Table 3.
Effect of location (region, R) and treatment (T) (control [no inputs and planted by researcher]), Farmers’ practice (no input and planted by farmer)), I (rhizobium inoculants and planted by researcher), triple super phosphate (TSP) fertilizer (P) (planted by researcher) and P+I (planted by researcher) on grain yield of soybean in on-farm demonstrations in northern Ghana in 2015 and 2016.
| Region | No. demonstrations | Farmers practice | Control | I | TSP (P) | +I + P | Mean |
|---|---|---|---|---|---|---|---|
| Grain yield 2015 cropping season (tons ha–1) | |||||||
| Northern | 10 | 0.853 | 0.982 | 1.257 | 1.283 | 1.356 | 1.150b |
| Upper East | 6 | 1.258 | 1.722 | 1.688 | 2.029 | 1.993 | 1.738a |
| Upper West | 3 | 0.532 | 0.465 | 0.695 | 1.042 | 0.785 | 0.709c |
| Mean | 19 | 0.927a† | 1.130ab | 1.301bc | 1.477c | 1.463c | |
| LSD (0.05);T = 0.2605, R = 0.2686 and T × R = 0.6338 | |||||||
| Grain yield 2016 cropping season (tons ha–1) | |||||||
| Northern | 18 | 1.546 | 1.485 | 1.695 | 1.857 | 2.139 | 1.745a |
| Upper East | 14 | 0.644 | 0.786 | 0.976 | 1.254 | 1.398 | 1.011b |
| Upper West | 8 | 0.468 | 0.360 | 0.432 | 0.673 | 0.739 | 0.534c |
| Mean | 40 | 0.886e | 0.877d | 1.034c | 1.261b | 1.425a | |
| LSD (0.05); T = 0.1794, R = 0.1695 and T × R = 0.4011 | |||||||
†
Means in the same column and row followed by the same letter are not significantly different (p ≤ 0.05).