Which is more important to sorghum production systems in the Sudano-Sahelian zone of West Africa: Climate change or improved management practices?
The productivity of smallholder farming systems is held back by poor soil fertility, low input levels and erratic rainfall distribution in the sorghum-based cropping systems of the Sudano-Sahelian zone of West Africa. We assessed the sensitivity of current agricultural practices to climate change and to improved management practices: (i) increased fertilizer application combined with increased plant populations and (ii) use of improved sorghum varieties. We applied the Decision Support Systems for Agro-Technological Transfer (DSSAT) Cropping Systems Model, and the Agricultural Production Systems sIMulator (APSIM), for a multiple-farm assessment (i.e. diverse types of management and soils) in Koutiala (Mali) and Navrongo (Ghana), which are representative sites for West African sorghum production systems. Baseline climate data from observed weather (1980–2009) and future climates from five Global Circulation Models (GCMs: 2040–2069) in two Representative Concentration Pathways (RCP 4.5 and 8.5) were used as inputs for crop models. In Navrongo, under current management, sorghum yields either decreased or increased compared to the baseline, depending on the crop models and the GCMs; changes in management options induced a yield increase of up to 256%. The addition of genetic improvement resulted in further yield increases (24%). In Koutiala, sorghum yield changes for future climates ranged from −38 to +8% assuming current management. Shifting to an improved cultivar had a marginal effect on grain yields, while increased fertilizer rates resulted in grain yield increases ranging of 20% and 153% for DSSAT and APSIM, respectively, assuming the current climate. We conclude that in the Sudano-Sahelian zone of West Africa sorghum, as it is cultivated today, appears moderately vulnerable to climate change, while doubling fertilizer inputs with an adjusted planting density, in the current climate, would more than double yields. However, by exploring farm diversity we established that, under certain conditions, the effect of the future climate might be as important as the effect of management changes in the current climate, hinting at the importance of locally-relevant management practices.
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Biblioteca del CIRAD Francia |
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F08 - Systèmes et modes de culture P40 - Météorologie et climatologie F07 - Façons culturales F04 - Fertilisation Sorghum système de production changement climatique modélisation des cultures bonnes pratiques agricoles conduite de la culture petite exploitation agricole fertilité du sol pratique culturale http://aims.fao.org/aos/agrovoc/c_7244 http://aims.fao.org/aos/agrovoc/c_a175b273 http://aims.fao.org/aos/agrovoc/c_1666 http://aims.fao.org/aos/agrovoc/c_9000024 http://aims.fao.org/aos/agrovoc/c_9088686a http://aims.fao.org/aos/agrovoc/c_16094 http://aims.fao.org/aos/agrovoc/c_7113 http://aims.fao.org/aos/agrovoc/c_7170 http://aims.fao.org/aos/agrovoc/c_2018 http://aims.fao.org/aos/agrovoc/c_32605 http://aims.fao.org/aos/agrovoc/c_8355 F08 - Systèmes et modes de culture P40 - Météorologie et climatologie F07 - Façons culturales F04 - Fertilisation Sorghum système de production changement climatique modélisation des cultures bonnes pratiques agricoles conduite de la culture petite exploitation agricole fertilité du sol pratique culturale http://aims.fao.org/aos/agrovoc/c_7244 http://aims.fao.org/aos/agrovoc/c_a175b273 http://aims.fao.org/aos/agrovoc/c_1666 http://aims.fao.org/aos/agrovoc/c_9000024 http://aims.fao.org/aos/agrovoc/c_9088686a http://aims.fao.org/aos/agrovoc/c_16094 http://aims.fao.org/aos/agrovoc/c_7113 http://aims.fao.org/aos/agrovoc/c_7170 http://aims.fao.org/aos/agrovoc/c_2018 http://aims.fao.org/aos/agrovoc/c_32605 http://aims.fao.org/aos/agrovoc/c_8355 |
spellingShingle |
F08 - Systèmes et modes de culture P40 - Météorologie et climatologie F07 - Façons culturales F04 - Fertilisation Sorghum système de production changement climatique modélisation des cultures bonnes pratiques agricoles conduite de la culture petite exploitation agricole fertilité du sol pratique culturale http://aims.fao.org/aos/agrovoc/c_7244 http://aims.fao.org/aos/agrovoc/c_a175b273 http://aims.fao.org/aos/agrovoc/c_1666 http://aims.fao.org/aos/agrovoc/c_9000024 http://aims.fao.org/aos/agrovoc/c_9088686a http://aims.fao.org/aos/agrovoc/c_16094 http://aims.fao.org/aos/agrovoc/c_7113 http://aims.fao.org/aos/agrovoc/c_7170 http://aims.fao.org/aos/agrovoc/c_2018 http://aims.fao.org/aos/agrovoc/c_32605 http://aims.fao.org/aos/agrovoc/c_8355 F08 - Systèmes et modes de culture P40 - Météorologie et