Six Misunderstandings of Grape Disease Prevention and Control

Retreatment does not prevent many diseases. Many diseases often begin to rush to apply effective therapeutic agents after obvious symptoms occur. However, therapeutic agents produce varying degrees of drug resistance due to repeated use for a long period of time, resulting in the prevention of disease. Constantly worsening, making the disease more difficult to control. Protective agents can play a good role in controlling the origin of the disease and protecting the plants, and they do not produce the resistance of pathogens. The prevention of such agents is often overlooked.

When there are many diseases, chaos and confusion do not discriminate the types of diseases, and do not understand the targeted nature of chemical control. It is only to save the use of pesticides and achieve the purpose of one work and multiple effects. At present, some commercial drugs on the market are themselves compounded, which in turn causes the bacteria to produce multi-drug resistance. It is simply not valid to change to other drugs.

Weight is not heavy, that is, the number of medications is emphasized, and the quality of the medication is neglected. The disease occurs frequently, once every 7 to 15 days, or once after the rain. Many farmers follow this rule, but often the medication is not in place. The phenomenon. For example, if downy mildew does not focus on spraying leaves, and black pox does not focus on spraying the young part of the plants, when sprayed with protective agents, it will not be thoughtful or comprehensive, leaving many dead ends and causing recurrence of diseases.

Heavy fruit light prevention leaf disease prevention tends to attract attention, and the disease on the leaf is often overlooked. The phenomenon of large number of fallen leaves caused by downy mildew is common in production.
After harvesting the fruit, the fruit is lightly harvested before it is harvested, but it is not managed after the fruit is harvested, resulting in a large number of late-stage diseases and early leaf failure, which seriously affects the grape yield in the second year.

Emphasis on chemical prevention and control Neglect of integrated prevention and control The emphasis on spraying and prevention of pesticide production and ignoring comprehensive cultivation measures, the occurrence of grape disease is closely related to the ventilation and light transmission inside and outside the rack, the fertility of the soil, and the strength of the tree vigor. Fundamentally solved. Therefore, in the prevention and treatment of grape diseases, we should adhere to the principle of prevention, symptomatic use of drugs, rational blending of the principles of scientific drug use, and through comprehensive measures to enhance fertilizer and water, improve lighting, and enhance tree vigor to achieve a multiplier effect of prevention and control.

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