Phoma

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Fungal diseases reported are powdery mildew (due to Oidium sp.), which is parasitised by Cincinnobolus cesati; leaf spot (caused by Phoma sp.) and stem rust (caused by Aecidium sp.).

Chapter 6 1987
Phoma oxalidicola, Septoria sp., and Cercospora oxalidiphila.

Chapter 24 1987
Phoma in the autumn can lead on to stem canker in the spring.

FWi - All News 2009
Phoma is in the crops and in the main have been treated.

FWi - All News 2009
Phoma is starting to come in to the earliest drilled crops or where adjacent to last year's stubbles, so I will be combining fungicide with graminicide.

FWi - All News 2009
Phoma is evident in all crops, and for some at threshold levels so fungicides are now ready to be applied.

FWi - All News 2009
Phoma has reappeared in some crops and treatment will still be beneficial where the plants are small and lesions are apparent.

FWi - All News 2009
Phoma levels in oilseed rape remain relatively low at present, but continue to monitor and treat once a threshold of 10\% plants infected is reached.

FWi - All News 2009
Phoma is now easily found and will need attending to next week in some instances.

FWi - All News 2009
Phoma is at or beyond threshold in most crops and should be treated as soon as possible, if not done already.

FWi - All News 2009