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Polyphagous shot-hole borer (PSHB) Euwallacea fornicatus is a beetle native to Southeast Asia. The beetle attacks a wide range of plants by tunnelling into trunks, stems and branches.
Eutypa dieback is caused by the fungus Eutypa lata which is a prohibited organism in Western Australia. It is a major trunk disease of grapevines that reduces yields and kills the vine.
Sclerotinia shoot rot is caused by the fungus Sclerotinia sclerotiorum.
Phomopsis cane and leaf spot is caused by the fungus Phomopsis viticola which is a prohibited organism in Western Australia.
Downy mildew, caused by Plasmopara viticola, is a major disease of grapevines that originates from North America.
Powdery mildew is the most persistent fungal problem of grapes in WA and one of the most widespread fungal diseases of grapevines in the world.
Downy mildew of grapevines can cause serious crop loss if weather conditions are favourable.
Bunch rots of grapes are widespread in Western Australia and reduce yield and quality. Weather conditions and control strategies influence the severity of losses which can vary between vineyards.
Black spot, or anthracnose disease of grapevines is caused by the fungus Elsinoe ampelina.
Clubroot is caused by the pathogen Plasmodiophora brassicae.