The monitoring subgroup of TCCG has formulated plans for trialling adjunct control methods to incorporate with the current methods of digging and injecting glyphosate into plants. These control trials include:
1. Seasonal variations in kill rates
- Injections at different times of the year at pegged sites to determine if weather patterns affect the damage and kill rates.
2. Copper sprays
- Top dressing of copper sulphate on immature plants (in progress – see PDF Cu Sulphate Granules Trial Record Sheet).
- Sprays of different concentrations at sunset of copper sulphate, flowering plants: Pegged sites including a control site.
3. Copper injection
- Copper pellets shot into cactus.
- Copper pipe pushed into cactus.
4. Dose of glyphosate
- Injections of various doses of glyphosate: progressively lower doses than those currently used. Test across seasons. Pegged sites including a control site
- Sprays of different concentrations of copper sulphate: 1st year plants (in progress – see attached PDF Glyphosate Spray Trial Record Sheet)
5. Burying versus burning versus mechanical
6. Outer leaves only versus outer and second down leaves
- Injections on outer leaves only on plants of different maturity.
- Injections on outer leaves and second down row on plants of different maturity.
7. Cochineal scale insect trials
- Seasonal variation.
- Density variation
- Maturity variation
- Site variation.
These field trials would all be monitored and the results reported on this website.