Assessing the vulnerability of sorghum to changing climate conditions in West Africa semi-arid tropics. [P39]

Akinseye Folorunso M., Diancoumba Madina, Adam Myriam, Traoré Pierre Sibiry, Agele Samuel O., Whitbread Anthony M.. 2015. Assessing the vulnerability of sorghum to changing climate conditions in West Africa semi-arid tropics. [P39]. In : Building tomorrow’s research agenda and bridging the science-policy gap. CIRAD, INRA, IRD, Agropolis International, Wageningen UR, CGIAR, UCDAVIS, FAO, Agreenium, GFAR. Montpellier : CIRAD, Résumé, 128. Climate-Smart Agriculture 2015 : Global Science Conference. 3, Montpellier, France, 16 Mars 2015/18 Mars 2015.

Résumé : Rainfed agriculture would remain the dominant source of staple food production and the livelihood foundation of the majority of the rural populace in semi-arid West Africa. Prolonged dry spells during the growing season often lead to significant crop yield losses, a situation that is expected to be exacerbated by climate change. In this study, impacts of climate change on the sorghum production system in West Africa semi-arid tropics was analysed using the most accessible process-based crop models (DSSAT, APSIM and Samara) and simulated at six stations under rainfed conditions. The mid-century future climate predictions by 2069 indicate the productivity of grain sorghum would be diversely affected due to the differences in the GCMs projections in terms of temperature and rainfall. On the average, climate change is projected to reduce low photoperiod sensitivity genotype (CSM63E) grain yield to the tune of 13%, and by 7% for both medium photoperiod sensitivity genotype (CSM335) and high photoperiod genotype (IS15401) across the selected sites. Results also indicate that adaptation strategies like longer grain filling period and sowing date reduced the vulnerability on both the medium and high photoperiod sensitivity genotypes (CSM335 and IS15401) compared to low photoperiod sensitivity genotype (CSM63E). As obtained from the study, proper genotypic calibrations and evaluations of crop models could be used to explain the expected outcomes of future climate conditions on the diverse photoperiod sensitivity sorghum genotypes available across semi-arid area. Also, these results would serve as reliable tools towards the understanding of future climate change and adaptation options to be implemented, which could be shared among farmers and development partners interested in food security issues in West Africa semi-arid zone. (Texte intégral)

Classification Agris : F01 - Culture des plantes
P40 - Météorologie et climatologie

Auteurs et affiliations

• Akinseye Folorunso M., ICRISAT (MLI)
• Diancoumba Madina, ICRISAT (MLI)
• Adam Myriam, CIRAD-BIOS-UMR AGAP (FRA) ORCID: 0000-0002-8873-6762
• Traoré Pierre Sibiry, ICRISAT (MLI)
• Agele Samuel O., Federal University of Technology (NGA)
• Whitbread Anthony M., ICRISAT (TZA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/576756/)

Métriques

[ Page générée et mise en cache le 2020-07-23 ]