Table 3. Total economic benefits of adopting IPM, pollinator supplementation and IPPM in avocado production in Tanzania (‘Million US$).
| Intervention | IPM | Pollinator supplementation | IPPM |
|---|---|---|---|
| Year | PS/TS | PS/TS | PS/TS |
| 2019 | 0 | 0 | 0 |
| 2020 | 0 | 0 | 0 |
| 2021 | 0.0001 | 0.0001 | 0.0002 |
| 2022 | 0.0001 | 0.0002 | 0.0003 |
| 2023 | 0.0003 | 0.0003 | 0.0007 |
| 2024 | 0.0005 | 0.0007 | 0.0013 |
| 2025 | 0.0010 | 0.0012 | 0.0025 |
| 2026 | 0.0018 | 0.0021 | 0.0043 |
| 2027 | 0.0027 | 0.0032 | 0.0065 |
| 2028 | 0.0036 | 0.0043 | 0.0088 |
| 2029 | 0.0043 | 0.0051 | 0.0106 |
| 2030 | 0.0047 | 0.0057 | 0.0118 |
| 2031 | 0.0050 | 0.0061 | 0.0126 |
| 2032 | 0.0053 | 0.0064 | 0.0131 |
| 2033 | 0.0054 | 0.0066 | 0.0136 |
| NPV | 0.0105 | 0.0127 | 0.0260 |
| B/C | 12.40 | 16.57 | 33.94 |
| IRR | 54.9% | 61.1% | 81.3% |
Note: PS, and TS are producer and total surplus respectively; B/C is the benefit over cost, IRR is the internal rate of return. NPV is the net present value. Consumer surplus (CS) is zero equating PS to TS.