Omotilewa Oluwatoba J, Ricker-Gilbert Jacob, Ainembabazi John Herbert, Shively Gerald E
Department of Agricultural Economics, Purdue University, West Lafayette, IN 47907, USA.
Development Economics Data Group, World Bank, 1818 H Street NW, Washington, DC 20433, USA.
J Dev Econ. 2018 Nov;135:176-198. doi: 10.1016/j.jdeveco.2018.07.006.
We use panel data from a randomized controlled trial (RCT) administered among 1200 smallholders in Uganda to evaluate input use and food security impacts of an improved maize storage technology. After two seasons, households who received the technology were 10 percentage points more likely to plant hybrid maize varieties that are more susceptible to insect pests in storage than traditional lower-yielding varieties. Treated smallholders also stored maize for a longer period, reported a substantial drop in storage losses, and were less likely to use storage chemicals than untreated cohorts. Our results indicate that policies to promote soft kernel high-yielding hybrid maize varieties in sub-Saharan Africa should consider an improvement in post-harvest storage as a complementary intervention to increase adoption of these varieties.
我们使用在乌干达1200名小农户中进行的一项随机对照试验（RCT）的面板数据，来评估一种改良玉米储存技术对投入使用和粮食安全的影响。两个季节后，采用该技术的家庭种植杂交玉米品种的可能性比传统低产品种高出10个百分点，而杂交玉米品种在储存时比传统品种更容易受到虫害。接受处理的小农户储存玉米的时间也更长，报告称储存损失大幅下降，并且与未接受处理的群体相比，使用储存化学品的可能性更小。我们的结果表明，在撒哈拉以南非洲推广软粒高产杂交玉米品种的政策应考虑将改善收获后储存作为一项补充干预措施，以增加这些品种的采用率。
