In recent years, with the development of the vegetable and flower market, various vegetable and flower diseases are prone to prevalence. Especially in the hot summer, it is one of the most difficult. It is a dangerous period of vegetable and flower production. The high temperature, drought or high temperature and high humidity often cause various vegetable pests and diseases to occur frequently. At this time, how to use the fungicide scientifically, reasonably and correctly is extremely important. Now collect some information for your reference:
1 use pesticides fungicides must first look at the control object, the right medicine. For example, the prevention and control of vegetables and flowers (turf) rust can not use carbendazim, but use rust-proof, chlorothalonil and other agents, because carbendazim is not ideal for the control of some vegetables, especially for flowers (turf). .
2 The use of pesticide fungicides depends on its content. In the use of the drug, different concentrations of the same fungicide use different concentrations, 50% carbendazim wettable powder diluted 500 times, can prevent snake eye disease, powdery mildew and other diseases, and have better results, and more than 25% The fungicidal wettable powder is diluted 250 times. Therefore, in order to reduce unnecessary loss and waste, its effective content should be observed before use.
3 use pesticide fungicides to seize the opportunity. As we all know, the occurrence and development of vegetable and flower pests and diseases is very time-sensitive, and plant protection work should be based on prevention, supplemented by treatment, especially diseases . Therefore, we must seize the opportunity to control pests and diseases at the lowest point to achieve twice the result with half the effort. Powdery mildew and anthracnose, such as leafy vegetables, must be used in the early stage of the disease to control the bacteria and stop spreading.
4 The use of pesticide fungicides should alternate with each other. Long-term single use of the same or the same type of fungicide, easy to make the bacteria resistant, can not achieve the expected control effect, resulting in waste or greater economic losses.
5 pay attention to the application time. Generally, the application time is after 4 pm on sunny days, and the application is not applied before and after rain. In the period from April to June, there are many rainy weathers. It is advisable to add surfactants such as agricultural fertilizer and rainwater protection when spraying.
6 Pay attention to the sensitivity of certain pesticide fungicides to vegetables and flowers. For example, when copper-containing pesticides such as DT and Chunlei oxychloride copper are used for rooting, they have certain phytotoxicity to squash, and carbendazim is also susceptible to phytotoxicity when drenched with melon.
7 Use pesticide fungicides to master contraindications, and do not mix them at will. Almost every fungicide has its contraindications, so be sure to figure it out before using it. Tobuzin cannot be mixed with copper preparations, and chlorothalonil cannot be mixed with strong alkaline agents such as stone sulphur.
In addition to this, pay special attention to whether this pesticide is banned and its safety interval. Also pay attention to choose the appropriate method of application.
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