1. It is easy to cause early leaf fall disease Happen early The occurrence of disease is closely related to air humidity. For example, brown spot disease, usually in late May when the temperature exceeds 24 degrees and the humidity in the orchard reaches 80% or more, it will quickly infect and cause leaf fall in June. Early-ripening apple anthracnose leaf blight occurs at a time similar to brown spot disease, and the pathogenesis is basically the same. 2. Easy to cause coal pollution The period from now to mid-to-late May is the period when fruit growers are bagging. Rain causes high humidity in the orchard. The fog condenses on the fruit surface and the fruit enters the bag with dew, which promotes the propagation of bacteria in the bag. In the future, the proportion of coal-stained fruits will be high. The principle is the same as that of not bagging immediately after spraying. You must wait for the fruit noodles to dry and then bagging is the same. In addition, bagging with dew on the fruit surface will aggravate the occurrence of bagged apple black spots. Third, the tree is not easy to stop growing The Guyu solar term has passed. Summer begins on May 5, and in late May, the spring shoots of fruit trees should stop growing. The usual measure is to control water appropriately. The continuous rain is equivalent to watering the orchard, which will cause the new shoots to grow continuously when they should stop growing, affect the degree of lignification of the branches and delay the process of flower bud differentiation. In short, if there is rain from now to mid-to-late May, especially heavy rain, management should be paid attention to. Regarding tree control, the focus is on fertilizer and water regulation. It is very important to supplement fertilizers in late May and early June. One is to promote the expansion of young fruit, and the other is to promote the differentiation of flower buds in the next year, but also to control water. Therefore, the fertilizer should be low-nitrogen, which can add organic matter and microorganisms for better effect. Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of a third party are involved, please inform this website for processing. phone Clinic Nitrile Gloves,Nitrile Gloves Small,Medical Gloves Unsterilized,Nitrile Gloves Powder Free Latex Free Puyang Linshi Medical Supplies Co., Ltd. , https://www.linshimedicals.com