WA grain growers are levied 30c per tonne to control the deep rooted perennial weed.

But the charge could be doubled if the review’s committee finds there is a need to increase spending on the weed’s eradication.

The program was designed to eradicate the weed but its efforts have hit a brick wall during the past 10 years.

The review is headed by Mt Barker grower and former Grains Research and Development Corporation chairman Terry Enright.

Its 10-member committee is made up of representatives from WAFarmers, the Pastoralists and Graziers Association, and the agricultural and scientific communities.

They will place the program’s operations for the past five years under scrutiny and report its findings to the WA Agriculture Protection Board (APB).

The review’s members are seeking to justify annually spending up to $4m on the program over the next five years.

The month-old review is due to report in November.

Mr Enright said some growers saw the 30c levy as a kind of insurance against skeleton weed and did not consider it a significant cost.

He said another outcome of the review was the possibility that the levy could be increased.