Category Archives: Diseases

Early Yellow Rust Infections

Yellow rust is caused by the pathogen Puccinia striiformis. Symptoms appear as parallel rows of yellowish orange coloured pustules on the leaves of plants, usually slowly developing over the winter. In the spring, small patches of infected plants can often be seen. Severe infections quickly cause chlorosis, and later necrosis, of leaves resulting in death […]

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Pest of the week – Take-all

Take-all (Gaeumannomyces graminis var. tritici) is a soil borne disease affecting wheat, barley, rye and triticale. Estimations suggest that half of the UK wheat crop is affected, and yield losses can be as high as 20%. In severe cases, up to 50% of the crop can be lost. The cost to farmers is hard to […]

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Pest of the week – Phoma leaf spot

Phoma leaf spot and the resulting stem canker is caused by 2 pathogens,¬†Leptosphaeria maculans and Leptosphaeria biglobosa. The disease is predicted to cause ¬£100M of damage each season, making it one of the most important diseases of winter oilseed rape in the UK. The disease spreads in the autumn by airborne ascospores that are released […]

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