At present, the mid-late ripe apple has entered the expansion period. At this time, the nutrient consumption of the tree is serious. In addition, the recent drought and little rain, some orchards are also affected by the hail disaster in the early stage. The improper management of the orchard is weak and the pests and diseases are serious. The Baishui County Plant Protection Station reminds the majority of fruit farmers to carry out pest control work in the middle and late stages of the orchard in order to reduce the pressure of pest control in the coming year and lay a good foundation for the production of high-quality and high-effect products.
1. Agricultural control: implement agricultural technical measures such as “cutting, scraping, clearing, coating and turningâ€, strengthen field management, rationally pruning, cut off long branches and diseased branches, improve the ventilation and light conditions of orchards; Paint white and turn the soil deep. And remove the fruit of the deciduous fruit in time, concentrate it deeply or take it out of the garden to burn and reduce the occurrence of diseases.
2, physical trapping: late August - early September, tied in the upper part of the trunk or the base of the big branch, after the pest completely sleeps before the exit (the next February), it is best to climb out after the horror Untie the traps and bring them out of the garden to burn them.
3. Chemical control: (1) One week after fruit harvesting, use long-lasting insecticide + broad-spectrum fungicide pesticide combination, and dispense the pharmaceutical liquid according to the recommended dosage. (2) Scrape the rot disease plaque: check the orchard for the new morbidity spot of the rot disease found (the surface of the bark is slightly yellowish green), then use 3% methylthioglycol paste or Phytophthora Aminoacetic acid saline or 45% dexamethasone or cyclodextrin 50 times solution to spread the lesions to prevent further spread of rot.
More pesticide knowledge , please pay attention to China Pesticide Network
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