بررسی تاثیر رنگ تله درجذب و کنترل Rhynchophorus ferrugineus

Red palm weevil Rhynchophorus ferrugineus Oliv. (Col. Dryophthoridae) is one of the most important pests of palm trees, which in addition to reducing the quantity and quality of date fruit, also limits the health of the tree. Due to the activity of this pest inside the tree trunk, chemical control methods have low efficiency. In order to investigate the effect of the color of the trap in attracting the adult of Red palm weevil, buckets with red, light blue, black and white colors with the same conditions in terms of "height, opening diameter, number (4) of holes on the body for the entrance of the pest, and in the form of a cylinder protrusions on the body" were prepared. The amount of water used (3 liters) in the trap and the number of dates used (15 number) to attract the pest were the same for all the traps. Trees with the same age (12 years), nutritional and appearance conditions were selected as test material and their health was examined in terms of contamination with the Red palm weevil pest. Around each tree, in four directions, 4 buckets with different colors were installed at a distance of 2 meters from the tree trunk by digging a hole, and the experiment was performed with in a completely randomized design whit three replications. Capture of traps were counted regularly and weekly for four months. After collecting and checking the data using Minitab software and Duncan's test , the results showed that there is a significant difference between the treatments and black traps (F = 11.53; df = 3, 6; (P < 0.05) had the highest absorption rate and white traps had the lowest capture rate. There was no significant difference between white and light blue traps. It is recommended to consider the color of the traps as an effective parameter in pest attraction in controlling this pest.