A - Papers appearing in refereed journals
Haefele, S. M., Mossa, A. W., Gashu, D., Nalivata, P. C., Broadley, M., McGrath, S. P. and Thomas, C. L. 2024. Mehlich 3 as an indicator of grain nutrient concentration for five crops in sub-Saharan Africa. Field Crops Research. 307, p. 109243. https://doi.org/10.1016/j.fcr.2023.109243
Authors | Haefele, S. M., Mossa, A. W., Gashu, D., Nalivata, P. C., Broadley, M., McGrath, S. P. and Thomas, C. L. |
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Abstract | Soil testing for available nutrients is an important tool to determine fertilizer rates, however many standard methods test the availability of a single nutrient only. In contrast, Mehlich 3 (M3) is a multi-element test for predicting crop yield responses to the addition of macro and micro-nutrients. However, the M3 test has rarely been validated against crop nutrient concentrations, which limits its application for dietary improvement studies in sub-Saharan Africa. This study used 1,096 paired soil and crop samples of five crop types: maize, rice, sorghum, teff and wheat, covering a broad range of soil types and soil properties in Ethiopia and Malawi (e.g., pH 4.5 - 8.8; Olsen P <1 - 280 ppm). The samples were selected based on “high” or “low” grain nutrient concentrations, and the respective soil available nutrients were measured with M3 and other extraction tests: CaCl2 (P, K, Mg, Mn), Ca(NO3)2 (K and Mg), Olsen P, sequential extraction (S), and DTPA (Mn, Fe and Zn). |
Keywords | Malnutrition; Micro and macro nutrients; Nutrient deficiencies; Soil fertility evaluation |
Year of Publication | 2024 |
Journal | Field Crops Research |
Journal citation | 307, p. 109243 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.fcr.2023.109243 |
Open access | Published as ‘gold’ (paid) open access |
Funder | Bill and Melinda Gates Foundation |
Biotechnology and Biological Sciences Research Council | |
CGIAR | |
Funder project or code | GeoNutrition |
GeoNutrition - tackling hidden hunger in Sub-Saharan Africa | |
Growing Health [ISP] | |
Output status | Published |
Publication dates | |
Online | 03 Jan 2024 |
Publication process dates | |
Accepted | 25 Dec 2023 |
ISSN | 0378-4290 |
Publisher | Elsevier |
Permalink - https://repository.rothamsted.ac.uk/item/98y01/mehlich-3-as-an-indicator-of-grain-nutrient-concentration-for-five-crops-in-sub-saharan-africa
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