infestans strains collected from all possible sources: farmers, allotments, home gardens etc…īlight infected potato stem. This entails the molecular and phenotypic characterisation of Irish P. To ensure such changes are detected the population is monitored on an annual basis. infestans never remain static and the potential for either migration of new genotypes into Ireland or the development of sexual progeny within Ireland poses real threats to the future success of current control strategies. By understanding how these genotypes interact with their environment, it is possible to develop novel disease control measures to minimise blight’s impact upon potato crops. infestans population is dominated by three distinct genotypes. Potato varieties growing in Carlow, July 2009 and the Impact of blight epidemic on same site two weeks later The Teagasc Late Blight Research programme is focused on three major themes Studying Irish populations of blight:Ĭurrently the Irish P. Given Irish climatic conditions during the summer months where such preventative measures are not applied losses of up to 100% can be experienced. In Ireland alone it is estimated that €5 million is spent annually on fungicides to mitigate the impacts of the disease, which represents between 15-20 fungicide applications per season. The primary potato disease remains Phytophthora infestans (late blight), it is responsible for €1,000,000,000 of annual losses in the EU alone. Potato late blight, caused by the oomycete pathogen Phytophthora infestans, continues to be the most economically destructive disease of global potato crops. Botanic Gardens College of Horticulture.
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