Avoid using long after the preparation. It is best to use the lime sulfur mixture that has been made in one time, otherwise the efficacy will be reduced. Do not look at fruit tree species and fertility stages when applied. Some fruit trees are more sensitive to sulfur, and blind use can cause phytotoxicity. Such as peach, plum, pear and other fruit trees should not use lime sulfur. Do not use lime sulfur after fruit tree coloring, otherwise it will cause a lot of fruit drop. Avoid excessive concentrations. The concentration of lime sulfur used in the orchard should be determined according to the climatic conditions and the objects to be controlled, otherwise it is easy to produce phytotoxicity. In winter, the temperature is low and the plants are in dormant stages. The use concentration can be higher. In summer, the temperature is high and the use concentration should be lower. It is generally 3-4 degrees during the dormant period of fruit trees and 0.3-0.4 degrees during the prosperous period of fruit trees. Avoid mixed use. Lime-sulfur mixture is an alkaline pesticide and cannot be mixed with organophosphorus pesticides and other bogey pesticides. Otherwise, it will neutralize acid and alkali to reduce its efficacy. Nor can the lime sulfur mixture be mixed with the copper pesticide. Avoid long-term use. Long-term use of lime sulfur will make the pest resistant, and the higher the concentration, the faster the resistance will form. Therefore, lime sulfur should be used interchangeably with other pesticides. China Agricultural Network Editor
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