1. Marondera University of Agricultural Sciences & Technology, Crop Science Department, P.O. Box 35, Marondera, Zimbabwe
2. University of Zimbabwe, Department of Plant Production Sciences and Technologies, P.O. Box MP 167 Mt Pleasant, Harare, Zimbabwe
3. Faculty of Agricultural Sciences, Department of Agricultural Management, Zimbabwe Open University, Number 15 and 16 Hospital Road, Hwange, Zimbabwe
4. Chinhoyi University of Technology, Department of Crop Science and Post-Harvest Technology, P. Bag 7724, Chinhoyi, Zimbabwe