Influences of Meteorological Factors on Maize and Sorghum Yield in Togo, West Africa

Raïfatou Affoh, Haixia Zheng (), Xuebiao Zhang (), Wen Yu and Chunhong Qu
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Raïfatou Affoh: Agricultural Information Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
Haixia Zheng: Agricultural Information Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
Xuebiao Zhang: Agricultural Information Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
Wen Yu: Agricultural Information Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
Chunhong Qu: Agricultural Information Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China

Land, 2022, vol. 12, issue 1, 1-24

Abstract: This paper explores the effect of meteorological factors such as rainfall, temperature, sunshine, wind speed, and relative humidity on the yield of maize ( Zea mays L.) and sorghum ( Sorghum bicolor L.) at different growth stages in Togo’s Plateau, Central, and Savannah regions. For this purpose, data from 1990 to 2019 on weather variables and maize and sorghum yields were used. The study applied Fisher’s meteorological regression and Chebyshev polynomial function. Our findings revealed that rainfall had a more beneficial than detrimental effect on maize and sorghum yield across stages and regions. Contrariwise, temperature influence was as beneficial as detrimental and more significant across all growth stages of maize and sorghum in the Savannah and Plateau regions. Furthermore, the sunshine effect on maize yield was more significant in the Central and Savannah regions, while negative on sorghum yield in all the growth stages in the Central region. Similarly, the wind speed was also beneficial and detrimental to maize and sorghum yields, although it was more significant for sorghum in Plateau and Savannah regions. Lastly, relative air humidity positively and negatively influenced maize and sorghum yields in all the growth stages and regions for maize and the Plateau and Savannah regions for sorghum. Therefore, there is a need for real-time agricultural meteorological information to help farmers plan crop production more efficiently and increase crop yield.

Keywords: meteorological factors; maize; sorghum; yield; growth stage; Chebyshev polynomial (search for similar items in EconPapers)
JEL-codes: Q15 Q2 Q24 Q28 Q5 R14 R52 (search for similar items in EconPapers)
Date: 2022
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