Article abstract

Journal of Agricultural and Crop Research

Research Article | Published July 2020 | Volume 8, Issue 7 pp. 140-146.

doi: https://doi.org/10.33495/jacr_v8i7.20.116

 

Effect of heat stress on soil fertility and sowing date on yield components of sorghum in the Sudanian agro-ecological zone of Burkina Faso

 



 

 

Pane Jeanne d’Arc Coulibaly1*

Daniel Okae-Anti2

Badiori Ouattara1

Jacques Sawadogo1

Michel Papaoba Sedogo1

 

Email Author
Tel: +22671530607, +22677729799

 

1.Tentre National de la Recherche Scientifique et Technologique, Institute de l’Environment et de Recherches Agricoles (CNRST/INERA), Ouagadougou, Burkina Faso.

2. University of Cape Coast, Ghana.


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Citation: d’Arc Coulibaly PJ, Okae-Anti D, Ouattara B, Sawadogo J, Sedogo MP (2020). Effect of heat stress on soil fertility and sowing date on yield components of sorghum in the Sudanian agro-ecological zone of Burkina Faso. J. Agric. Crop Res. 8(7):140-146.

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 Abstract 


Productivity of Sorghum has declined in recent years because of climate change. This study aimed to identify the impact of heat stress on soil fertility and sorghum yields and yield components. We conducted this study in Burkina Faso in 2014 under three sowing dates: 17 March (higher temperature: 41.1/23.9°C), 05 July (optimum temperature: 38.1/19.7°C) and 20 October (lower temperature: 31.08/21.8 °C). The study used a randomized split-plot design with four replications under irrigation, N fertilization and two sorghum varieties. The results revealed that cropping sorghum in March led to 46.36 and 68.26% of grain yield reduction compared to grain yields from July and October respectively. Grain yield obtained in March is negligible compared with the potential yields of Kapelga (2500 kg ha-1) and Sariaso 14 (5000 kg ha-1). In this experiment, heat stress decreased grain yield with a higher degree than biomass as a result of which harvest index decreased up to 81.82 and 90.71% compared with the experiments conducted in July and October respectively. This temperature of 41.1/23.9°C significantly decreased content of major nutrients in the soil. Therefore, cropping sorghum in hot dryer condition would not be possible for achieving food security. Growing Sorghum within October might be a solution.

Keywords  Burkina Faso   climate change   heat stress   sorghum yields   soil fertility  

 

 

Copyright © 2020 Author(s) retain the copyright of this article.

This article is published under the terms of the Creative Commons Attribution License 4.0

 

 

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