Table 2.
Possible contribution of Buffel, Napier and Rhodes grasses to meet total feed demand (%) under Scenario A and Scenario B, calculated based on the area suitable for individual grass assuming that all land will be used only for monocrop culture production under predicted future conditions, if (A) 15% and (B) 10% of total land is used for pasture. F (LY) = ‘fertilized (business as usual, average yield 5.7 tons per ha)’, F (HY) ‘fertilized (highest reported yield for the species as per Table 1)’.
| (A) Possible contribution from each grass species to feed demand (%) | |||||||
|---|---|---|---|---|---|---|---|
| Scenario | Region | Buffel grass | Napier grass | Rhodes grass | |||
| F (LY) | F (HY) | F (LY) | F (HY) | F (LY) | F (HY) | ||
| Current | Amhara | 25 | 69 | 4 | 23 | 27 | 87 |
| Oromia | 22 | 62 | 2 | 9 | 26 | 83 | |
| Tigray | 32 | 88 | 0 | 0 | 28 | 89 | |
| SNNP | 30 | 85 | 6 | 30 | 31 | 99 | |
| Predicted Scenario A if 15% of total land is used for pasture | |||||||
| Future GISS-E2-R_Cold | Amhara | 29 | 82 | 7 | 36 | 35 | 109 |
| Oromia | 32 | 91 | 8 | 41 | 27 | 86 | |
| Tigray | 32 | 91 | 0 | 0 | 24 | 75 | |
| SNNP | 29 | 80 | 8 | 41 | 28 | 88 | |
| Future_17 GCMs | Amhara | 33 | 93 | 9 | 48 | 36 | 115 |
| Oromia | 33 | 93 | 10 | 50 | 31 | 96 | |
| Tigray | 35 | 98 | 0 | 0 | 31 | 97 | |
| SNNP | 31 | 87 | 11 | 60 | 30 | 95 | |
| Future HadGEM2-ES_hot | Amhara | 29 | 83 | 11 | 57 | 39 | 122 |
| Oromia | 35 | 97 | 11 | 57 | 28 | 90 | |
| Tigray | 37 | 103 | 0 | 0 | 29 | 90 | |
| SNNP | 32 | 89 | 11 | 58 | 27 | 85 | |
| Predicted Scenario B if 15% of total land is used for pasture | |||||||
| Future GISS-E2-R_Cold | Amhara | 19 | 52 | 4 | 23 | 22 | 69 |
| Oromia | 21 | 58 | 5 | 26 | 17 | 55 | |
| Tigray | 20 | 57 | 0 | 0 | 15 | 48 | |
| SNNP | 18 | 51 | 5 | 26 | 18 | 56 | |
| Future_17 GCMs | Amhara | 21 | 59 | 6 | 31 | 23 | 73 |
| Oromia | 21 | 59 | 6 | 32 | 19 | 61 | |
| Tigray | 22 | 62 | 0 | 0 | 19 | 61 | |
| SNNP | 20 | 55 | 7 | 38 | 19 | 60 | |
| Future HadGEM2-ES_hot | Amhara | 19 | 52 | 7 | 36 | 24 | 77 |
| Oromia | 22 | 62 | 7 | 36 | 18 | 57 | |
| Tigray | 23 | 65 | 0 | 0 | 18 | 57 | |
| SNNP | 20 | 56 | 7 | 37 | 17 | 54 | |
| (B) Possible contribution from each grass species to feed demand (%) | |||||||
|---|---|---|---|---|---|---|---|
| Scenario | Region | Buffel grass | Napier grass | Rhodes grass | |||
| F (LY) | F (HY) | F (LY) | F (HY) | F (LY) | F (HY) | ||
| Current | Amhara | 25 | 69 | 4 | 23 | 27 | 87 |
| Oromia | 22 | 62 | 2 | 9 | 26 | 83 | |
| Tigray | 32 | 88 | 0 | 0 | 28 | 89 | |
| SNNP | 30 | 85 | 6 | 30 | 31 | 99 | |
| Predicted Scenario A if 10% of total land is used for pasture | |||||||
| Future GISS-E2-R_Cold | Amhara | 19 | 55 | 5 | 24 | 23 | 73 |
| Oromia | 22 | 61 | 5 | 28 | 18 | 58 | |
| Tigray | 22 | 61 | 0 | 0 | 16 | 50 | |
| SNNP | 19 | 54 | 5 | 27 | 19 | 59 | |
| Future_17 GCMs | Amhara | 22 | 62 | 6 | 32 | 24 | 77 |
| Oromia | 22 | 62 | 6 | 34 | 20 | 64 | |
| Tigray | 23 | 65 | 0 | 0 | 20 | 65 | |
| SNNP | 21 | 58 | 8 | 40 | 20 | 64 | |
| Future HadGEM2-ES_hot | Amhara | 20 | 55 | 7 | 38 | 26 | 81 |
| Oromia | 23 | 65 | 7 | 38 | 19 | 60 | |
| Tigray | 24 | 68 | 0 | 0 | 19 | 60 | |
| SNNP | 21 | 59 | 7 | 39 | 18 | 57 | |
| Predicted scenario B if 10% of total land is used for pasture | |||||||
| Future GISS-E2-R_Cold | Amhara | 12 | 35 | 3 | 15 | 15 | 46 |
| Oromia | 14 | 38 | 3 | 18 | 12 | 36 | |
| Tigray | 14 | 38 | 0 | 0 | 10 | 32 | |
| SNNP | 12 | 34 | 3 | 17 | 12 | 37 | |
| Future_17 GCMs | Amhara | 14 | 39 | 4 | 20 | 15 | 48 |
| Oromia | 14 | 39 | 4 | 21 | 13 | 41 | |
| Tigray | 15 | 41 | 0 | 0 | 13 | 41 | |
| SNNP | 13 | 37 | 5 | 25 | 13 | 40 | |
| Future HadGEM2-ES_hot | Amhara | 12 | 35 | 5 | 24 | 16 | 51 |
| Oromia | 15 | 41 | 5 | 24 | 12 | 38 | |
| Tigray | 15 | 43 | 0 | 0 | 12 | 38 | |
| SNNP | 13 | 37 | 5 | 24 | 11 | 36 | |
All values are presented as ± 28%, based on the mean, min and max yield for each grass species under Scenario A and Scenario B.