Method for preventing holotrichia parallela by using sex attractant

Abstract

The invention discloses a method for preventing the holotrichia parallela by using a sex attractant. When the adult of the holotrichia parallela come up out of the ground, and the sex attractant is used in four phases, wherein the ratio of L-isoleucinemethyl ester and R-linalool which are the active components of the sex attractant is 6:1 to 12:1 in the first stage, 4:1 to 10: 1 in the second stage, 2:1 to 8:1 in the third stage and:2:1 to 4: 1 in the fourth stage. The ratio of the components of the sex attractant more conforms to the actual condition of the holotrichia parallela group in the fields of most regions of the northern part of China, the utilization rate of the sex attractant is improved, the cost is lowered, the sex attractant has an obvious effect, the problem that the attracting effect of the sex attractant is poor in the later stage of the mating period of the holotrichia parallela is solved, and the damage of the holotrichia parallela to the crops in the field is effectively controlled and reduced.

Description

technical field [0001] The invention relates to a method for controlling pests, in particular to a method for efficiently controlling black beetles using a sex attractant. Background technique [0002] The dark gill beetle Holotrichia parallela belongs to Coleoptera Coleoptera gill beetle family Melolonthidae, its larvae account for more than 70% of the total underground pests, and it is a dominant species that harms peanuts, corn, sweet potatoes, soybeans and other crops. Taking peanuts as an example, the damaged peanuts generally reduce production by 20% to 30%, and in severe cases, the production is reduced by 60% to 70%, or even no harvest. Due to its high concealment and strong adaptability, traditional chemical control methods are not effective, and there are problems of high residue, drug resistance, and environmental pollution. [0003] The use of sex attractants to control pests is a new pest control technology developed in recent years. Since this technology does ...

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Problems solved by technology

[0004] In 1992, Leal et al. successfully isolated and identified the main component of the sex pheromone of the Japanese population as L-isoleucine methyl ester (L-isoleucine methyl ester), and in 1993 discovered R-(-)-linalool ( R-(-)-linalool) is a trace component. Although the sex pheromone component was isolated and identified, the effect was not significant when applied to the actual control process. The main reason for this phenomenon is that the synthesis and release mechanism of sex pheromone will be properly adjusted to adapt to the internal and external environmental conditions with the changes of various internal and external environmental factors such as insect age, photoperiod, temperature, and humidity. It may also be an adaptation of the scarab beetle to a sex attractant

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