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Effect of trap colour and stirring of contents of pheromone-baited traps on the capture of the adult red palm weevil in the United Arab Emirates

Published online by Cambridge University Press:  20 July 2018

Ahmad Hussen Al-Saoud
Ahmad Hussen Al-Saoud*
Affiliation:
Plant Protection, Bin Ham Group, Al-Ain, United Arab Emirates
*
*E-mail: alsaoudahmad@hotmail.com
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Abstract

The red palm weevil (RPW), Rhynchophorus ferrugineus (Olivier), is one of the most destructive pests of date palm in United Arab Emirates. We conducted field trials in Abu Dhabi from May 2010 to April 2011, to evaluate the effect of weekly stirring of water and dates in the RPW pheromone trap on adults captured in brown and white traps, using a randomized complete block design with four treatments and five replications. Each trap contained: (1) a dispenser of the RPW male aggregation pheromone (Ferrolure™) containing 700 mg of the active ingredient (4-methyl-5-nonanol (90%) + 4-methyl-5-nonanone (10%)) at 95% purity; (2) an ethyl acetate (EA) dispenser (Weevil Magnet™) containing 40 ml of the active ingredient of EA at 98% purity; (3) 350 g of fodder date fruits; and (4) 4 L of water. Mean adults captured in white traps was 22.5 ± 0.50 and 16.8 ± 0.41 adults/trap/month with and without stirring, respectively, while in brown traps the mean was 39.9 ± 1.31 and 28.3 ± 0.51, respectively. The overall mean of adults captured was 31.2 ± 6.21 and 22.6 ± 4.81 adults/trap/month with and without stirring, respectively. The highest number of weevils caught was in the brown traps with stirring, while the lowest was in the white traps without stirring. The results of these trials suggest the use of brown traps containing aggregation pheromone, 350 g of date fruits, EA and water. It is necessary to stir the water with dates in the traps to increase their efficacy.

Keywords

Rhynchophorus ferrugineuspheromone trapsstirringtrap contents
Type
Research Paper
Information
International Journal of Tropical Insect Science , Volume 38 , Issue 3 , September 2018 , pp. 224 - 231
Copyright
Copyright © icipe 2018 

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