Study on the using pattern of Cydia pomonella L.and Grapholitha molesta Busck Sex Pheromone in walnut orchard
[Objective]To explore the mode of scientific use of sex pheromone for Cydia pomonella L.and Grapholitha molesta Busck control in walnut orchard.[Methods]In this study,different suspension den-sities(300,450,600 roots/hm2)and heights(6-8m,8m,6m)of the sex pheromone were set in walnut orchards for two consecutive years from 2021 to 2022,and the effects of different suspension densities and heights of the sex pheromone on the control of C.pomonella L.and G.molesta Busck were determined through field bewildering interference tests.[Results]Compared with the control,there were significant differences(P＜0.05)in the disorientation rate and fruit infestation rate of mixed sex pheromone of C.pomonella L.and G.molesta Busck,sex pheromone of C.pomonella L.and G.molesta Busck with the density of 300,450,600 roots/hm2.The tropism effect of high density treatment was the best,and there was no significant difference between the disorientation rate and fruit infestation rate of mixed sex pheromone of C.pomonella L.and G.molesta Busck,sex pheromone of C.pomonella L.and G.molesta Busck with the same density treatment.Compared with the control,there was a significant difference(P＜0.05)between the rate of disorientation and the rate of fruit decay when the suspension height of the disorientation wire was 6-8 m(double layer),8 m and 6 m.The disorientation effect of the disorientation wire with a suspension height of 8 m on the codling moth and the oriental fruit moth was the best,the disorientation rate reached 96.41％and 99.71％,respec-tively,and the control effect reached 90.70％.[Conclusion]Considering the economic cost and control effect in production,it is suggested that the optimal setting density of mixed sex pheromone of C.pomonella L.and G.molesta Busck in walnut orchard is 450 roots/hm2,the optimal suspension height is 8 m,and it is recom-mended to use it in a large area for more than 1 year.
Cydia pomonella L.Grapholitha molesta BusckJuglans regiarate of infested fruitsrates of mating disruption
万方数据
维普
