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I am an older customer of yours. I am currently struck by these two problems, one related to spiders, and the other related to an insect that stings the shoots of sea buckthorn trees, which later dries. The second problem is also observed last year, but we did not consider it to be a great danger. It’s just that this year it seems to be present in almost all the trees. The surface of this orchard is over 5 hectares, both young and mature plantations. I also sent these pictures to the company that sold the planting material. They think it’s buffalo leafhopper, in the case of stings. Please help me with advice on the treatments I need to perform for both problems. Thanks in advance!
Hello, indeed, the shrub shows the symptoms of the attack of the buffalo treehopper (Ceresa bubalus). It forms incisions in the bark of the tree, in which eggs are laid during the cold season. As control methods, it is recommended to apply specific insecticides against larvae in May and apply treatment during the dormancy period with horticultural oil (Estiuoil, 100 ml, Mospilan Oil 20 SG 10, 3 g + 50 ml or Ovipron Top, 100 ml) and copper fungicide (Bouillie Bordelaise WDG, 500 g, Champ 77 WG, 200 g or Funguran OH 50 WP, 300 g ). Most likely the tree starts later in vegetation, being weakened due to pest attack, but you can cut 1-2 branches to see if they are still green. Detailed information about this insect, its control, as well as the recommended treatments, you can find in our article: Buffalo treehopper (Ceresa bubalus) - pest management.
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