TY  - GEN
AU  - Girraj,K.
TI  - Effects of nitrogen, phosphorus, potash and calcium in various combination and doses on the growth and yield cowpea (Vigna unguiculata) and yield of wheat, Triticum vulgare
KW  - Fertilizer combinations
KW  - Experimentation  crop yield
KW  - Wheats
KW  - Phosphate fertilizer
KW  - Potash fertilizers
KW  - Nitrogen fertilizers
KW  - Cowpeas
ER  -