The main role of the main control of red spider mite disease, apple leaf roller moth and ring spot disease, while also aphids, rust, powdery mildew, deciduous spot disease. Second medication after Xiehua The main role of young fruit and flower protection from ringworm pathogens, fungal disease and black spot pathogen infection, while a variety of aphids, rust, spotted deciduous disease, rot, cotton bollworm, red spider, Cornell mealybugs and so on. 10-15 days after the first dose of medication time. Medication considerations prevention of disease, pest control, cockroach eradication, calcium supplementation at the same time. One kind of fungicide, one kind of insecticide, one kind of anti-caries agent and one kind of calcium supplement agent can be mixed and used. If there is no effective rainfall after the first medication, a longer-lasting protective bactericide may be used. Otherwise, a bactericide with a therapeutic effect of internal absorption may be used. As the apple enters the growing season, a large number of natural enemies begin to appear. Pesticides are recommended to use highly specialized agents. Broad-spectrum insecticides such as pyrethroids and organophosphate insecticides are not recommended. In cases where natural enemies can control pests, try not to use insecticides. Apple pre-bagging medication The main role is to protect the fruit from bagging and damage from pests, and to eradicate some infected bacteria. Pests and diseases that focus on prevention and treatment include ringworm disease, black spot disease and aphids, as well as concurrent treatment of golden thread moths, acarids, anthracnose leaf blight, brown spot disease, spotted leaf disease, rot disease and so on. Medication considerations prevention of disease, pest control, extermination, killing, calcium supplementation at the same time. One kind of fungicide and one kind of insecticide can be used, mainly based on longer potency. After the last medication, if there is no effective rainfall, a protective bactericidal agent with a longer effective period may be selected. Otherwise, a bactericide with internal suction treatment should be selected. For an orchard with serious damage to the anthracnose leaf blight, a fungicide containing pyraclostrobin as the main effective ingredient is required. If the aphid has a serious damage tendency, add imidacloprid, and consider when the spider has exceeded 2 head/leaf control indicators. Mixed acaricides. The problem of pest control before apple bagging Principles of application The apple young leaves are very sensitive to the external chemical stimuli before the apple is grown until it is bagged. Improper use of the drug will cause phytotoxicity, such as rust, black spot disease, serious physiological fruit drop, and poor fruit growth. Therefore, the principle of “broad spectrum, high efficiency, safety first†should be followed before bagging. Try to use agents with high dispersion, good suspension, wide bactericidal spectrum, strong killing power, good compatibility, and low irritation, and no addition of any synergist. Do not use complex formulations of Bordeaux mixture, copper preparations, hydrogen peroxide, sulphur, or thiram; use of inferior mancozeb and organophosphorus insecticides is recommended, as this can increase fruit rust, physiological fruiting, or produce phytotoxicity. The use of triazole bactericides is not recommended so as not to affect the growth of young fruit and young leaves, and should be applied at most once in case of necessity. Mix up to no more than 5 types of agents. Spraying technique Spraying process requires moderate mechanical pressure and good atomization. Replace the new spray film regularly and keep it away from young fruit. When the fungicide is sprayed, special care is taken to take care of the young flower's flower parts, branches, and saw cuts to reduce the infection of mildew, rot, and ringworm. Organic Monk Fruit Extract is a 100% natural powdered extract made from organic monk fruit. It is a unique alternative to sugar and artificial sweeteners.
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First medication after Xiehua
The time of application is 7 to 10 days after the flowering. The time of treatment is mainly determined based on the type of fleas, and the orchard dominated by hawthorn leaves is the best for 7-10 days after flowering. The apple orchard, which is the main pest of apple, is used for 3 to 5 days in advance.
Medication considerations prevention, pest management, killing, calcium supplementation at the same time. One to two fungicides, one insecticide, one acaricide and one calcium supplement can be mixed. If there is no rainfall during the flowering period, a protective fungicide with a longer effective period may be selected. Before and after the flowering period, if there is an orchard with low temperature, rain, or severe mycotic disease, a therapeutic agent should be used in combination to add a special control agent for mycotic disease. Such as multi-resistant antibiotics (Polaroid), mothionine and so on. In orchards with severe rust or powdery mildew, agents that prevent rust and powdery mildew, such as thiophanate-methyl and difenoconazole, should be considered.
The medication time is sprayed within 1 to 3 days before bagging, and the solution can only be bagged after drying.
There are many types of diseases and pests in apple orchards, which need to be comprehensively considered in the prevention and control of pests and diseases. Otherwise, they will miss out on each other. Not only is the amount of pesticides used large, but it is difficult to effectively control all pests and diseases. According to the types of local pests and diseases, rainfall duration, phenological period, management level, and medication habits, fruit farmers can adjust the number of medications, the time of medication, or the type of pharmaceuticals in order to adapt to local conditions and ensure the use of drugs in critical periods. With the least amount of pesticides, it can effectively control the damage of various pests and diseases, and gradually improve the orchard's ecological environment. The pest control of apple after flowering until bagging is very critical. For this reason, based on Apple's management experience and prevention methods of pests and diseases, combined with its own research, the author proposes the following solutions for the number, types and precautions of medication.