What are the precautions for using lime sulfur mixture?
Which diseases can lime sulfur mixture control? What should be noted when applying lime sulfur mixture? What are the precautions for using lime sulfur mixture? The following brief introduction is provided by Gengzhongbang Planting Network for netizens' reference. Lime sulfur mixture kills pests, diseases and eggs by penetrating and corroding the bodies of pathogens and pests. It is a...
Which diseases can lime sulfur mixture control? What should be noted when applying lime sulfur mixture? What are the precautions for using lime sulfur mixture? The following brief introduction is provided by Gengzhongbang Planting Network for netizens' reference.Lime sulfur mixture kills pests, diseases and eggs by penetrating and corroding the bodies of pathogens and pests. It is an inorganic sulfur preparation that both fungicides and kills insects and mites, and can control powdery mildew, rust, brown rot, brown spot, black spot, as well as red spiders, scale insects and many other pests and diseases. There are the following precautions for using lime sulfur mixture:
1. Do not mix it at will: lime sulfur mixture is an alkaline pesticide and must not be mixed with organophosphorus pesticides or other pesticides incompatible with alkali, otherwise acid-base neutralization will reduce the efficacy. Some people think Bordeaux mixture is also an alkaline pesticide and mix it with lime sulfur mixture. But this method is also inappropriate. Because the two can also undergo a chemical reaction after mixing, which not only reduces the efficacy but also easily causes pesticide damage. In addition, lime sulfur mixture must not be mixed with other copper-based pesticides.
2. Do not use it continuously over a long period: long-term use of lime sulfur mixture will cause pests and diseases to develop resistance; the higher the concentration used, the faster resistance forms. Therefore, lime sulfur mixture should be used alternately with other pesticides.
3. Do not leave it unused for a long time after preparation: boiled lime sulfur mixture is best used up in one go, otherwise its efficacy will be reduced.
4. Do not apply it without considering the fruit tree species and growth stage: some fruit trees are relatively sensitive to sulfur, and blind use will cause pesticide damage. For example, fruit trees such as peach, plum and pear should not be treated with lime sulfur mixture. In addition, lime sulfur mixture must never be used after the fruit trees have colored, otherwise it will cause a large amount of fruit drop.
5. Do not use too high a concentration: the concentration of lime sulfur mixture used in orchards must be determined according to climatic conditions and the target of control, otherwise pesticide damage is likely. In winter, when temperatures are low and plants are in the dormant stage, a higher concentration can be used; in summer, when temperatures are high, a lower concentration should be used. Generally, in the dormant period of fruit trees, 3 degrees--4 degrees lime sulfur mixture can be used, while during the vigorous growth stage only 0.3 degrees--0.4 degrees can be used.
The above is Gengzhongbang Planting Network's introduction to the precautions for using lime sulfur mixture. If you have better additions, please leave a comment below to tell us.