Mixed pesticides four taboos
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Second, acid and alkaline pesticides can not be mixed. Commonly used pesticides are generally classified into three categories: acidic, alkaline and neutral. Fluoride, sodium arsenate, etc. are neutral pesticides. Copper sulfate, sodium fluorosilicate, chalk, and superphosphate are acidic pesticides. Rosin mixture, stone flow agent, Bordeaux mixture, aluminum arsenate, soap, lime, lime nitrogen, etc. are alkaline. When the acid-base pesticides are mixed together, they will decompose and destroy, reduce the efficacy, and even cause phytotoxicity. Most organophosphate insecticides such as dimethoate, chlorpyrifos, malathion, ammonium phosphate, etc. and some microbial pesticides such as chunremycin, jinggangmycin, chlorfenapyr, and pig rice net, daisen zinc, With ammonium, etc., can not be mixed with alkaline pesticides. The above pesticides should not be sprayed after the crops are applied with lime or grass ash.
3. The pesticide that has been destroyed by the emulsion after mixing cannot be used. Calcium-containing pesticides such as calcium arsenate, stone flow agents, calcium methyl arsenate, and the like. Generally, it cannot be mixed with emulsion pesticides, and soap cannot be added. Because emulsifiable concentrates and soaps are easily chemically reacted with calcium-containing agents, calcium soap precipitates. The emulsion is destroyed, the efficacy is reduced, and phytotoxicity occurs.
Fourth, fungicide pesticides can not be mixed with microbial pesticides. The fungicide has a direct killing effect on microorganisms, and if the mixed microorganism is killed, the microbial pesticide is thus ineffective.
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East Magnet Co., Ltd. , http://www.nbferritemagnet.com