Pear ring disease prevention and treatment method
Pear ring disease, also known as rough skin disease, neoplasms, is one of the important diseases of pear in China. [Hazardous Symptoms] The main damage stems and fruits, followed by the leaves. The onset of the leaves, mostly from the tip of the leaf, produces an irregular brown spot that gradually turns grayish white. In severe cases, the leaves fall off early. [Control methods] (1) Strengthen cultivation management, increase organic fertilizer, increase tree vigor, and increase tree resistance. The ringworm disease is a weak parasite, and the disease is severe when the tree is weak, but the disease is light or the disease is not disease. (2) 40% Formamide arsenic 100 times solution or lime sulfur 5 Baume degree before germination. After the pears have been given flowers, depending on the rainfall and combined with the control of other diseases, the pesticides can be sprayed in time. The available agents are: 50% carbendazim WP 600-800 times, and 70% SON MnZn wettable powder 500-600. Times of liquid, 50% of the WP wettable powder 600-800 times, etc. are used alternately, but the withdrawal of the bacteria must be stopped before the fruit is harvested 20 days ago. Cut Swimming Crab,Portunus Trituberculatus,Frozen Swimming Crab Cut,Frozen Half Cut Blue Swimming Crab Zhoushan Haiwang Seafood Co., Ltd. , https://www.haiwangseafoods.com