The Control Technique of Rubber Borers by Pheromone Traps in Hainan

Abstract

The rubber borers, called of the bark beetles, is the most important pest of the rubber trees in the world. The effect of the pheromone releasing measure, a kind of ecological control method, was investigated over 2 years in Nanbao Farm, Lingao county, Hainan, China. The pheromone used was (s)-(+)-Ipsidenol, a commercially available rubber borers aggregation pheromone. There were 6 treatments, including 10m, 20m, 30m, 40m, 50m and 100m distance. Pheromone lures were changed monthly at which time the traps were moved to a different location within the stand. There were no significant differences in 30m distance catches of the rubber borers per traps. Meanwhile, there was no significant difference in plant damage between the pheromone treatment of 2.5 mg/mL and 3 mg/mL traps. The results also showed that the relationship between the mean number of the rubber borers per 5 days and average temperature was not significant.