The treatment of gray mold in the shed is matched with different pesticides at that time.
Gray mold often occurs when the weather is cold. This stage is also the time to prevent and treat the disease. In the treatment, the pesticides used should be matched with each other, and the treatment effect will be better.
Nowadays, many pesticides such as boscalid and azoxystrobin are very common, but the effect is getting less and less satisfactory. Some of the older and compounded pesticides have better effects. Since a new type of pesticide has just been used by vegetable farmers, the bacteria have little resistance to it and the control effect is good, but it is too superstitious for a single agent, and it is easy to cause the resistance of the bacteria to cause the resistance of the pesticide. For example, procymidone and pyrimethanil are greatly reduced in the use of vegetable farmers for several years, which is also a reason for the rapid replacement of gray mold drugs. In addition, the systemic effect of the systemic drug is good, but it is easy to produce resistance, and the protective agent is not suitable for resistance, but only has a preventive effect.
China Pesticide Network Xiaobian teaches you how to use pesticides:
First, there is no cross-resistance pesticide mixing or rotation, such as carbendazim and immortalization without cross-resistance, the compounding agent is effective in controlling gray mold, while boscalid, pyrimethanil, fluorine There is no cross-resistance between the pyridines, but there are few agents for compounding on the market. Single use will speed up the resistance of the bacteria, and it is recommended to rotate.
The second is the use of systemic pesticides and protective pesticides. The systemic agents for controlling gray mold are mainly procymidone, pyridine oxazole, boscalid, pyrimethanil, fluazinam, etc. The protective agent for mildew can be used with fludioxonil, fungicide chlorothalonil, thiram, etc., and when the pesticide is used, the two can be used together, so that it can treat the disease that has already occurred, and can prevent further infection of the bacteria, and the control effect better.
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