1 AIDA, Univ Montpellier, CIRAD, Montpellier, France.
2 CIRAD, UPR Aida, Harare, Zimbabwe.
3 Department of Plant Production Sciences and Technologies, University of Zimbabwe, Harare, Zimbabwe.
4 UWA School of Agriculture and Environment (M087), UWA Institute of Agriculture, The University of Western Australia, Crawley, Western Australia, Australia.
5 IITA, International Institute of Tropical Agriculture, Nairobi, Kenya.
6 Department of Environmental Systems Science, ETH Zurich, Zürich, Switzerland.
7 Centre for Agriculture and the Bioeconomy, Queensland University of Technology, Brisbane, Queensland, Australia.
8 Department of Research and Specialist Services, Fertilizer Farm Feeds and Remedies Institute, Ministry of Lands, Agriculture, Fisheries, Water and Rural Development, Harare, Zimbabwe.
9 International Maize and Wheat Improvement Center (CIMMYT), Harare, Zimbabwe.