Population Dynamics and Damage of Grapholitha molesta Busck Exposed to High Concentration Sex Pheromone and Insecticide Stress

doi:10.16409/j.cnki.2095-039x.2021.09.014

Abstract

Abstract: Population dynamics and damage of Grapholitha molesta Busck were measured under different treatment conditions such as sex pheromone mating disruption and insecticide in pear orchards in Yuncheng City, Shanxi Province from 2019 to 2020. The results showed that the population dynamics of G. molesta were similar in the mating disruption plot, the mating disruption plus insecticide plot, the insecticide plot, and the CK plot in the 2 years, which was characterized by decreasing population densities year by year. Among them, the population size of G. molesta in the mating disruption plus insecticide plot was significantly lower than that in the other plots and the trap catches moths were 98.20 and 67.20, respectively. The mating rate and the rate of bored fruit were significantly reduced in the mating disruption plot and the mating disruption plus insecticide plot. In conclusion, the combination of sex pheromone and insecticide can reduce the population size, mating rate and damage of G. molesta.

Key words: Grapholitha molesta, sex pheromone, mating disruption, insecticide, population characteristics, rate of bored fruit

CLC Number:

S476

LIU Zhongfang, ZHANG Min, SUN Xiaoting, ZHANG Pengjiu, YANG Jing, GAO Yue, FAN Jianbin, FAN Renjun. Population Dynamics and Damage of Grapholitha molesta Busck Exposed to High Concentration Sex Pheromone and Insecticide Stress[J]. Chinese Journal of Biological Control, 2021, 37(5): 914-919.

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