Pesticide mixed with "three bogeys"

After the pesticides are mixed, pesticides that cause chemical harm due to chemical reactions can not be separately applied with Bordeaux mixture and lime sulfur, and they can prevent and cure various diseases. However, they chemically change soon after mixing and produce dark brown copper sulfide deposits. This not only destroys the original bactericidal capacity of the two agents, but also produces copper sulphide that will further produce copper ions, causing the plants to defoliate, drop fruit, burn spots on the leaves and fruits, or serious injury phenomena such as dry shrinkage.

Acid and alkaline pesticides can not be mixed with commonly used pesticides are generally divided into acidic, alkaline and neutral three categories. Lead fluoride, sodium arsenate, etc. are neutral pesticides. Copper sulfate, sodium fluorosilicate, white peony, and superphosphate are all acidic pesticides. The rosin mixture, lime sulfur, Bordeaux mixture, aluminum arsenate, soap, lime, and lime nitrogen are alkaline. The combination of acid and alkaline pesticides will break down, reduce efficacy, and even cause phytotoxicity. Most organophosphorus insecticides such as dimethoate, kaempferol, malathion, ammonium phosphate, etc., and some microbial pesticides such as kasugamycin, jinggangmycin, quercetin, etc., as well as porcine rice net and mancozeb With ammonium, etc., can not be mixed with alkaline pesticides. After spraying the crops with lime or ash, the pesticides cannot be sprayed.

Damaged pesticides after mixing cannot use calcium-containing pesticides such as calcium arsenate, lime sulfur, calcium methyl arsenate, etc. Generally, they cannot be mixed with emulsion pesticides, nor can soap be added. Because creams and soaps chemically react with calcium-containing agents, calcium soap precipitates. Emulsions are destroyed, efficacy is reduced, and phytotoxicity occurs.

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