Is there any way to improve the efficacy of fungicides?

Is there any way to improve the efficacy of fungicides? Please introduce the following methods to improve the efficacy of fungicides: Reasonable configuration of different concentrations of fungicides have special requirements for their use concentration, configuration concentration must be strictly in accordance with the "instructions for use" operation, can not be arbitrarily increased or reduced. Too late or too early spraying time will affect the control effect. According to the occurrence law and specific situation of different crop diseases, timely application of drugs should be carried out. It is usually best used before the onset of disease (protective medication) or early in the onset of disease (prevention). Master the number of times of pesticide spraying is mainly based on the duration of the pesticide and meteorological conditions to determine. Generally spray once every 10~15 days, a total of 2~3 times. In case of special circumstances, such as rain after application, it should be sprayed once in time. To improve the quality of medication, the quantity of medication should be appropriate. Too much medication will increase the cost and easily cause harm, while too little medication will not achieve the purpose of medication. The quality of medicine should be particular about, spray evenly when spraying, and strive not to miss spray. There are many reasons for strictly preventing phytotoxicity caused by fungicides. Firstly, the pesticides with strong water solubility are easy to cause phytotoxicity. Secondly, the sensitivity of different crops to pesticides is different. For example, Bordeaux mixture generally does not cause phytotoxicity, but crops sensitive to copper will also cause phytotoxicity. Beans, potato and cotton were sensitive to sulfur and lime mixtures. Moreover, different growth and development stages of crops have different responses to pesticides, and generally seedlings and booting flowering stages are easy to produce phytotoxicity. In addition, the general high temperature and drought, strong sunshine or fog, high humidity and other conditions easy to cause crop phytotoxicity. Many fungicides are alkaline pesticides, so they should not be mixed with pesticides that are easy to decompose and fail in case of alkaline substances, such as Bordeaux mixture and stone sulfur mixture. There are also some fungicides such as carbendazim can not be mixed with Bordeaux mixture, stone sulfur mixture, thiophanate and other fungicides, the same will cause insecticidal (bacteria) microorganisms to lose physiological activity and insecticidal (bacteria) ability and failure. Avoiding resistance There is also the problem of resistance to crop diseases when using fungicides. In order to avoid disease resistance, on the basis of scientific selection of pesticides, alternate (rotation) use of different types of pesticides should be done effectively, and it is strictly prohibited to use one pesticide alone for a long time. Click for more fungicide application techniques Click for more pesticide application techniques