At present, there are many dosage forms of pesticides, some of which have different names but their uses are the same. Some dosage forms have the same use but different methods of use. Pesticide users should decide which dosage form and preparation to choose according to the crop and the control object, the application equipment and the conditions of use.
The efficacy of pesticides in emulsifiable concentrates is significantly higher than that of suspending agents and wettable powders. The same active ingredient of pesticides is preferred to use emulsifiable concentrates. The fungicide for foliar spray, generally in the form of oil as a medium, is not beneficial to the bactericidal effect, because the penetration of the bactericide into the cell wall and cell membrane of the pathogen is a fungicide molecule dissolved in the leaf water film, and does not need The assistance of oily organic solvents may even hinder the diffusion penetration and systemic action of the drug molecules. Therefore, it is preferred to choose a suspending agent or a wettable powder. Herbicides for foliar spray, because of the waxy layer on the surface of weed leaves, emulsifiable concentrates, concentrated emulsions, suspoemulsions and other dosage forms containing organic solvents, wettable powders and suspending agents with good wetting and osmotic action. The dosage forms can also be used; the herbicides applied to the paddy soil or soil in the paddy field are used more in the form of granules and other dosage forms capable of formulating toxic soil.
As an alternative to emulsifiable concentrates, suspending agents are less effective than emulsifiable concentrates, but significantly higher than wettable powders. Since the particles of the suspending agent are much finer than the wettable powder, the various adjuvants contained in the suspending agent facilitate the adhesion of the agent particles to the surface of the living body, thereby improving the efficacy.
The efficacy of pesticides in emulsifiable concentrates is significantly higher than that of suspending agents and wettable powders. The same active ingredient of pesticides is preferred to use emulsifiable concentrates. The fungicide for foliar spray, generally in the form of oil as a medium, is not beneficial to the bactericidal effect, because the penetration of the bactericide into the cell wall and cell membrane of the pathogen is a fungicide molecule dissolved in the leaf water film, and does not need The assistance of oily organic solvents may even hinder the diffusion penetration and systemic action of the drug molecules. Therefore, it is preferred to choose a suspending agent or a wettable powder. Herbicides for foliar spray, because of the waxy layer on the surface of weed leaves, emulsifiable concentrates, concentrated emulsions, suspoemulsions and other dosage forms containing organic solvents, wettable powders and suspending agents with good wetting and osmotic action. The dosage forms can also be used; the herbicides applied to the paddy soil or soil in the paddy field are used more in the form of granules and other dosage forms capable of formulating toxic soil.
As an alternative to emulsifiable concentrates, suspending agents are less effective than emulsifiable concentrates, but significantly higher than wettable powders. Since the particles of the suspending agent are much finer than the wettable powder, the various adjuvants contained in the suspending agent facilitate the adhesion of the agent particles to the surface of the living body, thereby improving the efficacy.
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