Adult population dynamic of the oriental fruit moth Grapholita molesta and the control efficacy of sex pheromone disorientation against it in a plumcot orchard in southern Xinjiang
To determine the occurrence pattern and control efficacy of sex pheromone emitter against the oriental fruit moth Grapholita molesta(Busck),the population dynamics of this pest using sex pher-omone traps in plumcot orchards in Aksu during 2021 and 2022 were monitored,and the efficiency of the sex pheromone emitter in controlling oriental fruit moths in plumcot orchards were also evaluated.The results showed that the oriental fruit moth occurred four generations per year in Aksu.The emer-gence of the overwintering generation peaked in early to mid-April,followed by the first generation in late May to early June,the second generation in early July,and the third generation in early to mid-Au-gust.There was a significant overlapping among these generations.The rate of boring fruits caused by oriental fruit moths in conventional control orchards(2.46％)was significantly higher than in orchards using sex pheromone emitters(0.06％)in 2022.The reduction in boring treetops ranged from 88.65％to 98.13％in 2021-2022,while the reduction in boring fruits was 98.40％in 2022.The disorientation rates of sex pheromone emitter among different generations of oriental fruit moths ranged from 92.87％to 100.00％in male adults in 2021,the reduction rates of adult abundance ranged from 58.75％to 81.37％in 2022.These results indicated that using sex pheromone emitter is an effective strategy to sup-press the density and damage caused by oriental fruit moths in plumcot orchards in southern Xinjiang.
万方数据
维普
