A five-year, GRDC-supported project by QDPI scientists from Kingaroy has shown growers can cut production costs by using low rates of herbicide on young weeds and using more residual herbicides. Senior agronomist Jim Barnes said the evidence came from 65 demonstrations and research crop trials, as well as the monitoring of 45 farmer trials. These had shown that, by using more residual herbicides, farmers could have weed-free crops at harvest and save by not using a fallow herbicide spray - which could cost up to $30 per hectare - between crops. The project also showed farmers a long-term impact in the cost of weed control could be achieved by stopping weeds seeding, reducing chemical costs in the long term. Mr Barnes said the project had improved farmers' weed management expertise, updated spray technology knowledge and introduced a range of residual herbicides to improve longer-term weed control.
Program 3 Contact: Mr Jim Barnes 07 4160 0700