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Barley Leaf Stripe
Pyrenophora graminea
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General Description
Barley leaf stripe is a seed borne disease which is currently rare
It can however develop rapidly if levels are high on seed stocks, as happened in the 1990s following resistance in the popular seed treatments at the time.
The typical symptoms are yellow and brown stripes which appear longitudinally along the leaf. These always start at the base of the leaf. Affected plants can also be stunted. In cases of sever infection, the leaves may die back prematurely
Biology
The fungus is seed borne, but it is unlikely to affect emergence. Seedlings will appear normal, but at late tillering and ear emergence growth stages, typical stripe syptoms start to appear. The lesions may be confused with seed borne net blotch at the early stages.
Spores develop on the leaves and are wind dispersed to the heads of healthy plants. At harvest, the spores will be present on the seed.
Advice
Test seed for the presence of the fungus. Where levels are high, do not use for seed. Many current seed treatments can offer effective control.
Diary
July
Time to think about seed treatments
Seed treatments play an important role in ensuring a good start for a crop. More...
August
Check seed for germination and seedborne diseases
Test seed for seedborne diseases and germination. More...