Summary
This dataset paper from the GeoNutrition project presents primary data on 29 mineral micronutrients in staple cereal grains alongside 84 soil chemistry properties from surveys across three regions of Ethiopia and nationally in Malawi. The work provides a geospatially-resolved characterisation of micronutrient variation in crops and their relationship to soil properties, released according to FAIR principles to facilitate further investigation of factors underlying agricultural and nutritional outcomes.
UK applicability
The findings are geographically specific to sub-Saharan African agroecosystems and soil conditions; direct application to UK cereal production would require additional characterisation of UK soil-crop relationships. However, the methodological approach to mapping crop micronutrient status and soil-nutrition linkages may inform UK research on crop nutrient density and soil health assessment.
Key measures
Micronutrient concentrations in grain (measured by ICP-MS); soil pH; total soil nitrogen and carbon; soil organic carbon; cation exchange capacity; exchangeable cations; sequential extraction of sulfur and selenium; available phosphate; DTPA-extractable trace elements; Ca(NO₃)₂ and CaCl₂-extractable trace elements; isotopically exchangeable zinc
Outcomes reported
The study measured concentrations of 29 mineral micronutrients in cereal grains and up to 84 soil chemistry properties from geographically distributed surveys in Ethiopia and Malawi. The dataset characterises geospatial variation in crop micronutrient status and associated soil factors to support investigation of agriculture-nutrition linkages.
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