The relative effectiveness of using different sex-pheromone products to disrupt the mating of Grapholitha molesta(Busck)in a pear orchard
[Aim]To determine the relative effectiveness of different sex pheromone products for disrupting the mating of Grapholitha molesta(Busck)in a pear orchard.[Methods]Four brands of mating disruption products;You'er,Ninglu Shengtai,Shenglv Zhibao and Aofumu,were tested in a pear orchard in Laiyang City in July,2020.Pheromone dispensers were hung in pear trees at a density of 40 per 667 m2 and 2 kinds of traps were operated during the same period.In addition,the ratio of damaged fruit and shoots were calculated as an indicator of effectiveness of control.[Results]There were no significant differences among the 4 brands of mating disruption products tested;all were more than 80%effective and achieved fruit and shoot damage ratios of<2%and 3%,respectively.[Conclusion]There are no significant difference between the 4 brands of mating disruption products tested.All four products should therefore be effective for disrupting the mating of G molesta damage in pear orchards.