The original drug of the pesticide is generally not directly usable and must be processed into various types of preparations before it can be used. The type of preparation is called a dosage form, and the commercial pesticide is sold to the user in the form of a certain dosage form. The most commonly used dosage forms in China are emulsifiable concentrates, suspending agents, wettable powders, powders, granules, water agents, poison baits, mother liquors, and mother powders.
Different dosage forms are used in different ways. So, how do different pesticide formulations be correctly selected? Today, China's pesticide network Xiaobian summarizes some commonly used methods and rules.
The efficacy of pesticides for different pesticide formulations is significantly higher than that of suspending agents and wettable powders. The same active ingredients for pesticides are preferred to use emulsifiable concentrates; fungicides for foliar sprays are generally sterilized with oil-based formulations. The function is not beneficial, because the penetration of the fungicide into the cell wall and cell membrane of the pathogen is a fungicide molecule dissolved in the leaf water film, and does not require the assistance of the oily organic solvent, and even hinders the diffusion and penetration of the drug molecule. Systemic action. Therefore, it is advisable to choose a suspending agent or a wettable powder; a herbicide for foliar spraying, a waxy layer on the surface of the weed leaf, an emulsion containing an organic solvent, a concentrated emulsion, a suspoemulsion, etc., can be selected and have good wetting. And osmotic wettable powders, suspensions and other dosage forms are also available; herbicides applied to paddy soil or soil are used in granules and other dosage forms that can be used to formulate toxic soils.
Finally, the Chinese pesticide network Xiaobian warm reminder: as an alternative to the cream, the efficacy of the suspending agent is second to the emulsifiable concentrate, but significantly higher than the wettable powder.
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