Nwajei, Sunday Ebonka, Department of Crop Science, Ambrose Alli University, Ekpoma, Nigeria., Nigeria

• Sustainability, Agri, Food and Environmental Research Vol. 9 No. 4 (2021) - Research Articles
  Effects of continous cropping and NPK fertilizer on growth and yield of cowpea (Vigna unguiculata (L) Walp) grown on soils from different management systems
  Abstract  PDF