Tomato growers between Carnarvon and Augusta have expressed concern that the poll to be conducted by the Agricultural Produce Commission, is actually a move by the WA Vegetable Growers Association (Vegetables WA) to expand its compulsory levy funding base.

PGA spokesman Sheldon Mumby said it appeared the poll had been requested by Vegetables WA and not by tomato growers.

"The regulations governing these polls are heavily biased in favour of imposing new compulsory levies and experience with other sectors of the vegetable and potato industries has been that small introductory levies quickly become large ones – with Vegetables WA as the main beneficiary," Mr Mumby said.

"We believe the Minister has a responsibility to suspend this poll and to look into the serious anomalies of the APC polling system and also into the way these levies are being used."

He said the PGA had successfully challenged similar compulsory levy proposals by the APC for broadacre farming.