Table 4.
Grain legume response to P application and benefit cost ratios of P application to grain legumes in the three northern Regions of Ghana
| Region | Response to P (kg ha–1 kg–1 P) | Revenue (USD, $) from kg of P applied† | Cost of kg P applied (USD, $)‡ | Cost/benefit ratio | ||
|---|---|---|---|---|---|---|
| 2015 | 2016 | Mean | ||||
| Cowpea | ||||||
| Northern | 11.93 | – | 11.93 | 7.64 | 3.45 | 2.21 |
| Upper East | 8.17 | – | 8.17 | 5.23 | 3.45 | 1.52 |
| Upper West | 9.47 | – | 9.47 | 6.06 | 3.45 | 1.76 |
| Peanut | ||||||
| Northern | 36.00 | 38.57 | 23.67 | 8.05 | 3.45 | 2.33 |
| Upper East | 0 | 6.53 | 3.27 | 1.11 | 3.45 | 0.32 |
| Upper West | 41.87 | 9.63 | 25.75 | 8.76 | 3.45 | 2.54 |
| Soybean | ||||||
| Northern | 10.03 | 12.4 | 11.22 | 3.81 | 3.45 | 1.11 |
| Upper East | 10.23 | 15.6 | 12.92 | 4.39 | 3.45 | 1.27 |
| Upper West | 19.33 | 10.43 | 14.88 | 5.06 | 3.45 | 1.47 |
†
Prices of Cowpea grains, peanut pods and soybean grains are estimated at $0.64, $0.34, and $0.34 kg–1, respectively.
‡
Includes cost of labor for fertilizer application of $0.95 kg–1 P.