Matters needing attention in using grape medicine

The high temperature in summer is the season when diseases and insect pests are rampant, and the grape harvest is approaching at this time. If we do not do a good job in the prevention and control of diseases and insect pests, it will easily lead to a reduction in production and seriously affect the income. But in the chemical control, the use of pesticides should be scientific and reasonable, so as not to play a counterproductive, so what should grape drugs pay attention to? Let's get to know it.

1. Symptomatic medication

For grape diseases throughout the growth period of different accurate use of the corresponding control agents, such as black pox prevention drugs can use Bordeaux liquid, chlorothalonil and so on, after the disease can be treated with Fuxing, Xiansheng and other drugs. Downy mildew can be prevented by fierce killing and ethyl aluminum, metalaxyl + mancozeb can be sprayed after onset, anthrax can be prevented by methyl thiophanate and carbendazim, and thiram and bacillus can be treated after onset. Botrytis cinerea can be prevented by promethazine and Sukeling, and pesticides such as Shijiale and Luheng No. 5 can be used to treat the disease.

2. Timely use of medicine

According to the characteristics of Rain Water in the growth period, the prevention and control of grape drug damage should be used in time before and after rainfall, which can get twice the result with half the effort. Spray before rain should choose internal absorption and water-resistant protective drugs, such as Shibaolin, methyl thiophanate, carbendazim and so on, and therapeutic drugs such as Tuibute, thiram and so on after rain. The more timely the medicine is sprayed after heavy rain, the better the prevention and control effect will be.

3. Scientific mixed use of medicament

There are many kinds of diseases and insect pests in grape, and there are many kinds of agents and times of drug use. in order to save time and effort, growers often mix the agents together, which not only saves time, but also improves the efficacy effectively. However, if we do not master the scientific principle of mixed use, it may not only reduce the efficacy, but also cause drug damage, such as leaf curling and spots, reducing photosynthesis, resulting in lack of synthetic nutrients, which is not conducive to yield.

4. Alternate use of drugs

The fungicides that are easy to produce drug resistance should not be used continuously, and most of the fungicides used to control grape diseases will produce drug resistance, especially in the rainy south, the number of agents and spraying used to control diseases is more than twice as high as that in the north. Repeated use of the drug will reduce the effect of the drug, so in order to reduce drug resistance and enhance the control effect, each pesticide should be used alternately with other pesticides, and it is recommended that it should not be used more than 3 times during the whole growth period.

The above is the introduction of grape medicine, hope to help you, want to know more related knowledge, please follow us.