climatologie F07 - Façons culturales F04 - Fertilisation Sorghum système de production changement climatique modélisation des cultures bonnes pratiques agricoles conduite de la culture petite exploitation agricole fertilité du sol pratique culturale http://aims.fao.org/aos/agrovoc/c_7244 http://aims.fao.org/aos/agrovoc/c_a175b273 http://aims.fao.org/aos/agrovoc/c_1666 http://aims.fao.org/aos/agrovoc/c_9000024 http://aims.fao.org/aos/agrovoc/c_9088686a http://aims.fao.org/aos/agrovoc/c_16094 http://aims.fao.org/aos/agrovoc/c_7113 http://aims.fao.org/aos/agrovoc/c_7170 http://aims.fao.org/aos/agrovoc/c_2018 http://aims.fao.org/aos/agrovoc/c_32605 http://aims.fao.org/aos/agrovoc/c_8355 Adam, Myriam MacCarthy, Dilys Sefakor Traoré, Pierre Sibiry Nenkam, Andrée Freduah, Bright Salah Ly, Mouhamed Adiku, Samuel G.K. Which is more important to sorghum production systems in the Sudano-Sahelian zone of West Africa: Climate change or improved management practices? |
description |
The productivity of smallholder farming systems is held back by poor soil fertility, low input levels and erratic rainfall distribution in the sorghum-based cropping systems of the Sudano-Sahelian zone of West Africa. We assessed the sensitivity of current agricultural practices to climate change and to improved management practices: (i) increased fertilizer application combined with increased plant populations and (ii) use of improved sorghum varieties. We applied the Decision Support Systems for Agro-Technological Transfer (DSSAT) Cropping Systems Model, and the Agricultural Production Systems sIMulator (APSIM), for a multiple-farm assessment (i.e. diverse types of management and soils) in Koutiala (Mali) and Navrongo (Ghana), which are representative sites for West African sorghum production systems. Baseline climate data from observed weather (1980–2009) and future climates from five Global Circulation Models (GCMs: 2040–2069) in two Representative Concentration Pathways (RCP 4.5 and 8.5) were used as inputs for crop models. In Navrongo, under current management, sorghum yields either decreased or increased compared to the baseline, depending on the crop models and the GCMs; changes in management options induced a yield increase of up to 256%. The addition of genetic improvement resulted in further yield increases (24%). In Koutiala, sorghum yield changes for future climates ranged from −38 to +8% assuming current management. Shifting to an improved cultivar had a marginal effect on grain yields, while increased fertilizer rates resulted in grain yield increases ranging of 20% and 153% for DSSAT and APSIM, respectively, assuming the current climate. We conclude that in the Sudano-Sahelian zone of West Africa sorghum, as it is cultivated today, appears moderately vulnerable to climate change, while doubling fertilizer inputs with an adjusted planting density, in the current climate, would more than double yields. However, by exploring farm diversity we established that, under certain conditions, the effect of the future climate might be as important as the effect of management changes in the current climate, hinting at the importance of locally-relevant management practices. |
format |
article |
topic_facet |
F08 - Systèmes et modes de culture P40 - Météorologie et climatologie F07 - Façons culturales F04 - Fertilisation Sorghum système de production changement climatique modélisation des cultures bonnes pratiques agricoles conduite de la culture petite exploitation agricole fertilité du sol pratique culturale http://aims.fao.org/aos/agrovoc/c_7244 http://aims.fao.org/aos/agrovoc/c_a175b273 http://aims.fao.org/aos/agrovoc/c_1666 http://aims.fao.org/aos/agrovoc/c_9000024 http://aims.fao.org/aos/agrovoc/c_9088686a http://aims.fao.org/aos/agrovoc/c_16094 http://aims.fao.org/aos/agrovoc/c_7113 http://aims.fao.org/aos/agrovoc/c_7170 http://aims.fao.org/aos/agrovoc/c_2018 http://aims.fao.org/aos/agrovoc/c_32605 http://aims.fao.org/aos/agrovoc/c_8355 |
author |
Adam, Myriam MacCarthy, Dilys Sefakor Traoré, Pierre Sibiry Nenkam, Andrée Freduah, Bright Salah Ly, Mouhamed Adiku, Samuel G.K. |
author_facet |
Adam, Myriam MacCarthy, Dilys Sefakor Traoré, Pierre Sibiry Nenkam, Andrée Freduah, Bright Salah Ly, Mouhamed Adiku, Samuel G.K. |
author_sort |
Adam, Myriam |
title |
Which is more important to sorghum production systems in the Sudano-Sahelian zone of West Africa: Climate change or improved management practices? |
title_short |
Which is more important to sorghum production systems in the Sudano-Sahelian zone of West Africa: Climate change or improved management practices? |
title_full |
Which is more important to sorghum production systems in the Sudano-Sahelian zone of West Africa: Climate change or improved management practices? |
title_fullStr |
