Lime sulfur, chemically known as calcium polysulfide, is an ancient bactericide, insecticide, and acaricide that is very effective against many pests and diseases. Lime sulfur needs to be diluted with water, so how much water can 400 grams of 45% lime sulfur be diluted with? Let's find out.
How much water can be mixed with 400 grams of 45% lime-sulfur mixture?
400 grams of 45% lime sulfur solution can be diluted 200-300 times, therefore it can be diluted with 150-240 catties of water. When spraying to clean orchards, the higher the temperature, the better the effect. Use with caution when the temperature reaches above 32℃, and the dilution ratio should be increased to over 1000 times. Do not use when the temperature is above 38℃.
Precautions for using lime sulfur mixture
1. Do not mix and match indiscriminately.
Lime sulfur is an alkaline pesticide and should not be mixed with organophosphorus pesticides. Mixing them can easily cause a reaction, reducing the effectiveness of the pesticides and even leading to phytotoxicity. Lime sulfur should also not be mixed with copper-based pesticides, such as copper sulfate and copper hydroxide.
2. Pay attention to concentration.
The concentration of lime-sulfur mixture should be adjusted according to the time of day. During periods of low temperature, the concentration can be appropriately increased. During periods of high temperature, the concentration should be decreased; otherwise, phytotoxicity can easily occur.
3. Sensitive crops
Rosaceae plants such as peach, plum, and pear, as well as legumes such as Bauhinia and Albizia, are sensitive to lime sulfur and should be used with caution during the growing season and flowering period.
4. Avoid prolonged use.
Long-term use of lime sulfur can easily lead to resistance in pathogens and pests, resulting in decreasing efficacy and requiring increasingly larger dosages. Therefore, it should be used alternately with other pesticides.
5. Avoid skin contact
Lime sulfur is highly corrosive; protective clothing should be worn during use, and skin contact should be avoided as much as possible. Protective clothing should be worn when preparing and applying the pesticide, and the whole body should be washed after spraying.
