Key points of control of kiwifruit canker in autumn

Kiwifruit canker is the most harmful disease to kiwifruit. As the weather turns cooler, the temperature drops, and the overcast and rain increases, it provides favorable conditions for the occurrence and infection of the disease. The prevention and control of kiwifruit canker should be done as soon as possible. The main technical points are as follows: strengthen cultivation management. In autumn, we should increase the application of organic fertilizer, balance the application of medium and trace elements fertilizer, improve the soil aggregate structure, expand the activity of root system, and strive to improve the disease resistance of trees. Reduce the source of bacteria. Do a good job in clearing the garden, clean up dead branches and fallen leaves in time after falling leaves, take them out of the field and burn them, or dig holes in the field to bury them deeply, so as to reduce the overwintering base of diseases and pests; combined with winter shearing and vine binding, cut off diseased branches in time. Reduce the ways to invade. It is strictly forbidden to plant infected seedlings and collect scions in the diseased orchard to put an end to the disease from the source; to do a good job in the prevention and control of the disease-transmitting insect leafhopper; when pruning the diseased orchard, the cutting tools should be strictly disinfected to prevent man-made transmission. Pharmaceutical prevention and treatment. Can be in late August to September spray prevention, the whole garden spray prevention should be uniform and thoughtful to the trunk, branches, leaves, spray once every 10 to 15 days, even spray 2 to 3 times. The control agents can be sprayed or smeared with agricultural streptomycin, thiobacillus copper, Garinon, Chunleimycin and so on. The use time and multiple shall be carried out in strict accordance with the instructions. Points for attention. Cut off diseased branches, scraped off the diseased tissue must be taken out of the field to burn or deeply buried, reduce invasive bacteria, must not be thrown or stacked in the field, resulting in becoming the source of infection; zone and piece unified and thorough prevention and control, eliminate the source of infection, prevent mutual transmission between orchards; prevention and control of bacterial canker medicament copper preparations are more, pay attention to high temperature above 30 degrees and rainy season can not be used to avoid drug damage.