Key Points for Prevention and Control of Diseases and Insect Pests in Apple Inflating Period
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In prevention and control, we must adhere to the green prevention and control technology key points of “implementing monitoring of pests and diseases, application of immune-inducing products, optimization of combinations of pesticides, compliance with safety requirements for use of pesticides, and improvement of scientific pesticide application technologyâ€. Farmers should promptly implement the characteristics of pests and diseases in their own orchards. Prevention.
First, symptomatic selection of pharmaceutical combinations breed early defoliation occurs in heavier orchards to be protective and systemic fungicides used in combination, protective fungicides can be used mancozeb 75% water dispersible granules or 80% WP, 70 % Prosin Zinc wettable powder and so on. In the orchard-based orchard, the 80% tebuconazole water dispersible granules, 10% difenoconazole water dispersible granules, and 70% thiophanate-methyl dispersible granules may be used. Select 3% polymycin wettable powder for spotted leaf disease. Insecticides and acaricides can be selected by intramuscular contact and stomach poisoning, such as 1.8% abamectin EC, 25% diflubenzuron, 5% AVS, 50% Bromoxime EC, 15% of Ling Ling EC.
The selected fungicides, insecticides and acaricides should be mixed uniformly according to their respective recommended dosages. Finally, the immune inducer 5% amino oligosaccharide aqueous solution 800-1000 times foliar spray should be added to promote fruit enlargement and quality improvement. ,Increase production.
Second, improve the application of pesticide technology, ensure that the effect of anti-effective garden when the application of high-efficiency spraying equipment, focusing on the atomization effect, scientific control of the amount of liquid application, improve the utilization of pesticides, reduce waste and pollution. Balance pressure should be maintained during spraying, and the finer the atomization of the liquid medicine, the better the control effect. Constant spray orchard per acre spraying liquid control in the 50 ~ 80 kg, with moist but not drip leaves as well, the spray must be meticulous, thoughtful, brown spot disease with the first canopy and internal hemorrhoids first onset, spotted larvae disease In this period, new shoots of autumn shoots are infested, from the top to the bottom of the spray, from the inside to the outside of the crown.
Third, the timely application of pharmacy to dry the skin of the apple tree (the formation of tree surface tilted, scale-like, easy to fall off brown necrotic cortical tissue) formation period is the period of invasion of rot bacteria, when the new spot is limited to surface ulcers, Without going into the cortex, choose 1.8% octamicin acetate (Bikang) or 45% dexamethasone (Schnering) 50-100 times or 3% Thiophanate (Jinzhi) etc. Brushing the trunk, branch and other parts of the apple tree can effectively kill pathogens colonized or latent in the tree's falling layer and control the incidence of autumn.
Fourth, the implementation of comprehensive supporting measures Hanging gold moth, apple leaf roller moth and other pest traps, installation of insecticidal lamp orchards, pay attention to promptly replace the wick, clean up traps or insect traps in the insect pocket. In the middle or late August, the trunk or large branches of fruit trees are bundled with traps. Combine the summer cuts and remove the dense branches and cross branches. Strengthen the management of fertilizer and water.