The disease can arise from infected seed but the main source of inoculum is infected stubble and volunteer plants. The disease spreads by air-borne spores and rain splash. Cool, wet and humid weather favours this disease as do thick sowing, early drilling and minimal cultivation techniques.
The first symptoms are very small, dark brown lesions on the leaves. These develop into short brown stripes or irregular blotches which, on close examination, are seen to consist of a network of brown lines. The ear can also be infected, but lesions do not usually appear.
Stubble cleanliness helps to reduce the potential inoculum for infection. Varietal resistance factors should also be considered.
Fandango (prothioconazole + fluoxastrobin) is the tried and tested solution used by thousands of barley growers. It provides cost-effective treatment for the broadest spectrum of barley diseases. Independent trials have demonstrated that Fandango consistently delivers greater yields than standard treatments in barley.
If the main focus of the disease control programme is net blotch then upgrading to SiltraXpro (prothioconazole + bixafen) should be considered as this is one of the key strengths of the product.
Find out more information on the key disease threats to your barley crop. For each disease you will find out the importance of the disease in terms of potential yield penalty, how to identify the disease in its early stages and our advice on the best control strategies.View now