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J Econ Entomol


Title:Comparison of three dispenser distribution patterns for pheromone mating disruption of Paralobesia viteana (Lepidoptera: Tortricidae) in vineyards
Author(s):Isaacs R; Mason KS; Teixeira LA; Loeb G; Hesler S; Weigle T; Muza A; Timer J; Saunders M;
Address:"Department of Entomology, Michigan State University, East Lansing, MI 48824, USA. isaacsr@msu.edu"
Journal Title:J Econ Entomol
Year:2012
Volume:105
Issue:3
Page Number:936 - 942
DOI: 10.1603/ec11142
ISSN/ISBN:0022-0493 (Print) 0022-0493 (Linking)
Abstract:"Over two growing seasons, Isomate GBM-Plus tube-type dispensers releasing the major pheromone component of grape berry moth, Paralobesia viteana (Clemens) (Lepidoptera: Tortricidae), were evaluated in vineyards (Vitis spp.) in Michigan, New York, and Pennsylvania. Dispensers were deployed in three different density-arrangement treatments: 124 dispensers per ha, 494 dispensers per ha, and a combined treatment with 124 dispensers per ha in the vineyard interior and 988 dispensers per ha at the vineyard border, equivalent to an overall density of 494 dispensers per ha. Moth captures and cluster infestation levels were compared at the perimeter and interior of vineyards receiving these different pheromone treatments and in vineyards receiving no pheromone. Orientation of male moths to pheromone-baited traps positioned at the perimeter and interior of vineyards was reduced as a result of mating disruption treatments compared with the nontreated control. These findings were consistent over both years of the study. Disruption of male moth captures in traps varied from 93 to 100% in treated vineyards, with the 494 dispensers per ha application rates providing significantly higher level of disruption than the 124 dispensers per ha rate, but only in 2007. Measurements of percentage of cluster infestation indicated much higher infestation at perimeters than in the interior of the vineyards in all three regions, but in both sample positions there was no significant effect of dispenser density on cluster infestation levels in either year. The contrasting results of high disruption of moth orientation to traps in vineyards that also had low levels of crop protection from this pheromone treatment are discussed in the context of strategies to improve mating disruption of this tortricid pest"
Keywords:Animals *Insect Control Male *Moths Sex Attractants/*administration & dosage Vitis/*parasitology;
Notes:"MedlineIsaacs, Rufus Mason, Keith S Teixeira, Luis A F Loeb, Greg Hesler, Steve Weigle, Tim Muza, Andy Timer, Jody Saunders, Michael eng Comparative Study Evaluation Study Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. England 2012/07/21 J Econ Entomol. 2012 Jun; 105(3):936-42. doi: 10.1603/ec11142"

 
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