Now, many farmers will inevitably leave pesticides when spraying, and sometimes they will take a long time. The vegetable farmers themselves do not know whether the pesticides have already failed and can still be used. To this end, we will introduce to you how to identify pesticides is easy to use, farmers can check their own identification. 1. powder. Powder in the storage process if the absorption of moisture agglomeration, you need to be placed in a cool well-ventilated place to dry not sun, crushed before use, if the agglomeration is more serious, can only be used for toxic soil. 2. Wettable powders. Take 1 part of the wettable powder, add 200 parts of water, and put it in a glass. Shake well and wait for a certain period of time to observe the suspension. If the drug precipitates slowly, it indicates good suspension. In case of poor quality, silicone additives or 0.10% neutral laundry detergent should be added before use to increase moisturizing performance. If the wettable powder binds to a hard block, it should not be used as a spray. 3. EC. When the emulsion pesticide is stored in the storage process, the following three conditions may occur if the storage is poor. The first is the phenomenon of agglomeration. If the emulsifiable concentrate has been a non-flowable viscous liquid or has formed a soapy solid, it is proved that the solvent has mostly volatilized and the quality has changed and cannot be used. The second is the phenomenon of precipitation and crystallization. For long-term storage of the emulsion, white crystals or turbid substances may appear on the bottom of the bottle. If its cream bottle is immersed in warm water of 30-40°C, the crystals can be dissolved in about 30 minutes to return to a transparent liquid, indicating that the quality is good and can be used. If it does not dissolve, it indicates that the quality of the emulsifiable concentrate has changed and cannot be used. The third is the change in the emulsifying properties of the EC. Take 1 part of EC, add 200 parts of water and place it in a glass. Shake well and wait for about half an hour. Observe the emulsification. If there is no slick in the upper layer, there will be no sediment in the lower layer and no oil bead in the middle, indicating good emulsification performance; There is emulsifiable concentrate, there is sedimentation, there is stratification after 10 minutes, indicating that the emulsion is destroyed can not be used. Absorbent of Carbon Dioxide-Soda lime Co2 Absorbent,Co2 Absorber,Litholyme Co2 Absorbent,Carbolime Co2 Absorbent Zhejiang Hisern Medical Technology Co., Ltd , https://www.hisernmedical.com
Is long-term storage of pesticide vegetables available?