1. Department of Crop Science, Kebbi State University of Science and Technology, Aliero, Nigeria
2. Department of Crop Protection/Institute for Agricultural Research, Ahmadu Bello University, Zaria, Nigeria
3. Department of Crop Protection/Institute for Agricultural Research, Ahmadu Bello University, Zaria, Nigeria, Department of Horticultural Technology, Federal College of Horticultural Technology, Dadin Kowa, Gombe, Nigeria