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Leaf spot diseases affecting wheat in Western Australia are septoria nodorum blotch, yellow spot and septoria tritici blotch.
Information is provided here to assist management of diseases and viruses that occur in broadacre crops grown in Western Australia - cereals (wheat, barley, oats and triticale), pulses (field pea,
Yellow leaf spot can have a significant impact on wheat yields.
In 2015 powdery mildew reached damaging levels in several regions. With the green bridge leading into the 2016 season, the disease could have significant impacts.
Cereal smut and bunt diseases are caused by fungi which parasitise the host plant and produce masses of soot-like spores in the leaves, grains or ears.
Stripe rust (Puccinia striiformis f. sp. tritici) and leaf rust (Puccinia triticina) can be a significant threat to wheat crops in Western Australia in some seasons.
For successful management of sclerotinia stem rot in most years it is critical to target fungicides at early stage of bloom (20-30%), but optimal timing can vary depending on the season, in particu
Previous research in high rainfall zones or above average seasons has shown that in cases where leaf spot disease levels are high very early, fungicide application at or before first node (Z31) is