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Rainfall Variability and its Effect on Yield of Rice in Nigeria

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Abstract:

Nigerian rice production is mainly rain-fed and naturally prone to vagaries of rainfall variability. The objective of this study was to determine the probable effect of rainfall variability on average yield of rice in Nigeria during a 22-year period (1992-2013). The mean annual rainfall data from major rice producing states and national average rice yields were analyzed using descriptive statistics and regression models. Results of the analysis revealed a significant variation in mean annual rainfall across vegetation grouping in a descending order from swamp forest to Sudan savanna. Mean rainfall was adequate for rice production in all vegetation grouping except Sudan savanna where rainfall was less than the prescribed minimum quantity for rice production. Rainfall was positively related to yield of rice in all vegetation grouping except Sudan savanna but relationship was not statistically significant at 5% level. It was concluded that annual rainfall variability had statistically negligible effect on national average rice yield. It was recommended that the cultivation of rice should go along with farming practices that aimed at mitigating adverse effects of rainfall variability on the yield of rice especially in the Sudan savanna.

Info:

Periodical:
International Letters of Natural Sciences (Volume 49)
Pages:
63-68
Citation:
S. A. Tiamiyu et al., "Rainfall Variability and its Effect on Yield of Rice in Nigeria", International Letters of Natural Sciences, Vol. 49, pp. 63-68, 2015
Online since:
November 2015
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References:

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