Abstract— Barley (Hordeum vulgare L.) is one of the ancient grain crops cultivated and used worldwide. In Ethiopia, barley is among important staple crops next to tef, maize, wheat and sorghum mainly grown on about 1 million ha of land with average yield of 2.1t ha. It is the predominant cereal in the high altitudes and it accounts nearly 25% of the total production in Africa.
The fungi Pyrenophora teres f. teres (Ptt) and P. teres f. maculata (Ptm) cause net form net blotch (NFNB) and spot form net blotch (SFNB) of barley, respectively. Net blotch is one of the most important barley diseases which reduce both quality and quantity of barley grain. Yield loss due to this disease reaches up to 100% in susceptible cultivars under severe epidemics. In Ethiopia, barley net blotch is among widely distributed and destructive diseases in cool highland areas and yield losses reaching about 67% have been recorded. Currently, the disease can be controlled using different approaches such as cultural, chemical and biological controls as well as using resistant cultivars of which development and deployment of resistant cultivars is the best management method. However, it is argued that using integrated disease management is one of the most important strategies that should be followed to reduce the effect of barley net blotch diseases. This review discusses recent information on economic importance, epidemiology, life cycle, host range, geographical distribution and disease management of barley net blotch disease. It also presents the barley net blotch disease management methods such as cultural, chemical, biological and use of host resistance methods. Under host resistance method, information on types of resistance, sources of resistance have been presented.
Keywords— Barley net blotch, Disease management, Methods, Cultural, Chemical, Host resistance.
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