Weather shocks and pesticide purchases
利用法国2014-2019年邮政编码级别的农药购买数据，研究农民是否通过调整农药使用来应对天气冲击，并预测在RCP4.5气候变化情景下农药使用将增加7%至15%。
Abstract This paper investigates whether farmers adapt their pesticide use to cope with weather shocks. Using a unique, exhaustive dataset detailing all active substance purchases per zip code in France between 2014 and 2019, we econometrically explain abnormal pesticide purchase deviations by weather shocks. We identify heterogeneous weather impacts across pesticide types, seasons and locations. Because our analyses suggest limited year-to-year pesticide storage and farmers’ adaptation along other margins, we interpret our estimates as true weather impacts on pesticide use. Our preferred estimates suggest that, ceteris paribus, farmers increase pesticide use by seven to fifteen per cent in 2050 under a RCP4.5 climate change scenario.