Evaluation of Nigerian agricultural production data

IF 0.4 Q4 AGRICULTURAL ECONOMICS & POLICY African Journal of Agricultural and Resource Economics-AFJARE Pub Date : 2017-06-01 DOI:10.22004/AG.ECON.258606

Patrick L. Hatzenbuehler, P. Abbott, T. Abdoulaye

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引用次数: 6

Abstract

The absence of an agricultural census in Nigeria means that samples for surveys to estimate agricultural production are obtained from a non-comprehensive, non-representative set of farms. Therefore, aggregate production data quality is questioned. The methods employed herein provide a new way to empirically evaluate the quality of agricultural production estimates. Two objective types of data, namely the normalised difference vegetation index (NDVI), a satellite remote-sensing measure of intertemporal vegetation changes, and prices, which reveal supply-use dynamics, are used to analyse the degree to which agricultural production estimates reflect adjustments in growing/ market conditions. Broadly weak relationships were found between the production estimates and these objective measures, but with variations in degree across states. In addition, these two objective measures are more strongly related to each other than either is to production data. The results imply that the inclusion of NDVI and prices in agricultural production estimation models would improve the quality of the Nigerian production estimate.

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尼日利亚农业生产数据评估

尼日利亚没有农业普查，这意味着用于估计农业生产的调查样本是从一组不全面、不具代表性的农场中获得的。因此，总体生产数据的质量受到质疑。本文所采用的方法为农业生产估算质量的实证评价提供了一种新的途径。两种客观类型的数据，即标准化植被差异指数(NDVI)，一种跨期植被变化的卫星遥感测量，以及揭示供应-使用动态的价格，用于分析农业生产估计反映生长/市场条件调整的程度。产量估计与这些客观指标之间的关系普遍较弱，但各州之间的关系有所不同。此外，这两个客观指标彼此之间的相关性比任何一个指标与生产数据的相关性都强。结果表明，将NDVI和价格纳入农业生产估算模型将提高尼日利亚生产估算的质量。

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.