Tactics for integrated weed management
Management tactic | Most likely % control (range) | Comments on use |
---|---|---|
Herbicide-tolerant crops | 90 (80–99) | Herbicide-tolerant canola is essential in wild radish infested areas |
Burning residues | 70 (20–90) | In concentrated windrows. Use a hot fire and back-burn into the wind |
Autumn tickle | 45 (15–65) | Follow-up rain needed for better response |
Knockdown (non-selective) herbicides for fallow and pre-sowing control | 80 (70–90) | Add carfentrazone, 2,4-D ester or a Group B herbicide for more reliable control. Late germinations will not be controlled |
Selective post-emergent herbicides | 90 (70–99) | Apply to young and actively-growing weeds. Repeat if necessary to control late-emerging weeds or survivors |
Spray-topping with selective herbicides | 80 (70–95) | Wild radish may regrow if there are late rains. Good for seed-set control |
Wiper technology | 70 (50–80) | Has potential in low-growing pulses |
Silage and hay — crops and pastures | 80 (70–95) | Cut before embryo formation in developing wild radish seed. Graze or spray regrowth |
Renovation crops and pastures — green manuring, brown manuring, mulching and hay freezing | 95 (90–100) | Brown manuring more efficient than green manuring and more profitable. Hay freezing works well and is the most profitable manuring option in most cases |
Grazing — actively managing weeds in pastures | 70 (50–80) | Rotationally graze and use spray-grazing |
Weed seed collection at harvest | 75 (65–85) | Variable results |
Sow weed-free seed | 95 (90-100) | Very important as resistance in wild radish is increasing and introduction via crop seed is increasingly likely |