International Journal of Science and Technology

International Journal of Science and Technology>> Volume 7, Number 7, July 2017

International Journal of Science and Technology


A Descriptive Analysis of Rainfall for Agricultural Planning in Lokoja Local Government Area of Kogi State, Nigeria.

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Author Audu, E.B.
On Pages 850-855
Volume No. 2
Issue No. 12
Issue Date December, 2012
Publishing Date December, 2012
Keywords Rainfall, agricultural planning, onset, cessation, food security and rain days.


Abstract

The ever - increasing anthropogenic activities which have led to global warming, climate variation and consequently, climate change is altering rainfall characteristics / pattern across the globe, Nigeria inclusive. For this reason, this paper seeks to give a descriptive analysis of rainfall in Lokoja Local Government Area (LGA), Kogi State; Nigeria with a view to offering useful suggestions for proper agricultural planning in order to ensure food sufficiency. Daily rainfall of 1981 2010 (30 years) obtained from the Nigerian Meteorological Agency, Oshodi, Lagos, Nigeria is used for this study. The rain days were also obtained from the Nigerian Meteorological Agency, Oshodi, Lagos. Results are presented in tables and subjected to statistical analysis using measures of central tendency such as mean, mean deviation and median; measures of dispersion such as range, variance and standard deviation as well as a measure of relationship (coefficient of variance). The findings indicate that April and October are the onset and cessation months (dates) of rains for the study area. Long term mean annual rainfall is about 1216.83mm, while the mean rain days and long term monthly rainfall stood at 81.8mm and days respectively. The decadal mean rainfall and rain days are1263. 26mm and 81.9days, minimum rainfall was recorded in 1982 (804.5mm), maximum was in 1999 (1767.1mm), range is 962.6mm, variance is 1, 400, 630.35, mean deviation is 35, 288.04, median is 1, 182.85mm, standard deviation is 1, 183.48 while coefficient of variance is 97.26%. These results indicate that the study area is still very favourable to crop farming despite the observed frequent dry spells. It is therefore suggested that crops which can withstand longer days of absence of rainfall should be planted early such as melon. Hybrid crops should be introduced while the use of irrigation should be given an aggressive attention in order to boost crop production, ensure food security and alleviate poverty.

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