1. Buy pesticides should go to the designated pesticide distribution department, such as agricultural technology stations and supply and marketing cooperatives.
2. See if the contents of the pesticide label are complete. Such as pesticide name, pesticide three certificates (pesticide registration certificate, pesticide production license, pesticide production implementation standards), loading, use instructions, precautions, production date or batch number of factory names and detailed addresses, etc., counterfeit biological pesticides are often incomplete.
3. Look at the appearance.
(1), powder, wettable powder, should be loose parts, no agglomerates.
(2) The emulsifiable concentrate should be a homogeneous liquid with no visible foreign matter. If stratification or turbidity occurs, or the milky liquid is uneven after adding water or there are oil slicks, sediments, etc., and can be regarded as inferior pesticides.
(3) The suspending agent should be a flowable suspension without agglomeration.
(4) If the tablet for the fumigant is a powder, it indicates that it has failed.
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