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  1. 国際農研研究成果
  2. 学術雑誌論文

Impact of effective soil depth on agronomic recommendations for sorghum and its economic viability in Africa

https://jircas.repo.nii.ac.jp/records/2000888
https://jircas.repo.nii.ac.jp/records/2000888
42e877fe-7c63-4d74-9598-7e96c1248318
名前 / ファイル ライセンス アクション
2000888.pdf 2000888 (1.4 MB)
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Item type 国際農研デフォルトアイテムタイプ(フル)(1)
公開日 2025-07-03
タイトル
タイトル Impact of effective soil depth on agronomic recommendations for sorghum and its economic viability in Africa
言語 en
作成者 Ikazaki, Kenta

× Ikazaki, Kenta

ORCID 0000-0001-5460-8570

en Ikazaki, Kenta
ISNI Japan International Research Center for Agricultural Sciences (JIRCAS) 0000000121078171

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Nagumo, Fujio

× Nagumo, Fujio

en Nagumo, Fujio
ISNI Japan International Research Center for Agricultural Sciences (JIRCAS) 0000000121078171

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Simporé, Saïdou

× Simporé, Saïdou

en Simporé, Saïdou

fr ISNI Institut de l’Environnement et de Recherches Agricoles 0000000405709190

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Iseki, Kohtaro

× Iseki, Kohtaro

ORCID 0000-0001-8721-1553

en Iseki, Kohtaro
ISNI Japan International Research Center for Agricultural Sciences (JIRCAS) 0000000121078171

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Barro, Albert

× Barro, Albert

en Barro, Albert

fr ISNI Institut de l’Environnement et de Recherches Agricoles 0000000405709190

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アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利情報
権利情報 © 2025 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
権利情報
権利情報Resource http://creativecommons.org/licenses/by/4.0/
権利情報 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The terms on which this article has been published allow the posting of the Accepted Manuscript in a repository by the author(s) or with their consent.
主題
主題 Agronomic recommendation, effective soil depth, sorghum, sub-Saharan Africa, water shortage
内容記述
内容記述タイプ Abstract
内容記述 Improving sorghum productivity, the second most important upland crop in Africa, is critical to meeting the continent’s rapidly growing food demand. Previous research indicated that limited soil water, especially in soils with an effective soil depth (ESD) of ≤ 50cm, restricts sorghum production under fertilized conditions. This finding suggests that optimal management practices, including fertilizer application rates, planting density, and variety selection, should vary by ESD. However, agronomic recommendations for sorghum in Africa have yet to incorporate ESD considerations. This study assessed the impact of ESD on optimal sorghum management practices and their economic stability amid fluctuating fertilizer prices. Two-year field experiments were conducted on soils with ESDs of 25, 50, and 100cm in the Sudan Savanna, Africa’s largest sorghum-producing region. These ESDs represent three dominant soil types in the region: two types of Plinthosols and Ferric Lixisol. Results showed that the optimal management practices varied by ESD: 37kg N ha-1, 3.1 hills m-2, and Kapelga for 25cm ESD; 74kg N ha-1, 8.3 hills m-2, and Kapelga for 50cm ESD; and 74kg N ha-1, 5.6 hills m-2, and Sariaso14 for 100cm ESD. These practices were economically robust for ESDs of 50 and 100cm but not for 25cm. A random forest regression model identified ESD as the most critical factor for sorghum yield, surpassing rainfall, nitrogen application rate, planting density, and variety. This study highlights the need for ESD-based agronomic recommendations to enhance food security and income stability for African farmers.
言語 en
内容記述
内容記述タイプ Other
内容記述 Soil Science and Plant Nutrition (SSPN) is a peer-reviewed international journal and an official journal of the Japanese Society of Soil Science and Plant Nutrition (JSSSPN) -- description based on journal HP
言語 en
出版者
出版者 Taylor & Francis
日付
日付 2025-06-09
日付タイプ Accepted
言語
言語 eng
資源タイプ
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
資源タイプ journal article
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
関連情報
関連タイプ isIdenticalTo
識別子タイプ DOI
関連識別子 https://doi.org/10.1080/00380768.2025.2522832
収録物識別子
収録物識別子タイプ EISSN
収録物識別子 1747-0765
収録物識別子
収録物識別子タイプ PISSN
収録物識別子 0038-0768
収録物識別子
収録物識別子タイプ NCID
収録物識別子 AA11558204
書誌情報 en : Soil Science and Plant Nutrition

p. 1-12, 発行日 2025-06-26
位置情報
位置情報(自由記述) Burkina Faso
位置情報(自由記述) ブルキナファソ
助成情報
識別子タイプ Crossref Funder
助成機関識別子 https://doi.org/10.13039/501100009472
助成機関名 Japan International Research Center for Agricultural Sciences (JIRCAS)(en)
研究課題番号URI https://www.jircas.go.jp/en/program/program_a/a2
研究課題番号 04a1A2
研究課題名 Development of intensive watershed management models for soil erosion-prone areas in Sub-Saharan Africa(en)
助成情報
識別子タイプ Crossref Funder
助成機関識別子 https://doi.org/10.13039/501100009472
助成機関名 Japan International Research Center for Agricultural Sciences (JIRCAS)(en)
研究課題番号URI https://www.jircas.go.jp/en/program/proa/a6
研究課題番号 05a1A6
研究課題名 Development of sustainable land management under extreme weather conditions in drylands(en)
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