Abstract:
【Objective】 To provide scientific basis for sex pheromone monitoring and control of
Grapholita molesta and
Grapholitha funebrana in fruit tree planting areas of southern Xinjiang.
【Method】 Traps containing
Grapholita molesta and
Grapholitha funebrana and three different types of traps were hung at the density of 4 traps per 667m
2, 8 traps per 667m
2and 12 traps per 667m
2, respectively.The trapping effects of different densities and different types of traps on
Grapholita molesta and
Grapholitha funebrana Treitscheke were compared in apricot orchard, and the stick insect of the insect and replacement period of the trap core were also tested.
【Result】 In the experimental area with 4 traps per 667m
2, 8 traps per 667m
2 and 12 traps per 667m
2, the fruit decay rates before picking were 11.33%, 7.20%, 5.60%, respectively, and there was significant difference in the trap densities of 4 traps per 667m
2with 8 traps per 667m
2 and 12 traps per 667 m
2.There was no significant difference between 8 traps per 667m
2 and 12 traps per 667m
2.The trapping effects of different traps on the
Grapholita molesta and
Grapholitha funebrana Treitscheke were obviously different.Among them, the pot trap had the best trapping effect on the Grapholita molesta/
Grapholitha funebrana Treitscheke, followed by the triangle trap.There was no significant difference between the pot trap and the triangle trap.The trapping effect of the bottle trap was significantly worse than that of the triangle trap and the pot trap.Stick insect and duration of trap core had certain influence on trapping effects on
Grapholita molesta and
Grapholitha funebrana Treitscheke.The best trapping effect was found in stick insect replacement period of 5 d and trap core replacement period of 10 d.
【Conclusion】 Using sexual attractant to control the
Grapholita molesta and Grapholitha funebrana Treitscheke in apricot orchard in arid and high temperature areas of southern Xinjiang cannot achieve the goal of effectively controlling its harm.Although the pot trap had good trapping effect, it needs to be added water every day, so it is suggested to use triangle trap.Stick insect and the replacement period of trap core have great influence on the trapping effects.It is suggested that the stick insect should be replaced once every 7 to 10 d and the trap core should be replaced once every 30 days.