Induced Biochemical Defence Mechanisms in Tea against Blister Blight
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Date
2012
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Publisher
Uva Wellassa University of Sri Lanka
Abstract
Blister blight is the major and most destructive leaf disease in tea that caused by Exobasidium vexans, fungi. II is a poly-cycle disease. The pa1hogeM completes its like cycle in I I -28 days (Gadd el al., 1948). There are no tea cultivars which have been found to acquire complete resistance ło the disease. Tea cultivars in Sri Lanka have been categorized in to resistant and susceptible (Balasooriya el al. , 1996). Appropriate control measures are vital for the survival of the plant. Chemical fungicides are sprayed at recommended intervals throughout the disease season and an average of 24-28 rounds of fungicides spray is required to keep the disease under control (Ajay el ni., 2009). The large scale applications of fungicides pollute the environment and their residues can cause various health hazards to the human beings. An alternative strategy is to understand the tea plants induced biochemical defense mechanisms exploiting natural defenses against blister blight and using them in disease management. This approach would be an enyironmen1 friendly, sustainable approach.
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Keywords
Tea process Engineering and factor Automation, Agriculture, Entrepreneurial Agriculture