The spillover effect of direct competition between marketing cooperatives and private intermediaries: Evidence from the Thai rice value chain
The spillover effect of direct competition between marketing cooperatives and private intermediaries: Evidence from the Thai rice value chain
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DOI：
10.1016/j.foodpol.2021.102051
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发表时间：
2021-06-11
期刊：
影响因子：
6.5
通讯作者：
Demont, Matty
中科院分区：
文献类型：
--
作者：
Kumse, Kaittisak;Suzuki, Nobuhiro;Demont, Matty
尽管人们普遍认为，营销合作社的好处可能超出参与的农民，但合作社对不参与的农民的影响却知之甚少。本文利用泰国家庭语言的外生变异来获得营销合作社溢出效应的工具变量估计。我们假设，在市场合作社和私人中介机构（处理区）之间存在直接竞争的地区，向私人中介机构出售大米的农民可能比在其他地区出售大米的农民获得更高的价格。利用2018/19营销年度泰国稻农的家庭数据，我们发现强有力的证据表明，处理区农民从私人中介那里获得的价格比比较区农民高出10.9%。我们的研究结果为关于营销合作社在农业食品价值链中的作用的粮食政策辩论提供了至关重要的意义。特别是，评价营销合作社对贫困农民的包容性不应仅限于对其成员进行抽样和分析。如果不考虑溢出效应，可能导致对营销合作社对社会福利的影响的严重低估。
Despite the widespread belief that marketing cooperatives' benefits may extend beyond participating farmers, little is known about the cooperative's effect on nonparticipating farmers. This paper exploits exogenous variation in language spoken at home in Thailand to obtain instrumental variable estimates of the spillover effect of marketing cooperatives. We hypothesize that farmers who sell rice to private intermediaries in the area where there is direct competition between marketing cooperatives and private intermediaries (treated areas) are likely to receive a higher price than those who sell rice in other areas. Using household-level data of rice farmers in Thailand in the marketing year 2018/19, we find strong evidence that farmers in treated areas receive 10.9% higher prices from private intermediaries than those in comparison areas. Our results provide crucial implications for food policy debates regarding the role of marketing cooperatives in agri-food value chains. In particular, evaluating the inclusiveness of marketing cooperatives toward poor farmers should not be limited to sampling and analyzing its members only. Failure to consider the spillover effect could lead to substantial underestimation of the impact of marketing cooperatives on societal welfare.