1. Department of Crop Science, Faculty of Life Sciences, Gwanda State University, P.O. Box 30, Filabusi, Zimbabwe
2. Tobacco Classification Department, Tobacco Industry and Marketing Board, Harare, Zimbabwe
3. Crop Science Department, Bindura University of Science Education, Bindura, Zimbabwe
4. Weed Research Unit, Henderson Research Station, P.O. Box 2004, Mazowe, Zimbabwe
5. Tobacco Industry and Marketing Board, Paradise Food Court, 5400 Off Chinhoyi University Campus, Chinhoyi, Zimbabwe
6. Department of Horticulture, Faculty of Agriculture, Women’s University in Africa, Marondera, Zimbabwe