Post-harvest pest control of fruit trees after deciduous fruiting
Because of the nutrient consumption of fruit trees after harvesting, the tree body has gradually weakened and entered the second nutrient conversion period of fruit trees, and because some orchards are affected by excessive results in the current year, poor management, pests and diseases, adverse climate (high temperature, drought, typhoon) Affected, some fruit trees appear early deciduous, secondary growth phenomenon, such as the second flowering of pear in autumn, will seriously affect the accumulation of nutrients in the tree that year, is not conducive to the growth of the tree. Liyuan, Taoyuan, and Liyuan affected by the autumn drought will have early defoliation, early flowering, and leaves being eaten by insects, which will seriously affect the annual output. In order to ensure the differentiation of flower buds for fruit tree protection and guarantee the following year's output, post-harvest management of fruit trees must be done. 1. Agricultural control: Increase the use of fruit fertilizer, reasonably drain irrigation, increase tree vigor, and increase resistance; remove diseased leaves, diseased branches, and diseased fruits in a timely manner, reduce the number of diseases and insects, and reduce reinfection. 2, physical control: install insecticidal lamp to kill peach aphid, pear pests and other pest adults. 3. Chemical control: 1. Liyuan: It is in the management period from fruit picking to defoliation. The pests that injure the leaves mainly include early defoliation, ringworm disease, branch stem rot, pear nettle, red spider, and leafhopper etc. They should be strengthened. Postharvest pest control. In early September and late September, the whole garden sprayed once insecticidal bactericide and foliar fertilizer mixture, and can spray 75% chlorothalonil WP or 600-800 times or 10% WORLD 2000 times spray or 80% M-45. The 800 times solution or 70% thiophanate-methyl 1000 times solution + 5.7% cyfluthrin EC 2,000 times plus 0.5% urea solution. If the hydrazine is severe, 15% Triterpenium should be added for 2000 times. Scrape to cure stem rot and ringworm disease: use a sharp knife to scrape off the affected area and scrape off a good part of the edge of the bark, deep to the xylem, and then spread the drug, you can use 30% rotten enemy WP 100-200 Times. Early removal of weeds and clean up of ravines: In early September, clean up the collection of deciduous fruit in the garden and deep-buried or burned in conjunction with orchard deep turning to reduce the source of the disease. To cut off pests and branches early: Cut branches that have been damaged by branch rot, ring vein disease, and lice, and burn them together. 2. Grapes: Focus on prevention of downy mildew, white rot, anthrax, two-leafhoppers, leafhoppers, and tiger moth larvae. Agent selection: 25% azoxystrobin (Amisida) can be used 1500 times (high-efficiency, low-toxic, non-pollution, broad-spectrum fungicides) plus 5.7% cyfluthrin EC, 2000 times, spraying once every 10-15 days At the same time, we must timely remove the diseased leaves and fruit. Other protective agents can be 1: 0.7: 200 times Bordeaux, 35% colloidal suspension copper suspension 300-500 times or 12.5% ​​diniconazole wettable powder 2000 times and so on. 3, peach, Li Yuan: focus on the prevention and treatment of leeches, leafhoppers, leaf A, etc., can be used 70% thiophanate-methyl 800 times or 50% carbendazim 500 times plus 5.7% cyfluthrin EC 2000 times or 40% chlorpyrifos 1000 Times of liquid; timely removal of stale fruit and pests and rotten fruit; strengthening gutter drainage; removal of weeds. Lab Microscope,Binocular Biological Lab Microscope,Binoculars Lab Optical Microscope,Laboratory Biological Optical Microscope NINGBO VANCO INSTRUMENT CO.,LTD , https://www.vancoscope.com