| Inoculation protocol | |
Cowpea varieties | Non-inoculated | Inoculated |
IT82E-16 | 7.426 | 4.756 |
IT99K-7-21-2-2XIT82E-16 | 6.658 | 5.772 |
Mkanakaufiti | 11.062 | 8.506 |
Sudan 1 | 6.242 | 9.524 |
LSD 5% | 3.298 |