Table 3. Estimates of control costs (dollars/hectare) based on phone interviews with invasive plant control companies during the period from July 15 to 21, 2009.
| Company | Control prices | |||||
| Marshfield Forest Service, Inc.1 | $25–$988 | |||||
| ChemPro Services, Inc.1 | $371–$1235 | |||||
| BASF-The Chemical Company1 | $124–$988 | |||||
| Progressive Solutions2 | $25–$62 (1%–5%) | $62–$185 (5%–20%) | $185–$321 (20%–40%) | $321–$494 (40%–60%) | $494–$741 (60%–80%) | $741–$1112 (80%–100%) |
| Superior Forestry Service, Inc.3 | $111–$210 (1%–25%) | $210–$457 (25%–60%) | $457–$1446 (60%–100%) |
1
General price range for controlling all invasive plant species.
2
Price ranges for controlling all invasive plant species depending on percentage of land invaded; an estimated searching cost of 19.77 dollars/ha.
3
Price ranges for controlling Chinese tallow depending on percentage of land invaded.