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Extent and management of acid soils for sustainable crop production system in the tropical agroecosystems: a review

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Title Extent and management of acid soils for sustainable crop production system in the tropical agroecosystems: a review
 
Creator Agegnehu, G.
Amede, T.
Erkossa, T.
Yirga, C.
Henry, C.
Tyler, R.
Nosworthy, M. G.
Beyene, S.
Sileshi, G. W.
 
Description Increasing areas of agricultural land in high rainfall areas of Sub-Saharan Africa (SSA), where crop production used to be reliable, are affected by soil acidity. This review focuses on the extent, causes and effect of soil acidity on soil properties and crop yield and its management from the context of SSA. Studies showed that the detrimental effects of soil acidity can be mitigated through liming, integrated acid soil management and the use of acid-tolerant germplasms. Application of lime resulted in yield increments of 34–252% in wheat, barley and tef, 29–53% in faba bean and soybean, and 42–332% in potato in Ethiopia, 111–182% in maize in Kenya, and 45–103% in Mucuna in Nigeria under moderate to severe acid soil conditions. This was accompanied by a corresponding increase in soil pH up to 1.9 units and a decrease in exchangeable acidity and aluminum up to 2.1 cmol kg−1. Use of acid-tolerant crop varieties such as maize expressing superior tolerance to Al toxicity resulted in a yield increase of 51% under low soil pH in Cameroon and Kenya. Overall, soil acidity covering ∼35% of SSA should be reclaimed with lime and integrated acid soil management interventions, which could significantly increase crop yield and enhance the resilience of the tropical agroecosystems.
 
Date 2021-08-31
2021-12-28T04:04:58Z
2021-12-28T04:04:58Z
 
Type Journal Article
 
Identifier Agegnehu, G.; Amede, T.; Erkossa, T.; Yirga, C.; Henry, C.; Tyler, R.; Nosworthy, M. G.; Beyene, S.; Sileshi, G. W. 2021. Extent and management of acid soils for sustainable crop production system in the tropical agroecosystems: a review. Acta Agriculturae Scandinavica, Section B — Soil & Plant Science (TSI). pp.1-18. ISSN 0906-4710 doi: https://dx.doi.org/10.1080/09064710.2021.1954239
0906-4710
https://hdl.handle.net/10568/117258
https://doi.org/10.1080/09064710.2021.1954239
Restoring Degraded Landscapes
 
Language en
 
Rights Copyrighted; all rights reserved
Open Access
 
Format pp.1-18
 
Publisher Informa UK Limited
 
Source Acta Agriculturae Scandinavica, Section B — Soil & Plant Science