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Barley net type and spot type populations resistant to the DMI group of fungicides are present in WA.
Control methods for Grader grass (Themeda quadrivalvis) a declared pest in Western Australia.
Control methods for neem (Azadirachta indica A.Juss) a declared pest in Western Australia.
There are a limited number of foliar fungicide active ingredients registered for lupin diseases in WA, in either narrow-leafed or albus lupins.
Regulations for the aerial application of agricultural chemical products are necessary to maximise crop production while managing the risks associated with chemical application.
The term 'residual' applies to a number of herbicides that have a long lasting activity in the soil. These herbicides are often applied directly to the soil prior to planting crops, pre-emergent.
Up to date autumn/winter and winter/spring insecticide spray guides are provided by the department every year to help growers and consultants manage insect pests in canola, lupin and cereal crops.
Seed dressing and in-furrow fungicides contain active ingredients for the control or suppression of seed-borne diseases and some fungal root rots in canola.
Following the extended dry conditions this autumn, weeds are now emerging and becoming a challenge for growers to manage in paddocks that may have patchy crops, crops with staggered emergence or no
Powdery mildew has become more prevalent in WA wheat crops over the past few years, particularly late in seasons.