Potato farmers are warning that growers will walk away from the industry as cost pressures make the staple crop unviable in Australia.
Unlike most vegetables, potatoes are not traded on wholesale markets that rise and fall with supply and demand.
Instead, they are sold by farmers to companies that wash and package them (washpackers) and set prices with supermarkets in much the same way as dairy milk processors.
"It's not really a free market. The price doesn't really go up or down for the farmer based on demand or supply," WA Seed Potato Producers president Julian Ackley said.
"We'll probably see another 5 to 10 per cent of what's left of them drop out this season."
The chips are down
Tony Galati is a potato grower, washpacker and retailer in WA through Spudshed.
"I'm a grower and a packer — I wouldn't grow for a packer."
He said chain retailers could "absolutely" pay farmers more and still make money, even if they lowered prices.
"When farmers were getting 80 to 90 cents a kilo for potatoes, they were about $4 at the supermarket. Now, they're getting 40 to 50 cents a kilo and they're still about $4 at the supermarket — that money is going somewhere."
'Corporate control' looming
Mr Ackley warned that family farmers leaving the industry would be replaced by corporations.
"I think it's going to come down to more big corporate growers controlling the industry."
The WA potato industry was deregulated in 2016, causing prices to crash and saw many farmers walk away from the state.
For now, Julian Ackley has difficult decisions to make on his own farm.
As a seed potato grower, he is able to choose what he charges the farmers who buy from him to grow fresh potatoes.
"Trying to decide what to charge for the seed this season is very difficult, because I know all my growers are really struggling to get a good price for their product," he said.
However, his harvest has dragged on dangerously close to winter and the profitability of his year's crop is at risk.
"We have much less than 10 per cent [of the harvest] to go. Normally that would be a quick job, but with everything so wet and heavy, it's difficult.
"We still have about $70,000 of potatoes sitting out here which I'd like to have, because that's about the profit margin."