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What to pay attention to when mixing pesticides?
Release time:
2022-08-11
In winter, diseases in greenhouse environments are prevalent, leading to frequent pesticide applications. Many vegetable farmers mix various pesticides in order to reduce the number of applications and lower labor intensity. However, with too many types of pesticides, problems can easily arise during mixing, requiring special attention. So, what should be considered when mixing pesticides?
Diseases are prevalent in winter greenhouses, and the frequency of spraying is high. Many vegetable farmers mix various pesticides to reduce the number of sprays and lower labor intensity. However, with too many types of pesticides, problems can easily arise during mixing, which requires special attention. So, what should be noted when mixing pesticides?
First, the order of mixing pesticides must be accurate. Most vegetable farmers do not know which agent to add first when mixing pesticides. Sometimes they add foliar fertilizer first, sometimes they add emulsifiable concentrate first, and sometimes they add wettable powder first, picking whichever one to add. This is unreasonable. Many prepared pesticides have precipitated because of this.
The usual order for mixing foliar fertilizer and pesticides is: foliar fertilizer, wettable powder, suspensions, water-based agents, and emulsifiable concentrates, added in sequence. Each time one is added, it should be fully stirred and mixed before adding the next.
Second, add water first and then the pesticide for secondary dilution. Currently, many vegetable farmers mix pesticides by adding all the pesticides into the sprayer and then diluting with water, which is incorrect.
Mixing pesticides is not as simple as just combining them together. When mixing, you can first add a large bucket of water to the sprayer, mix in the first pesticide; then, dilute the remaining pesticides in a plastic bottle, and after dilution, pour it into the sprayer and mix well, and so on.
Third, spray immediately after preparing the mixture. Many times, vegetable farmers prepare the pesticide at home and then transport it to the greenhouse for spraying. Often, the mixture has been prepared for several hours. Although the solution does not react immediately after preparation, it does not mean it can be left for a long time; otherwise, it may undergo slow reactions, gradually reducing its efficacy.
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