The most commonly used dosage forms in China are emulsifiable concentrates, suspending agents, wettable powders, powders, granules, water agents, poison baits, mother liquors, mother powders, etc. More than ten dosage forms are used by farmers, and crops and control objects, application equipment and use should be used. Conditions to determine which dosage form and formulation to choose are appropriate. Most of the pesticides produced in China are suitable for spraying. The main products are emulsifiable concentrates and wettable powders, and the suspension concentrates have considerable yield. From the pharmacological analysis, these three dosage forms are somewhat different, and should be taken care of when selecting.
First, the efficacy of the pesticide 's emulsifiable concentrate is significantly higher than that of the suspending agent and the wettable powder. The same active ingredient of the pesticide is preferably selected from the emulsifiable concentrate. However, the fungicide for foliar spray and the oil-based dosage form are not beneficial to the bactericidal action, and a suspending agent or a wettable powder should be selected. The herbicide for foliar spraying has a waxy layer on the surface of the weed leaves, and the emulsion containing the organic solvent, the concentrated emulsion, the suspending agent and the like can be selected. Formulations such as wettable powders, suspensions and the like which have good wetting and osmotic action are also available. Herbicides applied to paddy soils or soils are used in granules and other dosage forms that can be used to formulate toxic soils.
Second, as an alternative to the cream, the suspending agent is second to the emulsifiable concentrate, but significantly higher than the wettable powder. Since the particles of the suspending agent are much finer than the wettable powder, the various additives contained in the suspending agent facilitate the adhesion of the agent particles to the surface of the living body, thereby improving the efficacy.
More pesticide knowledge , please pay attention to China Pesticide Network
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