Efficacy of different rates of sexual pheromone of Phthorimaea operculella (Zeller) (Lepidoptera: Gellechiidae) in males of potato tuber moth captures
Potato tuber moth (PTM), Phthorimaea operculella (Zeller), widely world distributed, is one of the most serious insect pest attacking potatoes ( Solanum tuberosum L.). Larvae develop in foliage and tubers of potato causing direct losses of edible product. Chemicals treatment to control this pest hav...
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Published in | Agricultura técnica Vol. 67; no. 4 |
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Main Authors | , , , , |
Format | Journal Article |
Published |
Chile
Instituto de Investigaciones Agropecuarias, INIA
01.10.2007
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Subjects | |
Online Access | Get full text |
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Summary: | Potato tuber moth (PTM), Phthorimaea operculella (Zeller), widely world
distributed, is one of the most serious insect pest attacking potatoes
( Solanum tuberosum L.). Larvae develop in foliage and tubers of
potato causing direct losses of edible product. Chemicals treatment to
control this pest have shown limited efficacy, especially when larvae
is under the soil. The utilization of synthetic pheromones as a tool
that interferes with insects mating had been widely demonstrated in
numerous moth and others insects species. With the objective to
evaluate the efficacy of different doses of pheromone per trap in PTM
males captures for its future utilization as a mass trapping technique,
two experiments in a complete randomized blocks design, were carried
out at Valle del Elqui, Coquimbo ,egión, Chile, during the summer
season 2003-2004, and spring 2004. Doses of 0.2, 0.5, 1, 2 and 5 mg and
0.05, 0.1, 0.2, and 0.5 mg of PTM sex pheromone mixture (E4-Z7
Tridecadienil acetate, and E4-Z7-Z10 Tridecatrienil acetate at rate
1:1.5) per trap were evaluated. Results showed that pheromone´s
dispensers loaded with the rates of 0.2 and 0.5 mg, captured the larger
numbers of PTM males per trap. With the optimization of the pheromone
rate per trap, studies will continue to propose PTM mass trapping
technique, a non chemical method of control, environmentally safe. |
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ISSN: | 0365-2807 |