Group membership and certification effects on incomes of coffee farmers in Uganda
Group membership and certification effects on incomes of coffee farmers in Uganda
复制标题
团体成员资格和认证对乌干达咖啡农收入的影响
DOI：
10.1093/erae/jby022
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发表时间：
2018
影响因子：
3.4
通讯作者：
E. Schmid
中科院分区：
文献类型：
--
作者：
Brian Ssebunya;Ulrich B. Morawetz;C. Schader;M. Stolze;E. Schmid
在科学文献中发现了认证对小农收入影响的不同之处。未被观察到的农民群体的异质性可能是原因之一。对于乌干达长期存在的罗布斯塔咖啡农民群体，我们发现认证对农场净收入没有显著影响。但是，我们发现，认证和非认证农民之间的净农场收入差异20个百分点，这可以用会员资格持续时间来解释。相比之下，最近成立的认证阿拉比卡咖啡农民团体对农场净收入的积极影响为151%，部分原因是垂直一体化程度更高。无论有没有认证，长期的团体成员资格都被发现具有积极的收入效应。
Discrepancies in certification effects on smallholder incomes have been found in scientific literature. Unobserved farmer-group heterogeneity is a likely reason. For the long-standing Robusta coffee farmer-groups in Uganda, we find no significant effect of certification on net-farm income. But, we find 20 percentage point differences in net-farm income between certified and non-certified farmers explained by membership duration. In contrast, the recently founded certified Arabica coffee farmer-groups have positive net-farm income effects of 151 per cent, partly explained by a higher degree of vertical integration. With or without certification, long-standing group membership is found to have positive income effects.