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黏板對檬果園內小黃薊馬(Scirtothrips dorsalis Hood)誘捕效能評估

Catch Efficiency of the Sticky Trap for Scirtothrips dorsalis Hood in the Mango Orchard

摘要


Scirtothrips dorsalis Hood (Thysanoptera: Thripidae) is a primary pest that seriously infests the leaves and fruits of mango during its various developing stages. This study was conducted to evaluate the efficiency of different colored sticky traps to attract S. dorsalis in the Irwin mango orchard in Pingtung, Taiwan, and compare the catching efficiency of sticky traps set at different heights. Also, we investigated the activity patterns of S. dorsalis by using sticky traps with suitable color and placed at the correct height in the mango orchards. The results show that sticky traps in bright yellow (81.4 ± 7.2/trap) and orange yellow (66.0 ± 5.4/trap) were significantly more effective in catching thrips than were those in green, white, and blue. The results of the trap height tests showed that the number of thrips caught by sticky traps set at different height depend on the growing stage of the mango plants. The maximum amount of thrips caught in the blooming stage was on traps set 200 and 250 cm above ground level. Traps set 100, 150, and 200 cm above the ground level could catch more thrips during the fruiting stage. However, the differences of thrips caught among traps set at different heights during the vegetative growth stage are insignificant. In the study of the activity pattern of S. dorsalis, the maximum number of thrips were caught between 10:00 to 12:00 am /day (16.0 ± 1.6/trap) and these numbers were significantly more than those caught during the other time periods (p < 0.05). The results of our study can improve the monitoring technique as well as the prevention and control of S. dorsalis during the various stages of mango growth.

並列摘要


Scirtothrips dorsalis Hood (Thysanoptera: Thripidae) is a primary pest that seriously infests the leaves and fruits of mango during its various developing stages. This study was conducted to evaluate the efficiency of different colored sticky traps to attract S. dorsalis in the Irwin mango orchard in Pingtung, Taiwan, and compare the catching efficiency of sticky traps set at different heights. Also, we investigated the activity patterns of S. dorsalis by using sticky traps with suitable color and placed at the correct height in the mango orchards. The results show that sticky traps in bright yellow (81.4 ± 7.2/trap) and orange yellow (66.0 ± 5.4/trap) were significantly more effective in catching thrips than were those in green, white, and blue. The results of the trap height tests showed that the number of thrips caught by sticky traps set at different height depend on the growing stage of the mango plants. The maximum amount of thrips caught in the blooming stage was on traps set 200 and 250 cm above ground level. Traps set 100, 150, and 200 cm above the ground level could catch more thrips during the fruiting stage. However, the differences of thrips caught among traps set at different heights during the vegetative growth stage are insignificant. In the study of the activity pattern of S. dorsalis, the maximum number of thrips were caught between 10:00 to 12:00 am /day (16.0 ± 1.6/trap) and these numbers were significantly more than those caught during the other time periods (p < 0.05). The results of our study can improve the monitoring technique as well as the prevention and control of S. dorsalis during the various stages of mango growth.

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