Does crop diversification reduce downside risk of external maize yield-enhancing technology? Evidence from Ethiopia

IF 0.4 Q4 AGRICULTURAL ECONOMICS & POLICY

African Journal of Agricultural and Resource Economics-AFJARE Pub Date : 2020-06-30 DOI:10.53936/afjare.2020.15(2).07

M. Jaleta, P. Marenya, B. Beshir, O. Erenstein

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引用次数: 4

Abstract

Unexpectedly lower yield outcomes (downside risks) challenge farmers’ use of external inputs that can enhance crop productivity. Using household-level panel data collected from Ethiopia, we estimated the effects of crop diversification through maize-legume intercropping/rotation on maize yield distribution and downside risk. Results from endogenous switching regression models and quintile moment approaches show that plots with maize-legume intercropping/rotation have the highest average maize yield. Such crop diversification reduces the downside risk in maize yield more when applied to plots receiving external inputs. The results imply that, in addition to the technical support around external input use in smallholder maize production, Ethiopia’s agricultural extension may also need to give due emphasis to both spatial and temporal crop diversification practices. This could enhance crop productivity further and reduce the potential downside risks typically hampering smallholders’ external input use in maize production.

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作物多样化是否降低了外部玉米增产技术的下行风险?来自埃塞俄比亚的证据

出乎意料的低产量结果（下行风险）挑战了农民使用可以提高作物生产力的外部投入。利用从埃塞俄比亚收集的家庭层面的面板数据，我们估计了通过玉米-豆类间作/轮作实现作物多样化对玉米产量分布和下行风险的影响。内生转换回归模型和五分位数矩方法的结果表明，玉米-豆类间作/轮作小区的玉米平均产量最高。当应用于接受外部投入的地块时，这种作物多样化可以更多地降低玉米产量的下行风险。研究结果表明，除了围绕小农户玉米生产的外部投入使用提供技术支持外，埃塞俄比亚的农业推广可能还需要适当重视作物的空间和时间多样化做法。这可以进一步提高作物生产力，减少通常阻碍小农户在玉米生产中使用外部投入的潜在下行风险。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

African Journal of Agricultural and Resource Economics-AFJARE AGRICULTURAL ECONOMICS & POLICY-

CiteScore

1.20

自引率

16.70%

发文量

期刊介绍： The African Journal of Agricultural and Resource Economics (AfJARE)/Journal Africain d’Economie Agricole et des Ressources (JAEAR) is a publication of the African Association of Agricultural Economists (AAAE). The journal publishes original research about how African agriculture interacts with local and global economic systems and policy regimes in its impacts upon people. The scope of the journal covers the roles of markets, technology, policy, institutions and the natural environment in shaping the lives of well being of Africans engaged in agricultural activities. The journal strives to nurture and enhance the capacity of African professionals to conduct and publish scientific research and provides a venue for communicating and disseminating their findings. Multi-disciplinary, problem-oriented articles are encouraged. Submissions may deal with teaching, research extension, consulting, advising, entrepreneurship and administration. The Chief Editors and Editorial Board, under the general direction of the AAAE President, Executive Committee and Council are charged with implementing Journal policy to serve members of AAAE. The main section of the journal publishes technical research articles while a small section is devoted to publishing brief notes with important policy content and book reviews. The journal is a quarterly publication.