Pendimethalin and alachlor binary complex herbicide and preparation method thereof

Abstract

The invention provides a pendimethalin and alachlor binary complex herbicide and a preparation method thereof. The herbicide comprises the following components by mass: 15-45% of pendimethalin, 5-25% of alachlor, 5-15% of synergist, 8-20% of emulsifier and the balance solvent. The preparation method comprises the following steps: mixing and stirring the pendimethalin and the solvent according to the mass ratio; mixing and stirring the alachlor and the solvent; mixing and stirring the mixtures; adding the emulsifier together with the synergist to a reaction kettle to be stirred for 10-15min; then adding the balance solvent and stirring the mixture for 20-30min; and then carrying out standing, filtering, filling and sampling analysis, thus obtaining the finished product. The herbicide has high efficiency and broad spectrum, is used for pre-emergence soil spraying after sowing such crops as soy beans, peanuts, garlic, cotton and the like, can realize that the crops are free from weeds in the whole growth period through one-time application of 120-180g per mu and has application cost 31.4-36.8% lower than that of the single pendimethalin or alachlor respectively.

Description

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AI Technical Summary

Benefits of technology

In this new type of chemicals called sulfone compounds (S), which were discovered by researchers at Cornell University's School of Agriculture near New York City when they tested them against certain plants found similar properties but without being effective or causing any negative side effect). These S compound have been shown to be very useful because they work well with various crop species including corn, rice, wheat, barley, rye, sorghum, sugarcane, sunflower seeds, peanuts, citrus fruits, vegetables like spinaches, melons, watermelon, grapevines, tea leaves, etc., resulting in reduced use over time while also controlling unwanted plant populations such as grasses and insects.

Problems solved by technology

The technical problem addressed by this patented technology relates how to control unwanted vegetation during crop production without damaging it throughout its entire life cycle or even causing harmful effects on other plants nearby when used alone for some time after plant emergency occurs (such as drought).

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