1. Department of Crop Science and Horticulture, Sokoine University of Agriculture, Morogoro, Tanzania
2. Department of Agriculture, Irrigation and Cooperatives, President’s Office Regional Administration and Local Government (PO RALG), Nzega Town Council, Tabora, Tanzania
3. Plant Protection Division, Tropical Pesticides Research Institute, Arusha, Tanzania
4. Department of Plant Agriculture, University of Guelph, Guelph, ON, Canada