Arid
DOI10.1007/s10668-023-03861-2
Intra-seasonal rainfall variability and crop yield in the Upper East Region of Ghana
Adimassu, Zenebe; Mul, Marloes; Owusu, Afua
通讯作者Adimassu, Z
来源期刊ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
ISSN1387-585X
EISSN1573-2975
出版年2023
英文摘要Occurrence of frequent dryspell is affecting agriculture; productivity in the semi-arid areas of West Africa such as northern Ghana. The objective of this study was to analyze the effects of dryspells on rainfed maize (early and late maturing), millet, and sorghum yields in a savanna agro-ecosystem in northern Ghana, and suggest management options for reducing their impacts. Long-term dryspell analyses were carried out using INSTAT + v3.37 on climatic data collected over a 30- to 50-year period. The probabilities of dryspells exceeding 7, 10, 14 and 21 days were calculated for crop types during different physiological growth stages and growing seasons of varying lengths. CROPWAT 8.0 was used to determine effective rainfall, crop water requirement, crop water deficit, and changes in yield. The results showed that 80% of the rains begin between the second week of May and the third week of June in the Upper East Region of Ghana. The result also revealed that more dryspells occurred after the initial growth stage of crops. During mid and late stages of crop growth there was a 50% probability of dryspells greater than seven days for early maturing maize and millet and of > 70% for sorghum. Late maturing maize experienced higher crop water deficit than early maturing maize. The result also showed that significant yield reduction (36% reduction in late maturing maize at both Navrongo and Zuarungu) occurs if planting is done before May 21. Similarly, 25 and 23% yield losses, were observed in sorghum at Navrongo and Zuarungu, respectively. We therefore recommend (i) early maturing crop varieties, (ii) adjusting sowing dates based on seasonal climate information, and (iii) improving water management.
英文关键词CROPWAT model Dryspells Maize Millet Sorghum Sowing date Water management
类型Article ; Early Access
语种英语
收录类别SCI-E
WOS记录号WOS:001070358300003
WOS关键词COMMUNAL IRRIGATION SYSTEMS ; SUB-SAHARAN AFRICA ; CLIMATE-CHANGE ; WEST-AFRICA ; ADAPTATION OPTIONS ; PLANTING DATES ; GROWING-SEASON ; MAIZE YIELDS ; DRY SPELLS ; PRODUCTIVITY
WOS类目Green & Sustainable Science & Technology ; Environmental Sciences
WOS研究方向Science & Technology - Other Topics ; Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/396094
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GB/T 7714
Adimassu, Zenebe,Mul, Marloes,Owusu, Afua. Intra-seasonal rainfall variability and crop yield in the Upper East Region of Ghana[J],2023.
APA Adimassu, Zenebe,Mul, Marloes,&Owusu, Afua.(2023).Intra-seasonal rainfall variability and crop yield in the Upper East Region of Ghana.ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY.
MLA Adimassu, Zenebe,et al."Intra-seasonal rainfall variability and crop yield in the Upper East Region of Ghana".ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY (2023).
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