Table 4.
Interaction effects of soil amendments on yield components and yield of maize.
| Compost (kg ha−1) | Urea/NPSB (kg ha−1) | TGW (g) | SY(t ha−1) | AGDB (t ha−1) | GY (t ha−1) | HI (%) |
|---|---|---|---|---|---|---|
| 0 | 0/0 | 216.91f | 4.53f | 5.7g | 1.17h | 19.36 |
| 50/50 | 311.29c | 9.10cd | 12.14e | 3.03f | 24.98 | |
| 100/100 | 326.64bc | 11.07b | 15.90c | 4.83c | 30.45 | |
| 5 | 0/0 | 248.58e | 5.97e | 7.53f | 1.56g | 20.36 |
| 50/50 | 318.29bc | 8.85d | 12.42e | 3.57e | 28.72 | |
| 100/100 | 338.15ab | 11.36b | 16.81b | 5.45b | 32.43 | |
| 10 | 0/0 | 278.41d | 6.09e | 7.82f | 1.73g | 25.58 |
| 50/50 | 323.28bc | 9.77c | 14.17d | 4.40d | 31.06 | |
| 100/100 | 358.60a | 12.55a | 18.62a | 6.07a | 32.57 | |
| F value | 3.32 | 3.20 | 3.03 | 7.50 | 2.80 | |
| P value | 0.036 | 0.041 | 0.048 | 0.001 | 0.061 | |
| LSD (0.05) | 20.70 | 0.78 | 0.86 | 0.25 | 2.72 | |
| CV (%) | 3.96 | 5.13 | 4.02 | 4.10 | 5.76 | |
Means in a column followed by different letters are significantly different at p < 0.05. LSD = least significance difference, CV = coefficient of variation, TGW = thousand grain weight, SY = straw yield, AGDB = above ground dry biomass, GY = grain yield.