What pests and diseases need to be prevented and controlled when growing cherry blossoms?
What diseases and pests need to be prevented and controlled when growing cherry blossoms? Please introduce the following diseases and pests that need to be prevented and controlled when growing cherry blossoms: Disease prevention and control. Cherry blossom leaves are susceptible to infection by diseases such as powdery mildew, brown spot, sooty mold, gummosis and root knot disease. If not prevented and controlled in time, it will cause leaves to fall off prematurely, affecting nutrient accumulation, which is unfavorable for flowering next year...
What diseases and pests need to be prevented and controlled when growing cherry blossoms? Please introduce
Growing cherry blossoms requires the prevention and control of the following diseases and pests:
Disease prevention and control
Cherry blossom leaves are susceptible to infection by diseases such as powdery mildew, brown spot, sooty mold, gummosis and root knot disease. If not prevented and controlled in time, it will cause leaves to fall off prematurely, affecting nutrient accumulation, which is unfavorable for flowering next year. For powdery mildew, brown spot and sooty mold, you can choose Bijunsha 1000-1500 solution, 70% thiophanate-methyl 1000-fold solution, 65% zineb wettable powder 500-fold solution, sprayed once every 15 days. Gummosis is caused by moths boring into the trunk to lay eggs. You can use a sharp knife to dig out the eggs, while also improving the soil and strengthening water and fertilizer management. Root knot disease will cause the roots of the diseased tree to be unable to grow normally. No matter how you fertilize, the tree will still not be robust. The tumors should be removed in time, soil disinfection treatment should be carried out, and leaf mold, charcoal powder and microorganisms should be used to improve the soil.
Pest prevention and control
The main pests harming cherry blossom trees are aphids, red spider mites and scale insects. Prevention should be the priority, with pesticide spraying 3 to 4 times a year, the first time before flowering, the second time after flowering, and the third time in July to August. Try to avoid using dichlorvos to prevent leaf drop. Water appropriately, and increase foliar fertilizer spraying (0.3% to 0.5% urea, 0.3% potassium dihydrogen phosphate) to ensure the leaves are intact, thick and dark green.
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