Cherry brown rot, seriously affecting the quality and yield of cherries, timely pesticide control, and reduce losses. China Pesticide Network Xiaobian gives you support to prevent and cure diseases:
The symptoms of cherry brown rot are harmful to flowers, leaves, young shoots and young fruits, and the fruit is the most seriously damaged. The flower is susceptible to browning and wilting. When the weather is wet, the surface of the flower affected part is covered with gray mold. When the weather is changed, the flower becomes brown and wilted, and the frost is left on the branch. Fruit stalks and new shoots were damaged to form oblong, sag, gray-brown ulcer spots. The edges of the lesions were purple-brown, and the glue often occurred. When it was around 1 week, the upper branches died. If the weather is wet, gray mold can grow. The fruit is damaged, the primary brown round lesions, and then expanded to the whole fruit, brownish soft rot, the surface produces a gray-brown velvet-like mold layer, often arranged in a communication wheel, the disease fruit is easy to fall off, and some water loss becomes a stiff Fruit, does not fall off, and finally turns dark brown.
The incidence of cherry brown rot:
The pathogen mainly overwinters the mycelium in the ulcerous part of the fruit or the tip of the branch. Spring and autumn cherry flowering period and young fruit period may cause flower rot and rotten fruit when it is cold and rainy. The management is extensive, the orchard is densely planted with poor ventilation and light transmission, the pests are serious, and the low-lying water is accumulated, and the tree is weak, which is beneficial to the disease.
Cherry brown rot prevention and treatment methods:
1 Eliminate the source of overwintering disease, combine pruning to completely eliminate diseased branches and dead fruits, concentrate on burning, and at the same time carry out deep ploughing and deeply bury the sick body on the ground.
2 Control pests in time to reduce the chance of pathogen invasion.
3 When harvesting and transportation, try to avoid wounds and reduce the infection of the bacteria during storage and transportation.
4 spray protection, spray the 3-5 degree stone sulphur mixture before the germination of the cherry tree, spray 50% of the keeling WP 1000 times or 70% thiophanate WP after the initial flowering and falling flowers. 1000 times liquid can effectively control flower rot and young fruit. 1 month before harvesting, spray with the above pesticide or 65% sensible zinc wettable powder 500 times solution, 50% carbendazim WP 1000 times, spray once every 10-15 days, continuous 2-3 Second, you can control the fruit rot.
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