Journal of Taiwan Agricultural Research

Author:Kun-Yaw Ho*, Shi-Cheng Hung, Chien-Chung Chen and How-Jing Lee

Abstract:

    The results of field tests showed that it was effective in attracting the Oriental fruit fly, Bactrocera dorsalis (Hendel), by using the Victor fly trap in which a poisoned or non-poisoned methyl eugenol (ME) fiber board was placed. Its effectiveness could last for more than eight months, which was further proven in the subsequent test. The number of male trapped was greatly increased with the increase of the concentration of ME in Victor fly trap. The amount of ME more than 12ml per fiber board produced the best result in attracting male. Observations also showed that the non-poisoned ME in the closed Victor fly trap had the best lasting effects in attracting males within a period of four months. There was no significant difference between poisoned and non-poisoned ME traps in a continuous short-term observation for 6 and 8 days. An additional test in wax apple orchard showed that the number of male trapped by poisoned ME in Victor fly trap was only 44.4% as compared with that of non-poisoned ME. In litchi orchard, adding honey or urea to poisoned or non-poisoned ME did not influence the effectiveness of attracting the Oriental fruit fly. Similar results were also observed in adding sticky board to poisoned or non-poisoned Victor fly trap. Piercing 5 small holes at the bottom of the Victor fly trap did not affect the effectiveness of the trap, and could prevented the problem of water accumulation in the trap.

Key words:Victor fly trap, Bactrocera dorsalis, Methyl eugenol

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