Guidelines for monitoring and controlling native budworm are available to help grain growers minimise crop damage caused by the late-season pest.
Department of Agriculture and Food (DAFWA) entomologist Svetlana Micic said native budworm caterpillars were present in some susceptible crops in the grainbelt.
“Native budworm (Helicoverpa punctigera) is a damaging pest of pulses and canola in Western Australia, affecting both grain quality and yield,” she said.
“Late season hatchings are often too late to cause economic damage; however native budworm larvae can still damage canola after windrowing if many pods are still green.
“Be aware of insecticide withholding periods (WHP) close to harvest and remember that windrowing is classified as harvest.”
Past research supported by the Grains Research and Development Corporation (GRDC) has helped DAFWA refine native budworm monitoring and control guidelines, which are incorporated in an economic threshold table available by searching ‘budworm’ on the DAFWA website.
Information and resources about native budworm are also available in the GRDC Hot Topic Budworm in Western Australia.
To stay updated with the latest pest and disease information, sign up for the DAFWA PestFax newsletter and PestFax Map by searching ‘pestfax’ on the DAFWA website.
Svetlana Micic, DAFWA
08 9892 8444
Natalie Lee, Cox Inall Communications
08 9864 2034, 0427 189 827
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