Growers who plan their crop rotations could reduce yield losses during the growing season by testing for the microscopic soil pests root lesion nematodes (RLN)... Department of Agriculture and Food, Western Australia (DAFWA) senior nematologist Dr Vivien Vanstone is leading ongoing GRDC-supported research into RLN management in WA. She says the absence of registered chemicals to control nematodes in broadacre crops prevents growers from eradicating the pests. ".. GRDC-funded projects aim to clarify yield losses and ascertain variety tolerance to nematode species in WA. "This will provide information to help growers choose varieties that are the least prone to yield loss under nematode attack. "..