![]() The ratings of the other characteristics are decided by the EuroBlight experts (independent scientists and representatives from the crop protection industry) on the basis of available data. The first ratings for early blight control based on EuroBlight trials will become available in 2017. Tuber blight ratings are now also based on EuroBlight trials. The results of the trials were used to re-evaluate the effectiveness of fungicides to control potato late blight.Ī similar approach was later adopted for tuber blight control and recently also for early blight control. Dose rates were the highest preventative doses registered in Europe. In addition, during the rapid growth phase of the crop also the protection of new growth can contribute to the effectiveness of the fungicide for leaf blight control. The protection originates from the protectant and/or curative properties of the active ingredients. In total, 31 field experiments were set up to compare the fungicides’ effectiveness against leaf late blight by measuring the protection of leaves resulting from the application of a fungicide in a standard 7-day spray schedule (this standard spray schedule does not necessarily correspond with the label recommendations). Each year from 2006 to 2015, at least three experiments were carried out. The ratings of fungicides for leaf blight control for the EuroBlight table are calculated when field experiments are carried out over two years in three European countries. To evaluate the effectiveness of fungicides, harmonised protocols are agreed upon. Since 2008, the ratings have been based upon common trials. Until 2007, the ratings were based on judgements made by independent researchers and experts from agrochemical companies. The EuroBlight table was set up to provide an overview of the value of each characteristic. ![]() Each fungicide has its own mode of action, efficacies and other characteristics. A whole range of fungicides are registered in Europe. It is important to use fungicides that effectively protect leaves against this disease. infestans by spraying fungicides regularly during the growing season. Late blight caused by Phytophthora infestans is the most important foliar disease in the cultivation of potatoes.
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