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First of all, we must ensure that the properties of leaf fertilizers and pesticides are stable after mixing. Some foliar fertilizers may combine with pesticides to cause chemical or physical reactions, affecting the effectiveness of fertilizers and medicines and even causing fertilizer damage. For example, the foliar fertilizers containing boric acid and ferrous sulfate are mostly acidic, while the copper preparations such as copper hydroxide are alkaline. If they react after mixing, they will affect each other's effects. Therefore, when the foliar fertilizer and the pesticide are used together, attention must be paid first to the acidity and alkalinity. Also need to test to observe whether there is flocculation, precipitation or discoloration, bubble generation and other phenomena after mixing. If the drug solution has poor performance, it is not suitable for mixing. Even if the physical properties of the liquid medicine are good after mixing, a small-scale test must be performed first to see if it is prone to harm due to fertilizer and then used on a large area.
Secondly, pay attention to the order of adding foliar fertilizers and pesticides when mixing. When a vegetable farmer dispenses a sufficient amount of water, a single dose of the liquid is first dispensed, and then the liquid is diluted with another single dose. Instead of mixing two single agents first, dilute with water to avoid adverse reactions. When mixing, the order of adding foliar fertilizer and pesticide to water is usually as follows: foliar fertilizer, wettable powder, suspending agent, liquid agent, and emulsifiable concentrate are added in turn, and each type is added, and the mixture is thoroughly stirred and then added.
The liquid medicine should be used now. Although some of the foliar fertilizers and pesticides do not have adverse reactions when they are freshly prepared, they tend to produce slow reactions for a long time, which can lead to the loss of fertilizers and medicines and even produce fertilizer damage.
Foliar fertilizer and pesticides mixed need to pay attention to what?
Spraying foliar fertilizer is one of the commonly used extra-root fertilizer methods for vegetable farmers. In the production, the vegetable farmers are mostly spraying foliar fertilizers and pesticides in order to save time. In fact, due to the different nature of various fertilizers and pesticides, if the mix is ​​unreasonable, it will affect the effect of using fertilizers and even produce fertilizer damage. It is recommended that vegetable farmers pay attention to the following aspects when they mix foliar fertilizers and pesticides.