干旱区生态环境知识资源中心(Arid): Understanding yield-limiting factors for sorghum in semi-arid sub-Saharan Africa: beyond soil nutrient deficiency

Arid

DOI	10.1080/00380768.2023.2279582
	Understanding yield-limiting factors for sorghum in semi-arid sub-Saharan Africa: beyond soil nutrient deficiency
	Ikazaki, Kenta; Nagumo, Fujio; Simpore, Saidou; Barro, Albert
通讯作者	Ikazaki, K
来源期刊	SOIL SCIENCE AND PLANT NUTRITION
ISSN	0038-0768
EISSN	1747-0765
出版年	2024
卷号	70 期号:2 页码:114-122
英文摘要	Even in semi-arid regions of sub-Saharan Africa, low crop yields are often attributed to a lack of soil nutrients and limited use of chemical fertilizers. However, in areas where soils with low effective soil depth are common, water availability may be a more significant factor that limits crop production than a lack of soil nutrients. In Sudan Savanna, the effective soil depths of three dominant soils, namely Pisoplinthic Petric Plinthosols (PT-pt.px), Petric Plinthosols (PT-pt), and Ferric Lixisols (LX-fr), are < 30, 30-50, and similar to 100 cm, respectively. Consequently, a lack of soil water is anticipated for both Plinthosols types. This study investigated the limiting factor in sorghum cultivation for each dominant soil in Sudan Savanna by creating plots with and without irrigation and fertilization. The results indicated that neither rainfall nor irrigation significantly affected sorghum yield under unfertilized conditions in all soil types, suggesting that even in very shallow PT-pt.px, a lack of soil water was not the limiting factor under unfertilized conditions. However, under fertilized conditions, reduced rainfall significantly decreased sorghum yield in PT-pt and PT-pt.px. In conclusion, in addition to the lack of soil nutrients being the limiting factor in sorghum cultivation under unfertilized conditions, regardless of soil type, lack of soil water becomes a limiting factor in soils with an effective soil depth of < 50 cm (e.g., Plinthosols) under fertilized conditions. These findings underscore the importance of knowing the effective soil depth when developing efficient fertilizer application methods to achieve food security in semi-arid regions of sub-Saharan Africa.
英文关键词	Effective soil depth limiting factor Plinthosols sorghum sub-Saharan Africa
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:001105206100001
WOS关键词	GRAIN-SORGHUM ; WATER ; GROWTH ; PRODUCTIVITY ; MANAGEMENT ; FERTILITY ; STRESS
WOS类目	Plant Sciences ; Environmental Sciences ; Soil Science
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology ; Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/405662
推荐引用方式 GB/T 7714	Ikazaki, Kenta,Nagumo, Fujio,Simpore, Saidou,et al. Understanding yield-limiting factors for sorghum in semi-arid sub-Saharan Africa: beyond soil nutrient deficiency[J],2024,70(2):114-122.
APA	Ikazaki, Kenta,Nagumo, Fujio,Simpore, Saidou,&Barro, Albert.(2024).Understanding yield-limiting factors for sorghum in semi-arid sub-Saharan Africa: beyond soil nutrient deficiency.SOIL SCIENCE AND PLANT NUTRITION,70(2),114-122.
MLA	Ikazaki, Kenta,et al."Understanding yield-limiting factors for sorghum in semi-arid sub-Saharan Africa: beyond soil nutrient deficiency".SOIL SCIENCE AND PLANT NUTRITION 70.2(2024):114-122.