Plant-derived repellent for maladera orientalis motschulsky and preparation method thereof

Abstract

The invention discloses a plant-derived repellent for maladera orientalis motschulsky and a preparation method thereof. The plant-sourced repellent is prepared from, by mass, 1-45% of wheat straw ethanol extraction dry powder, 10-30% of a solvent, 5-10% of an emulsifier, 0.1-1.5% of a defoaming agent, 0.3-5% of other auxiliaries and the balance water. The preparation is an emulsion in water, the use quantity of the organic solvent is small, the repellent is environmentally friendly and is a pollution-free plant-derived pesticide, the raw materials are easy to obtain, the resources are abundant, the cost is low, the waste is turned into treasure, and the wheat straw resources are comprehensively utilized; the requirement of the repellent for processing equipment is low, the processing technology is simple, and good popularization prospects are provided. The repellent can be used for repelling prevention and control of scarabs on fruit trees and forest trees. The repellent has the advantages of being high in repelling activity, environmentally friendly, unlikely to generate resistance and the like.

Description

technical field [0001] The invention relates to the field of botanical pesticides, in particular to a botanical repellant for the black velvet beetle and a preparation method thereof. Background technique [0002] Black velvet beetles, also known as velvet beetles, oriental beetles, and black velvet beetles, belong to Coleoptera and Beetleidae. It is a multi-host pest that feeds on most fruit tree varieties in northern my country, such as apples, pears, cherries, hawthorns, peaches, etc. . It mainly feeds on the young leaves and shoots of fruit trees with adults, and it is more harmful in newly developed orchards, especially in the North China Plain and the Loess Plateau, and often causes serious harm to young trees. Our preliminary survey found that in the newly developed apple orchards, pear orchards and cherry orchards in the plains of Shandong, the Luliang Mountains of Shanxi, and the gully areas of the Loess Plateau, the black velvety beetle caused 80-100% damage to the...

AI Technical Summary

Problems solved by technology

The review of the existing literature shows that the intercropping of wheat in the orchard can repel the black velvet beetle, but because the saplings of the fruit trees require a lot of fertilizer and water, the intercropping of wheat will not only affect the growth of the saplings of the fruit trees, but also affect the field of the orchard. operate

Further searches showed that there were no research reports on the repellence of wheat straw extracts to the black velvet beetle, and no related patents were published

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