Fungi Commons^™

Blackleg And Its Management In Canola, Department Of Primary Industries And Regional Development, Western Australia

Grains and other field crops factsheets

Blackleg, caused by the fungus Leptosphaeria maculans, is the most common and serious disease of canola in Western Australia (WA). Blackleg can cause significant damage by infecting the cotyledons or first leaves early in the season, leading ultimately to crown lesions or cankers later in the season.

Changes in variety choice, crop rotation, earlier sowing times, and stubble retention have extended the risk of blackleg disease. Because of early emergence, later stages of crop growth are more likely to be exposed and infection can occur on all parts of the plant above ground, including canola flowers, stems, and branches (this …

Sclerotinia Stem Rot And Its Management In Canola, Department Of Primary Industries And Regional Development, Western Australia

Grains and other field crops factsheets

Sclerotinia stem rot, caused by the fungus Sclerotinia sclerotiorum, is a disease of canola that can cause significant yield losses exceeding 20% under conducive conditions. This disease occurs in all areas of the WA grainbelt.

Sclerotinia stem rot is one of the most variable and unpredictable diseases of canola, with incidence of infection varying greatly between paddocks and between years. Yield losses can be severe in years of higher moisture, cool conditions, and high humidity, which favour disease development.

This factsheet details the symptoms, disease risk and spread, yield and quality losses, and integrated disease management tactics for sclerotinia stem …

Septoria Avenae Blotch And Its Management In Oats, Department Of Primary Industries And Regional Development, Western Australia

Grains and other field crops factsheets

Septoria avenae blotch (Phaeosphaeria avenaria f.sp. avenaria) is a stubble borne fungal disease of oats and is the most common oat disease in Western Australia and occurs throughout the cereal growing areas.It is host specific, meaning it only affects oats.

This page summarises the symptoms, factors favouring disease risk and spread, yield and quality losses, and management strategies for the disease