Van Campenhout Bjorn, Vandevelde Senne, Walukano Wilberforce, Van Asten Piet
Development Strategy and Governance Division, International Food Policy Research Institute (IFPRI), Kampala, Uganda.
LICOS Centre for Institutions and Economic Performance, KU Leuven, Leuven, Belgium.
PLoS One. 2017 Jan 25;12(1):e0169557. doi: 10.1371/journal.pone.0169557. eCollection 2017.
To feed a growing population, agricultural productivity needs to increase dramatically. Agricultural extension information, with its public, non-rival nature, is generally undersupplied, and public provision remains challenging. In this study, simple agricultural extension video messages, delivered through Android tablets, were tested in the field to determine if they increased farmers' knowledge of recommended practices on (i) potato seed selection and (ii) seed storage and handling among a sample of potato farmers in southwestern Uganda. Using a field experiment with ex ante matching in a factorial design, it was established that showing agricultural extension videos significantly increased farmers' knowledge. However, results suggested impact pathways that went beyond simply replicating what was shown in the video. Video messages may have triggered a process of abstraction, whereby farmers applied insights gained in one context to a different context.
为了养活不断增长的人口，农业生产力需要大幅提高。农业推广信息具有公共、非竞争性的特点，通常供应不足，公共提供仍然具有挑战性。在本研究中，通过安卓平板电脑发送的简单农业推广视频信息在实地进行了测试，以确定它们是否能提高乌干达西南部部分马铃薯种植农户对以下两方面推荐做法的了解：（i）马铃薯种子选择，以及（ii）种子储存和处理。采用析因设计中的事前匹配实地试验，结果表明播放农业推广视频显著提高了农户的知识水平。然而，结果显示影响途径不仅仅是简单复制视频中展示的内容。视频信息可能引发了一个抽象化过程，即农户将在一种情境中获得的见解应用到不同情境中。
