The Paradigm of Agricultural Efficiency and its Implication on Food Security in Africa: What Does Meta-analysis Reveal?☆
The Paradigm of Agricultural Efficiency and its Implication on Food Security in Africa: What Does Meta-analysis Reveal?☆
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DOI：
10.1016/j.worlddev.2014.07.005
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发表时间：
2014-12
影响因子：
6.9
通讯作者：
Kolawole Ogundari
中科院分区：
文献类型：
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作者：
Kolawole Ogundari
该研究调查了非洲农业效率水平是否一直在提高，以及多年来是什么推动了这些水平的提高，这些研究基于442项前沿研究，使用元回归分析。研究结果表明，研究的平均效率估计值随着主要研究中调查年份的增加而显着降低。此外，在期刊上发表的研究，参数规格和面板数据产生了显着更高的效率估计，而那些专注于粮食作物的效率估计值显着较低。其他结果表明，教育，其次是经验，推广和信贷是非洲农业效率水平的主要驱动力。
The study investigates whether African agricultural efficiency levels have been improving or not and what drives them over the years based on 442 frontier studies using meta-regression analysis. The results show that the mean efficiency estimates from studies decrease significantly as year of survey in the primary study increases. Also studies published in Journals, with parametric specification and with panel data produced significantly higher efficiency estimates, while those with a focus on grain crops reported significantly lower efficiency estimates. Other results show that education, followed by experience, extension, and credit are the major drivers of agricultural efficiency levels in Africa.