What to do if the cherry tree has brown rot?

What if the cherry tree has brown rot? How to control harmful symptoms cherry brown rot, also known as Sclerotinia sclerotiorum, gray rot and so on. It can damage flowers, leaves, branches and fruits, but the fruit suffers the most. After infecting the floral organ, the stamens and petals first had brown watery spots, then the whole flower rotted rapidly and the surface was clustered with gray mold. When the leaves are damaged, dark brown water stains occur at the edge of the young leaves, which rapidly expand to the petiole, making the whole leaves wilt and droop, such as frost damage. The disease can occur from young fruit to mature fruit, and the disease is more serious in near-mature fruit. Brown round disease spot occurs on the fruit surface in the early stage of the disease. if the condition is suitable, the disease spot can expand to the whole fruit in a few days, and the flesh becomes brown and soft rot. After that, grayish brown to gray-white cashmere globular mildew appeared on the surface of the disease spot. The diseased fruit is easy to fall off after decay, but it can also be dried and shrunk into a stiff fruit and hang on the tree. The pathogen of brown rot overwintered mainly by mycelium on stiff fruit and diseased branches on trees or on the ground. It is transmitted by water and insects in the growing season, invading from wounds and lenticels. In the period from flowering to young fruit, it is easy to cause flower rot or fruit rot under the condition of low temperature and humidity. Fruit ripening period is easy to cause fruit rot under high temperature and humidity conditions. The tree is weak, the branches and leaves are too dense, and the poor ventilation and light transmission can easily cause the disease. Scientific prevention and control of ① spring temperature rise, spray 3-5 Baume degree of stone sulfur mixture. Reasonable pruning of ② can improve the ventilation and light transmission condition of the orchard, reduce the humidity of the orchard, strengthen the control of insect pests and reduce the spread of bacteria. After falling flowers, ③ cherries are sprayed with 80-1000 times of methyl topiramate, 1000-1200 times of methylmethalin, or 65% of Dysen zinc wettable powder, etc., and then spray twice every 15 days or so. Starting 30 days before maturity, ④ sprays 1000 times of 50% metformin, 700x of 75% chlorothalonil wettable powder, 500x of Jinggangmycin water, or 1000 times of 50% propofol, which has a significant effect on disease prevention. ⑤ killed the overwintering pathogen. Combined with winter shearing, thoroughly cut off the stiff fruit and diseased branches on the tree, and concentrate on burning. At the same time, sweep the orchard floor, and then do a deep turn. Combined with ploughing the orchard, bury the nuts below 10 centimeters. Click to get more cherry planting techniques click to get more fruit planting techniques