Which is more important to sorghum production systems in the Sudano-Sahelian zone of West Africa: Climate change or improved management practices? |
title_full_unstemmed |
Which is more important to sorghum production systems in the Sudano-Sahelian zone of West Africa: Climate change or improved management practices? |
title_sort |
which is more important to sorghum production systems in the sudano-sahelian zone of west africa: climate change or improved management practices? |
url |
http://agritrop.cirad.fr/596530/ http://agritrop.cirad.fr/596530/7/ID596530.pdf |
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dig-cirad-fr-5965302024-01-29T03:02:25Z http://agritrop.cirad.fr/596530/ http://agritrop.cirad.fr/596530/ Which is more important to sorghum production systems in the Sudano-Sahelian zone of West Africa: Climate change or improved management practices? Adam Myriam, MacCarthy Dilys Sefakor, Traoré Pierre Sibiry, Nenkam Andrée, Freduah Bright Salah, Ly Mouhamed, Adiku Samuel G.K.. 2020. Agricultural Systems, 185:102920, 14 p.https://doi.org/10.1016/j.agsy.2020.102920 <https://doi.org/10.1016/j.agsy.2020.102920> Which is more important to sorghum production systems in the Sudano-Sahelian zone of West Africa: Climate change or improved management practices? Adam, Myriam MacCarthy, Dilys Sefakor Traoré, Pierre Sibiry Nenkam, Andrée Freduah, Bright Salah Ly, Mouhamed Adiku, Samuel G.K. eng 2020 Agricultural Systems F08 - Systèmes et modes de culture P40 - Météorologie et climatologie F07 - Façons culturales F04 - Fertilisation Sorghum système de production changement climatique modélisation des cultures bonnes pratiques agricoles conduite de la culture petite exploitation agricole fertilité du sol pratique culturale http://aims.fao.org/aos/agrovoc/c_7244 http://aims.fao.org/aos/agrovoc/c_a175b273 http://aims.fao.org/aos/agrovoc/c_1666 http://aims.fao.org/aos/agrovoc/c_9000024 http://aims.fao.org/aos/agrovoc/c_9088686a http://aims.fao.org/aos/agrovoc/c_16094 http://aims.fao.org/aos/agrovoc/c_7113 http://aims.fao.org/aos/agrovoc/c_7170 http://aims.fao.org/aos/agrovoc/c_2018 Zone soudano-sahélienne Afrique occidentale http://aims.fao.org/aos/agrovoc/c_32605 http://aims.fao.org/aos/agrovoc/c_8355 The productivity of smallholder farming systems is held back by poor soil fertility, low input levels and erratic rainfall distribution in the sorghum-based cropping systems of the Sudano-Sahelian zone of West Africa. We assessed the sensitivity of current agricultural practices to climate change and to improved management practices: (i) increased fertilizer application combined with increased plant populations and (ii) use of improved sorghum varieties. We applied the Decision Support Systems for Agro-Technological Transfer (DSSAT) Cropping Systems Model, and the Agricultural Production Systems sIMulator (APSIM), for a multiple-farm assessment (i.e. diverse types of management and soils) in Koutiala (Mali) and Navrongo (Ghana), which are representative sites for West African sorghum production systems. Baseline climate data from observed weather (1980–2009) and future climates from five Global Circulation Models (GCMs: 2040–2069) in two Representative Concentration Pathways (RCP 4.5 and 8.5) were used as inputs for crop models. In Navrongo, under current management, sorghum yields either decreased or increased compared to the baseline, depending on the crop models and the GCMs; changes in management options induced a yield increase of up to 256%. The addition of genetic improvement resulted in further yield increases (24%). In Koutiala, sorghum yield changes for future climates ranged from −38 to +8% assuming current management. Shifting to an improved cultivar had a marginal effect on grain yields, while increased fertilizer rates resulted in grain yield increases ranging of 20% and 153% for DSSAT and APSIM, respectively, assuming the current climate. We conclude that in the Sudano-Sahelian zone of West Africa sorghum, as it is cultivated today, appears moderately vulnerable to climate change, while doubling fertilizer inputs with an adjusted planting density, in the current climate, would more than double yields. However, by exploring farm diversity we established that, under certain conditions, the effect of the future climate might be as important as the effect of management changes in the current climate, hinting at the importance of locally-relevant management practices. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/acceptedVersion http://agritrop.cirad.fr/596530/7/ID596530.pdf text cc_by_nc info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc/4.0/ https://doi.org/10.1016/j.agsy.2020.102920 10.1016/j.agsy.2020.102920 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.agsy.2020.102920 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1016/j.agsy.2020.102920 |