Spatial–Temporal Analysis of Impacts of Climate Variability on Maize Yield in Kenya

Renish Awuor Ondiek, Mohamed Saber () and Mohammed Abdel-Fattah
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Renish Awuor Ondiek: Pan African University Institute for Water and Energy Sciences Including Climate Change (PAUWES), University of Tlemcen, B.P. 119, Tlemcen 13000, Algeria
Mohamed Saber: Disaster Prevention Research Institute, Kyoto University, Goka-sho, Uji City 611-0011, Japan
Mohammed Abdel-Fattah: Civil Engineering and Quantity Surveying Department, Military Technological College, P.O. Box 262, Muscat 111, Oman

Agriculture, 2024, vol. 14, issue 8, 1-20

Abstract: This study examined the spatial temporal impacts of climate variability on maize yield in Kenya. The maize yield data were obtained from the Kenya Maize Yield Database while climatic variable data were obtained from the Climatic Research Unit gridded Time Series (CRU TS) with a spatial resolution of 0.5° × 0.5°. The non-parametric Mann–Kendall and Sen’s slope tests showed no trend in the data for maximum temperature, minimum temperature and precipitation. The spatial maps patterns highlight the rampancy of wetter areas in the Lake Victoria basin and Highlands East of Rift Valley compared to other regions. Additionally, there is a decreasing trend in the spatial distribution of precipitation in wetter areas and an increasing trend in maximum temperature in dry areas, albeit not statistically significant. Spearman’s rank correlation test showed a strong positive correlation between maize yield and the climatic parameters for the Lake Victoria basin, Highlands East of Rift Valley, Coastal Strip and North Western Regions. The findings suggest that climate variability has a significant impact on maize yield for four out of six climatological zones. We recommend adoption of policies and frameworks that will augment adaptive capacity and build resilience to climatic changes.

Keywords: climate variability; maize yield; Kenya (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2024
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