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Productivity of Soybean under Projected Climate Change in a Semi-Arid Region of West Africa: Sensitivity of Current Production System

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Relation http://oar.icrisat.org/12196/
https://www.mdpi.com/2073-4395/12/11/2614
https://doi.org/10.3390/agronomy12112614
 
Title Productivity of Soybean under Projected Climate Change in a
Semi-Arid Region of West Africa: Sensitivity of Current
Production System
 
Creator MacCarthy, D S
Traore, P S
Freduah, B S
Adiku, S G K
Dodor, D E
Kumahor, S K
 
Subject Agriculture
Ghana
Semi-Arid Tropics
Climate Change
 
Description The production of soybean is gaining more attention in West Africa. In light of projected changes in climate, there is a need to assess the potential impacts on yield productivity and variability among farmers. An evaluated GROPGRO module of the Decision Support System for Agro-technological Transfer (DSSAT) was used to simulate soybean productivity under both historical (1980–2009) and projected climate scenarios from multiple general circulation models (GCMs) under two representative concentration pathways (RCPs): 4.5 and 8.5. Agronomic data from 90 farms, as well as multiple soil profile data, were also used for the impact assessment. Climate change leads to a reduction (3% to 13.5% across GCMs and RCPs) in the productivity of soybean in Northern Ghana.
However, elevated atmospheric carbon dioxide has the potential to offset the negative impact, resulting in increased (14.8% to 31.3% across GCMs and RCPs) productivity. The impact of climate change on yield varied widely amongst farms (with relative standard deviation (RSD) ranging between 17% and 35%) and across years (RSD of between 10% and 15%). Diversity in management practices, as
well as differences in soils, explained the heterogeneity in impact among farms. Variability among farms was higher than that among years. The strategic management of cultural practices provides an option to enhance the resilience of soybean productivity among smallholders
 
Publisher MDPI
 
Date 2022-10-24
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights cc_attribution
 
Identifier http://oar.icrisat.org/12196/1/Agronomy_12_01-20_2022.pdf
MacCarthy, D S and Traore, P S and Freduah, B S and Adiku, S G K and Dodor, D E and Kumahor, S K (2022) Productivity of Soybean under Projected Climate Change in a Semi-Arid Region of West Africa: Sensitivity of Current Production System. Agronomy (TSI), 12. 01-20. ISSN 2073-4395