Quick Menu

Upcoming Journals

Journal of Agriculture and Ecology Research International

Journal of Agriculture and Ecology Research International, 2394-1073,Vol.: 14, Issue.: 2


Assessment of Food Crop Production in Relation to Climate Variation in Osun State Southwestern Nigeria


Mudasiru A. Olajire1, Olaniran J. Matthew2*, Opeyemi A. Omotara3 and A. Aderanti1

1Department of Physics, School of Science, Osun State College of Education, Ila-Orangun, Nigeria.

2Institute of Ecology and Environmental Studies, Obafemi Awolowo University, Ile-Ife, Nigeria.

3Department of Agriculture, School of Vocational & Technical Education, Osun State College of Education, Ila-Orangun, Nigeria.


Article Information


(1) Daniele De Wrachien, Department of Agricultural and Environmental Sciences, State University of Milan, Italy.


(1) Linli Cui, Shanghai Institute of Meteorological Science, China.

(2) Mohammed Bello Sokoto, Usmanu Danfodiyo University, Nigeria.

Complete Peer review History: http://www.sciencedomain.org/review-history/24159




This study investigated trends in production of nine majorly cultivated food crops between 1992 and 2016 in Osun State, southwestern Nigeria. It also examined the contribution of the State to the total national food production and impact of climate variations on crop yields. It used secondary crop data collected from both the Federal Ministry of Agriculture and Rural Development (FMARD), Abuja and the United Nations Food and Agriculture Organization (FAO) as well as station observation of rainfall, relative humidity, minimum and maximum temperatures. Annual crop productions were estimated and ratio of the State to national crop cultivated area and that of production were computed using both the FMARD and the FAO datasets. The means, standard deviations, interquartile ranges were computed and trend analysis using Mann–Kendall test was done to assess trends and variability in climatic characteristics and basic components of crop production. Multiple regression and synchronization analyses were carried out to investigate the relationship between the crop yield and the climate. Cassava production was found to be the highest with about 0.9 million metric tons per year. The State highest contribution to the national crop production was 3.3 - 5.3% (cocoyam) and the least 0.03-0.04% (cowpea). Rainfall increased annually by 3.5 mm, minimum and maximum temperatures by 0.083 and 0.033°C while relative humidity decreased by 0.32%. Decrease in yam and rice productions was attributed to a combined effect of reduction in yield (due to climate variation) and cultivated area (due to socio-economic factor). Correlations between climate and yields at p < 0.05 differed among the crop types and 48 to 90% of variations in the yields of tomato, yam, cocoyam and cowpea were strongly accounted for by climatic factors. The findings suggest the drive for irrigation to enhance full utilisation of the State’s potential for yam and rice production and propose pragmatic efforts by governments and relevant stakeholders to assist smallholder farmers towards exploiting larger available land area for agricultural production.


Keywords :

Crop yield and production; climate variations; impacts; southwestern Nigeria.


Full Article - PDF    Page 1-14    Article Metrics


DOI : 10.9734/JAERI/2018/40813

Review History    Comments

Search this site

Advanced Search

Announcement & News

Nature (Impact Factor: 41.6) confirmed high standard of SDI journal and its editors

We are happy to inform that Nature (Impact Factor: 41.6) confirmed high standard of SDI journal and ...

ISI Thomson Reuters selected British Journal of Pharmaceutical Research for Emerging Sources Citation Index

We are delighted to inform that ISI Thomson Reuters selected British Journal of Pharmaceutical Resea...

SCOPUS selected Annual Research & Review in Biology (ARRB)

We are delighted to inform that famous indexing organization SCOPUS (from Elsevier) selected  A...

Index Copernicus Evaluation Result Released

We are delighted to inform that Index Copernicus (a leading indexing organization from Pol...

Journal Repository (JR): Permanent Digital Archiving of SDI journals

SDI is happy to announce that all our journals are now permanently archived in Journal Repository (J...

SDI journal got 35th ranking in Publons

We are delighted to announce (as of 04/01/2016) that British Journal of Medicine and Medical Re...

Growth of SDI and world publication market

As of 2014, total 25,064 journals are competing in World market of journal publication. In 2011, tot...

Science (IF: 31) report confirmed the high standard of SDI journal

As per a recent report (Link) of Science journal (present Impact factor 31), one of our journal (Bri...

SDI introduced Post-publication peer review by its comment section

SDI journals encourage Post-publication peer review by its comment section   Policy details a...

SDI promotes transparent Advanced OPEN peer review

We have migrated to transparent and toughest ‘Advanced OPEN peer review’ system (...


  • No Awards listed.

Browser Compatibility : Mozila firefox, Google Crome and IE 7 & above. Creative Commons License Terms & Condition   |   Privacy Policy   |   Join Us   |   Help   |   Contact Us
© Copyright 2010-2018, SCIENCEDOMAIN international. All rights reserved.