Right now is the golden season of spring farming production, which is also the peak period for farmers to buy agricultural materials. However, in the agricultural resources market, fisheyes are often dazzling and difficult to distinguish between authenticity and authenticity. How to choose the right agricultural resources is the key to ensure the smooth development of spring farming. Recently, when the reporter interviewed the executive director and agronomist Chen Lin of Shaanxi Provincial Plant Protection Society, he gave a detailed introduction on the identification of superior and inferior pesticides. In response, the reporter organized and hoped to help the majority of farmers.
Packaging inspection
According to national regulations, corrugated cardboard with moisture barriers should be used for the packaging of pesticides. The outer packaging container shall have a label, and the name, type, specification, gross weight, net weight, production date, batch number, storage and transportation indicator, toxicity label, and manufacturer's name shall be indicated on the label. At the bottom, there should also be a colored marking strip parallel to the bottom edge, indicating the type of pesticide. The pesticide packaging container must have a certificate of conformity and instructions. Liquid pesticide formulations should not exceed 15kg per box, and solid pesticide formulations should not exceed 25kg per bag.
Inner packaging inspection
Pesticides must be firmly affixed to the inner packaging or directly printed on the small package. The pesticide label has the legal effect. If the user applies the medicine according to the method of use on the label of the pesticide, there is no drug effect, or even a phytotoxicity occurs, the manufacturer should take full responsibility.
Shelf life check
Pesticides and shelf life are generally two years. Expired pesticides must undergo quality analysis of the active ingredients through the quality supervision department. The efficacy and phytotoxicity tests prove that only the efficacy is reduced, and no other toxic or side effects are allowed to lower the price. If it has deteriorated, it must never be sold again.
Different product appearance characteristics
Different formulations of pesticide products have a certain appearance characteristics, the most common pesticide formulations are emulsifiable concentrates, powders, wettable powders, granules, water and suspension agents. After unpacking, quality can be identified from the appearance of the pesticide.
Emulsifiable concentrates should be free from sediments or suspended matter. If there is stratification and turbidity, or the emulsion is diluted with water, the emulsion is not uniform, there are slicks and sediments, which all indicate that the product quality may be problematic.
Powders, wettable powders, and wettable powders should be loose powders without lumps. If there is agglomeration or more particles, it indicates that it has been affected by dampness. Not only does the fineness of the product fail to meet the requirements, but its active ingredient content may also change. If the color of the product is uneven, it also indicates that there may be quality problems.
The granules are uniform in size and color, free of dust, loose in drying, and the pellicle adheres firmly to the granules and is not easy to fall off and decolorize;
The appearance of the agent is uniform and transparent liquid, no stratification and sedimentation, and it can be dissolved in water after dipping, and there is no obvious insoluble substance.
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