Effect of agricultural extension services in the post-reform era since the mid-2000s on pesticide use in China: evidence from rice production

Abstract

Pesticide overuse has resulted in serious ecological problems. Agricultural extension services play a key role in influencing farmers’ pesticide use. China has the world's largest public agricultural extension system, which has experienced a twisting path of reforms over the past four decades. However, there is little empirical evidence regarding the effects of agricultural extension services in the post-reform era since the mid-2000s. This study examines the effect of agricultural extension services in the post-reform era on pesticide use in China, using survey data of 1963 rice farmers in 2016 and 2018. Our results indicate that only 22.5% of surveyed farmers adopted agricultural extension services. After addressing the self-selectivity issue, the treatment effects model revealed that agricultural extension services in the post-reform era resulted in a 3.01 kg/ha reduction in total pesticide use, a 0.86 kg/ha reduction in application rate of active ingredients, and a 250 CNY/ha reduction in pesticide expenditure related to rice production. Our findings provide sound evidence that agricultural extension services in the post-reform era can result in a reduction in pesticide use for rice production. More effective efforts should be made to reinforce the provision of agricultural extension services and encourage farmers to adopt these services.

Keywords

• agricultural extension service
• pesticide use
• self-selectivity
• treatment effects model