Disease Host Crop Scouting Control
Blackleg Canola Pepper-like spots on canola leaves, stems and pods. Premature ripening (dying) plants Unlike sclerotinia, there are no black ‘sclerotia’
Use disease free seed, and resistant varieties. Working infected stubble (incorporating) will help. Seed canola every fourth year.
Blackspot Canola Small, round, black spots on the stems and pods. Infected pods may shatter easily. Follow a 3-4 year rotation with canola. Early swathing may reduce shattering losses.
Sclerotinia Canola Pale-grey to whitish lesions on branches and pods. Infections often where the stem and leaf join (crotch). Sclerotia (black bodies) will
form in the stem, branches and/or pods.
Apply fungicide (done before symptoms appear). A 4-year rotation between susceptible crops, which includes peas, canola, and potatoes.
Common Root Rot Cereals Damping off (death) of seedlings, and reduced or decaying roots. Delay seeding if soils are cool. Avoid growing continuous cereals. Seed treatments will provide some protection.
Ergot Cereals Cool damp weather in the spring will favor ergot. Purple to black bodies appear in place of kernels. Often found on the edges of fields
(indicates infection from headland grasses). If throughout the field, infection likely came from the seed or previous crop infection.
Delayed swathing may allow ergot bodies to drop to the ground. Harvest infected areas separately. Adequate copper fertility levels helps
reduce infection.
Fusarium Head Blight Wheat Barley Infected heads ripen prematurely. Everything above infection point is white. Shriveled grain may have trace of pink on the seed. Cultivation helps reduce levels in the soil. Use clean seed and seed a broadleaf crop after cereal.

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