Fruit tree spring "medicine bath"

In the spring, before and after flowering of fruit trees, it is a good time to control pests and diseases of fruit trees. Because various bacteria and pests become active after dormancy in this season, the resistance to drugs is poor, and the leaves are not germinated, unobstructed, convenient to apply, and fruit trees are not. If phytotoxicity occurs, the "medical bath" should be promptly prevented.
First, pre-flower control (A) timely spraying a 5-wave US stone sulphur mixture, can control fruit tree rot disease, inhibit winter red spider breeding, has a significant effect on the control of leaf curlers, scale insects. It can also be sprayed with 40% Fumex arsenic 100 times solution. (2) Prevention and treatment after germination. The orchard sprays a 45% crystal sulphur mixture 150-200 times solution, or sprays 3 waves of sulphur sulphur mixture to kill the bacterial spores of powdery mildew and deciduous diseases that are overwintering in the buds. Scarabs and locusts. (3) Prevention and treatment before flowering after germination. Spray 80% of dichlorvos 1200-1500 times liquid, or enemy kills and pyrethroid pesticides 2500-3000 times liquid, which has obvious control effect on pests and rot.
Second, post-flower control (A) after the flower can continue to spray 0.3-0.5 Baume degree stone sulfur mixture, control leaves, fruit diseases and red spiders. It can also spray 2500-3000 times of liquid, which can prevent and kill red spiders and kill eggs of leaf-feeding insects and heartworms. (2) Spraying 1:4:20 Bordeaux mixture (1 kg of copper sulfate, 4 kg of quicklime, 20 kg of clean water) 10-15 days after flowering, or spraying 40% of carbendazim and 600-800 times of antibacterial Liquid can prevent defoliation, anthracnose and brown spot disease which are prone to rainy and high temperature. (3) Probiotics and dichlorvos are strictly prohibited for one month after flowering.
Huaxian Agricultural Technology Promotion Center Huang Lihua

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