1 , avoid using well water dispensers . Well water contains more calcium, magnesium and other minerals , which react with the liquid easily precipitate , thus reducing the efficacy.
2 , avoid sewage Pharmaceuticals. Sewage containing impurities, after dispensing spray nozzle clog back pack sprayer , while also undermine the stability of the liquid , reduce the efficacy.
3, avoid rain days and high temperatures spraying. Windy spraying pesticides will drift ; rain spraying , liquid rain washed easily reduced efficacy ; temperatures spraying, prone to injury and poisoning. Therefore, the best time of application lies in : 8:00 to 11:00 , 16:00 to 6:00 . Weather permitting , the breeze when spraying.
4, avoid misuse of pesticides. Should be based on crop type , control objects and agents using the corresponding properties of different pesticides , so that the right medicine , and contraindications blindly increase the amount of pesticide , resulting in increased resistance to pests and reduce the control effect , but also prone to injury.
5, avoid spraying flowering . Spraying of crops and fruit trees in bloom , prone to injury .
6 , avoid preharvest trigger sprayer spraying. Since pesticide residues in crops to produce , if preharvest spraying, drug residues easily lead poisoning after eating people .
7 , avoid a medicine used in conjunction . Long-term use of one or formulations of pesticides , easy to make pest control effect and reduce resistance and therefore should alternate medication.
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