NEW research has led to updated provisions to control stable fly in the Shire of Serpentine Jarrahdale and City of Armadale, among other affected local government areas.
Stable fly can attack domestic pets and livestock, as well as humans, seeking to draw blood.
The management of poultry manure and vegetable waste has changed following research funded by growers and local government, Department of Agriculture and Food stable fly project manager Don Telfer said.
“All poultry manure used in the stable fly-affected shires will now need to meet the Australian Standard for composting,” he said.
Mr Telfer said the handling and treatment of vegetable production waste had also altered.
“Within three days of finishing harvest, the waste must be mulched, water turned off, and the area sprayed with insecticide as per the current management plan,” he said.
“In addition, alternative options include deep burial, by stone burier or mouldboard plough, or treatment with an approved measure of deep rotary hoeing five times in five consecutive days.”
The depth for burying vegetable waste in pits has been increased from 300mm to 500mm, combined with an insecticide treatment, to prevent adult stable flies emerging from under the sandy soil.
Animal manure, soiled bedding, rotting hay and feedstuffs must immediately be collected into a pile and treated by insecticide and left for two weeks, or covered with plastic sheeting until no stable fly larvae or pupae are observed.
The Shire of Capel is a newly declared shire under the plan, and joins existing local government areas of Armadale, Cockburn, Joondalup, Kwinana, Rockingham, Swan and Wanneroo, as well as the Shires of Chittering, Gingin, Harvey, Kalamunda, Serpentine-Jarrahdale and portions of Murray.
Mr Telfer encouraged producers with enquiries about the new changes to questions to contact the department on 9368 3553.