From: Impacts of under-canopy vegetation on stand growth in two pine saw-timber stands, South Africa
Treatment | Method descriptiona |
---|---|
1. Weedfree | All vegetation in treatment plots controlled with glyphosate (N-(phosphonomethyl)glycine) (360 g a.i. L−1 applied at 4 L ha−1). |
2. Weedy | No further control of vegetation, except for the slashing of perennial vegetation to facilitate access prior to the two thinning events. |
3. Retention of all annual and perennial grasses and annual herbaceous broadleaves (herbaceous) | Selective control of all perennial broadleaves through spot application of triclopyr (3,5,6-trichloro-2-pyridinyloxyacetic acid) (480 g a.i. L−1 butoxy ethyl ester applied as a 2% solution) to the cut stumps. |
4. Retention of all perennial broadleaves (woody) | Selective control of all grasses with fluazifop-P-butyl (butyl (2R)-2-[4-[5-(trifluoromethyl)pyridin-2-yl]oxyphenoxy]propanoate) (250 g a.i. L−1 applied at 4 L ha−1). Perennial vegetation slashed prior to the two thinning events to facilitate access. |
5. Operational weed control (operational) | Perennial vegetation slashed prior any pruning or thinning event, with cut surfaces of woody vegetation treated with triclopyr (480 g a.i. L−1 butoxy ethyl ester applied as a 2% solution). |