristics such as soil texture and river flow direction, I find significant effects of the subsidy on nitrogen pollution in water bodies and infant mortality in urban areas.