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Diagnosis of crop secondary and micro-nutrient deficiencies in sub-Saharan Africa

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Title Diagnosis of crop secondary and micro-nutrient deficiencies in sub-Saharan Africa
 
Creator Wortmann, Charles S.
Kaizzi, K.C.
Maman, N.
Cyamweshi, A.
Dicko, M.
Garba, M.
Milner, M.
Senkoro, C.
Tarfa, B.
Tettah, F.
Kibunja, C.
Muntholi, M.
Nalivata, P.
Nkonde, D.
Nabahungu, L.
Ouattara, K.
Serme, I.
 
Subject yields
micronutrients
soil analysis
tropical crops
tropical soils
subsaharan africa
leaf tissue analysis
 
Description Crop production in sub-Saharan Africa has numerous biotic and abiotic constraints, including nutrient deficiencies. Information on crop response to macronutrients is relatively abundant compared with secondary and micronutrients (SMN). Data from 1339 trial replicates of 280 field trials conducted from 2013 to 2016 in 11 countries were analyzed for the diagnosis of SMN deficiencies. The diagnostic data included relative yield response (RYR) and soil and foliar test results. The RYR to application of a combination of Mg, S, Zn, and B (Mg–S–Zn–B) relative to a comparable N–P–K treatment was a > 5% increase for 35% of the legume blocks and 60% of the non-legume blocks. The frequencies of soil test Zn, Cu, and B being below their critical level were 28, 2 and 10% for eastern and southern Africa, respectively, and 55, 58 and 89% for western Africa, while low levels for other SMN were less frequent. The frequency of foliar results indicating low availability were 58% for Zn, 16% for S and less for other SMN. The r2 values for relationships between soil test, foliar test and RYR results were
 
Date 2019-03
2019-11-22T10:34:47Z
2019-11-22T10:34:47Z
 
Type Journal Article
 
Identifier Wortmann, C.S., Kaizzi, K.C., Maman, N., Cyamweshi, A., Dicko, M., Garba, M., ... & Serme, I. (2019). Diagnosis of crop secondary and micro-nutrient deficiencies in sub-Saharan Africa. Nutrient Cycling in Agroecosystems, 113(2), 127-140.
1385-1314
https://hdl.handle.net/10568/105866
https://doi.org/10.1007/s10705-018-09968-7
NATURAL RESOURCE MANAGEMENT
 
Language en
 
Rights Copyrighted; all rights reserved
Limited Access
 
Format 127–140
 
Publisher Springer Science and Business Media LLC
 
Source Nutrient Cycling in Agroecosystems