Pests and Diseases, Production/Agronomy, Research, Trends

Spanish scientists warn of new resistant late blight varients

Scientists at the Basque Institute for Agricultural Research and Development, Neiker-Tecnalia have for the first time identified the existence in Álava-Araba of the two sexual types A1 and A2 of the fungus Phytophthora infestans, responsible for potato blight. The experts have been able to confirm that the crossing between the two types leads to variants that are more resistant to conventional fungicides and can survive in adverse conditions of temperature and humidity for months and even years on end. The R&D centre’s experts warn of the possibility of crossing between types A1 and A2, which would lead to rapid, significant changes in the population of the Phytophtora infestans fungus with the appearance of new, more aggressive strains resistant to routine phytosanitary teatments. More

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