Season and variety effects were highly significant (P ≤ 0.01) and surface cover significant (P ≤ 0.05) with least significant difference (LSD) values of 5.0, 4.0 and 4.0 t ha−1, respectively.
Season and variety effects were highly significant (P ≤ 0.01) and surface cover significant (P ≤0.05) with least significant difference (LSD) values of 5.0, 4.0 and 4.0 t ha−1, respectively.