Insecticidal composition for preventing and controlling rice water weevil, uses thereof and method for producing aqueous emulsion

Abstract

The invention relates to a pesticide composition preventing and controlling rice water weevil of the rice, the application of the pesticide composition and the preparation method of the emulsion in water. Mass percentage of the content of each ingredients is as following: active ingredient A: 0.2-20%; active ingredient B: 0.7-75%; surface-active material: 0-14%; the rest mass is one or more than one of the carrier, water, organic solvent, thickener, stabilizer, anti-freezer, defoamer or agglomerant, wherein, the active ingredient A is fipronil; the active ingredient B is one of chlorpyrifos, dipterex, dichlorvos, triazophos, profenofos, carbosulfan, fenobucarb, isoprocarb, hexaflumuron, flufenoxuron, imidacloprid or acetamiprid. The pesticide composition has the advantages of delaying drug resistance of the pests, reducing the consumption cost of the pesticide, having excellent effect of killing rice water weevil and the highest disinfestation effect up to 99%.

Description

Technical field [0001] The invention relates to an insecticide for preventing and curing crop pests, especially an insecticide for preventing and treating rice water weevil, and its preparation and application. Background technique [0002] The rice water weevil (Lissorhoptrus oryzophilus Kuschel) is native to North America and is a species of insect unique to the New World. It feeds on plants that grow in moist areas such as wild grasses and Cyperaceae. In the second half of the 19th century, the states of Arkansas, Mississippi, Louisiana, and Texas in the Mississippi River Basin in the United States began to grow rice on a large scale. The rice water weevil turned into an important pest on rice and gradually spread south to Mexico, Cuba and Dominica and other places. In 1959, the rice water weevil invaded the Sacramento Valley of California, USA, and it was parthenogenetic; it expanded to various rice regions throughout California 10 years later. So far, the rice weevil has spr...

AI Technical Summary

Problems solved by technology

The domestically registered pesticides mainly used to control rice water weevil include 10% etofenprox suspension concentrate, 0.3% fipronil granule and 4% etofenprox oil, but the control effect is not very satisfactory, and pests are prone to produce resistance. Defects in drug properties, or there is a large amount of medication and high cost of use

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