文章基本信息

标题：Big Constraints or Small Returns? Explaining Nonadoption of Hybrid Maize in Tanzania
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作者：Kathage, Jonas ; Qaim, Matin ; Kassie, Menale 等
期刊名称：Journal of Food Distribution Research
印刷版ISSN：0047-245X
出版年度：2013
出版社：Food Distribution Research Society
摘要：Modern technologies are often not widely adopted among smallholder farmers in Sub-Saharan Africa. Several adoption constraints have been discussed in the literature, including limited access to information. Using survey data from farmers in Tanzania and the average treatment effect framework, we question the hypothesis that limited information is an important constraint for the adoption of hybrid maize technology. While we find an adoption gap from incomplete awareness exposure, this gap is sizeable only in the east of Tanzania, where productivity effects of hybrids are small. In the north, where adoption is much more beneficial, almost all farmers are already aware of hybrids. The results suggest that exposure to a new technology may be a function of expected returns to adoption. We also test for other constraints related to credit and risk, which do not determine adoption significantly. More generally, nonadoption of technologies is not always a sign of constraints but may also indicate low benefits. Some policy implications are discussed.
关键词：farm survey;technology adoption;hybrid maize;Tanzania