From: A survey of herbicide use and a review of environmental fate in New Zealand planted forests
Region | Application method | Quantity of herbicide used | Spot diameter (m)# | ||
---|---|---|---|---|---|
Aerial | Spot | terbuthylazine | hexazinone | ||
 | (% area) | (% area) | (kg ha-1) | (kg ha-1) |  |
Northland | 50 | 50 | 7.0 | 1.8 | 2.0 |
Bay of Plenty | 0 | 100 | 7.2 | 1.8 | 1.8 |
Taupo | 100 | 0 | 6.8 | 1.7 | - |
Gisborne | 100 | 0 | 6.0 | 1.5 | - |
Hawkes Bay | 50 | 50 | 7.0 | 1.8 | 1.4 |
Hawkes Bay | 0 | 100 | 6.0 | 1.5 | 1.3 |
Nelson | 40 | 60 | 6.0 | 1.5 | 1.5 |
Nelson | 0 | 100 | 8.0 | 2.0 | 1.8 |
Nelson | 0 | 100 | 9.2 | 2.3 | 2.0 |
Marlborough | 20 | 80 | 8.0 | 2.0 | 2.0 |
Canterbury | 0 | 100 | 6.0 | 1.5 | 2.0 |
Canterbury | 94 | 6 | 7.0 | 1.8 | - |
Southland | 70 | 30 | 8.0 | 2.0 | 1.4 |
Average | 42 | 57 | 7.0 | 1.8 | 1.7 |