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Maize-grain zinc and iron concentrations as influenced by agronomic management and biophysical factors: a meta-analysis

This dataset supports a global meta-analysis that assesses how agronomic practices and soil characteristics influence zinc (Zn) and iron (Fe) levels in maize grain. Drawing on 5,874 data points from 138 studies (for Zn) and 3,187 points from 65 studies (for Fe) across multiple countries, the analysis quantifies the probability of maize grain meeting nutritional benchmarks and evaluates the effect of combined Zn/Fe applications, especially with NPK fertilizer and organic treatments, on both nutrient concentrations and grain yield. Key biophysical drivers include soil organic matter, pH, and available Zn levels; the study provides a data-rich foundation for agronomic biofortification strategies.

Citation

Data and Resources

Additional Info

Field Value
Creator Job Kihara
Creator Affiliation International Center for Tropical Agriculture (CIAT)
Creator email J.Kihara@CGIAR.ORG
Creator ID Type ORCID
Creator ID 0000-0002-4394-9553
Subject Vocab (AGROVOC/GACS/CAB) Maize,Zinc,Iron,Micronutrients,Soil Fertility,Fertilizers,Organic Fertilizers,Nutrient Availability,Nutrient Uptake,Agronomic Practices,Crop Yield,Food Security,Biofortification,Meta-Analysis,Sustainable Agriculture
Subject(s) Agronomic Biofortification,Zinc In Maize Grain,Iron In Maize Grain,Maize Nutrition,Soil Fertility,Fertilizer Management,Organic Amendments,Micronutrient Uptake,Meta-Analysis,Sustainable Agriculture,Nutrient-Dense Crops,Soil Properties,Global Food Security,CGIAR Excellence In Agronomy Initiative
Publisher International Institute of Topical Agriculture
Contributor Person 1 Dominic Mwanzia Mutambu
Contributor Person 1 Affiliation International Center for Tropical Agriculture (CIAT)
Contributor Person 1 email dominic.mutambu@usys.ethz.ch
Contributor Person 2 Michael Kinyua
Contributor Person 2 Affiliation International Center for Tropical Agriculture (CIAT)
Contributor Person 2 email M.Kinyua@cgiar.org
Contributor Person 3 Gudeta W. Sileshi
Contributor Person 3 Affiliation Department of Plant Biology and Biodiversity Management, Addis Ababa University
Contributor Person 3 email sileshigw@gmail.com
Contributor Person 4 Kalimuthu Senthilkumar
Contributor Person 4 Affiliation Africa Rice Center (AfricaRice)
Contributor Person 4 email K.Senthilkumar@cgiar.org
Contributor Person 5 Siyabusa Mkhulani
Contributor Person 5 Affiliation International Institute of Tropical Agriculture (IITA)
Contributor Person 5 email S.Mkuhlani@cgiar.org
Contributor Person 6 Lydiah Nturibi
Contributor Person 6 Affiliation International Institute of Tropical Agriculture (IITA)
Contributor Person 6 email L.Nturibi@cgiar.org
Contributor Person 7 Mina Devkota
Contributor Person 7 Affiliation International Center for Agricultural Research in the Dry Areas (ICARDA)
Contributor Person 7 email M.Devkota@cgiar.org
Contributor Person 8 Kazuki Saito
Contributor Person 8 Affiliation International Rice Research Institute (IRRI)
Contributor Person 8 email K.Saito@cgiar.org
Contributor Person 9 Peter Bolo
Contributor Person 9 Affiliation International Center for Tropical Agriculture (CIAT)
Contributor Person 9 email P.Bolo@cgiar.org
Contributor Person 10 Andrew Sila
Contributor Person 10 Affiliation International Center for Tropical Agriculture (CIAT)
Contributor Person 10 email
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Contributor Project Lead Organisation Center International Institute of Tropical Agriculture (IITA)
Contributor Project Lead Center International Institute of Topical Agriculture
Contributor Initiative/CRP Excellence in Agronomy
Contributor Partner
Contributor Donor Gates Foundation
Contributor Project Excellence in Agronomy for Sustainable Intensification and Climate Change Adaptation (EiA) 
Project ID PJ-RA3626
Contributor Affiliation
Open-Access status Open Access
Production Date 2024-08-05
Embargo End Date
Content Type Dataset
File Format csv
Identifier Type DOI
Identifier https://doi.org/10.25502/w6w2-6p25/d
Identifier Citation
Source
Language English
Relation
Agroecological Zone
Coverage Region
Coverage country Argentina,Bangladesh,Bosnia and Herzegovina,Brazil,China,Egypt,Ghana,India,Iran,Kenya,Libya,Malawi,Malaysia,Mali,Niger,Nigeria,Pakistan,Poland,Serbia,Tanzania,USA,Zambia,Zimbabwe
Coverage Admin Unit
Coverage Y (Latitude) -34.99650, 24.47693, 43.91674, -22.27528, 35.00007, 26.25405, 8.03003, 22.35111, 32.64753, 1.44197, 26.82345, -13.26872, 4.56938, 16.37004, 17.73562, 9.60004, 30.33084, 52.21593, 44.15341, -6.52471, 39.78373, -14.51891, -18.45550
Coverage X (Longitude) -64.96728, 90.29344, 17.54821, -42.41941, 104.99993, 29.26755, -1.08003, 78.66774, 54.56435, 38.43140, 18.12367, 33.93020, 102.26568, -2.29002, 9.32384, 7.99997, 71.24750, 19.13442, 20.55144, 35.78784, -100.44588, 27.55899, 29.74684
Coverage Start Date 2024
Coverage End Date 2025
Contact Lydiah Nturibi; International Institute of Topical Agriculture
Contact Email L.Nturibi@cgiar.org
Restriction CC-BY 4.0
Email Permission None
Rights CC-BY 4.0