1. Aniefiok Effiong Uko,:
Department of Crop Science, Faculty of Agriculture, University of Calabar, P.M.B. 1115, Calabar, Nigeria
2. Emmanuel Bassey Effa:
Department of Crop Science, Faculty of Agriculture, University of Calabar, P.M.B. 1115, Calabar, Nigeria
3. Isong Abraham Isong:
Department of Soil Science, Faculty of Agriculture, University of Calabar, P.M.B. 1115, Calabar, Nigeria
4. Jessica Eno Effiong:
National Biotechnology Development Agency, Lugbe, Airport Road, Abuja, Nigeria