Participation in Pest Management Groups
研究北卡罗来纳州农民参与害虫管理小组的影响因素，发现种植时间竞争作物的比例、农场规模、小组价格、推广服务补贴、预期作物产量以及个人与小组害虫控制需求差异显著影响参与决策，采用最大似然logit估计。
Abstract When a group of farmers joins together to jointly control pests, usual marginal conditions for optimal input use are modified. A study of North Carolina farmers vealed that farmer participation in pest management groups is significantly affected by the percentages of their acres planted in a time‐competing crop, farm size, group price, extension service subsidies, expected crop yield, and the deviation between individual and group pest control demand levels. A maximum likelihood logit estimation procedure is used.