Citrus resin disease, also known as fluid gum disease, mainly damages trunks, branches, leaves and fruits. Citrus resin disease is severe in high temperatures and rainy seasons, and it is difficult to cure after onset. After fruit picking in the winter, the disease will be eliminated, the lesions will be eliminated, and the bacteria will be eliminated. The disease will not occur in the second year of high temperature and rainy weather, which will play a multiplier role.
Specific prevention and control methods: After citrus fruit picking, pay attention to check the citrus trees and find dry branches, yellow brown or dark brown colloidal sand on the leaves, brown dead bark on the trunk, and emit distiller's smell It is necessary to first cut off the dried shoots, and then spray the canopy 2-3 times with 600 times 20% aqueous Thiosesen solution, or 1000 times 74% aqueous solution of copper hydroxide, or 800 times the 1.8% aqueous solution of octamine acetate, or 600 times 50% tetromycin solution, or 800 times 65% zebazin aqueous solution, spray once every 10-15 days, evenly spray all the branches inside and outside the canopy, especially to pay attention to wet the diseased trunk and branches to It is advisable to start dropping drops of water.
At the same time, use a sharp knife to scrape off the viscous gel from the diseased skin and apply a layer of lime sulfur residue, or a 1:1:50 dilution of Bordeaux pulp, or 200 times 80% of the bacteria. Aqueous solution, or 150 times 70% aqueous solution of thiophanate-methyl solution, continuous coating 3-5 times, once a day, evenly coated at the diseased place, to fill the wound with liquid medicine is appropriate. In addition, in the winter, spray a 0.8-1.0 bamiide ​​aqueous solution of lime sulfur inside or outside the canopy, or a 1:1:100-fold Bordeaux mixture, evenly spray all the trunks and leaves to begin dropping drops of water. Appropriately, it has a good effect on reducing the occurrence and harm of resinous diseases.
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