摘要：The dataset comprises primary data for the concentration of 29 mineral micronutrients in cereal grains and up to 84 soil chemistry properties from GeoNutrition project surveys in Ethiopia and Malawi . The work provided insights on geospatial variation in the micronutrient concentration in staple crops, and the potential infuencing soil factors . In Ethiopia, sampling was conducted in Amhara, Oromia, and Tigray regions, during the late-2017 and late-2018 harvest seasons. In Malawi, national-scale sampling was conducted during the April–June 2018 harvest season . The concentrations of micronutrients in grain were measured using inductively coupled plasma mass spectrometry (ICP-MS) . Soil chemistry properties reported include soil pH; total soil nitrogen; total soil carbon (C); soil organic C; efective cation exchange capacity and exchangeable cations; a three-step sequential extraction scheme for the fractionation of sulfur and selenium; available phosphate; diethylenetriaminepentaacetic acid (DTPA)- extractable trace elements; extractable trace elements using 0.01 M Ca(NO3)2 and 0.01 M CaCl2; and isotopically exchangeable Zn . These data are reported here according to FAIR data principles to enable users to further explore agriculture-nutrition linkages .
