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Sprayable pheromone for controlling the North American grape berry moth by mating disruption

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Abstract:

Abstract 

1 Sex pheromone-mediated mating disruption can be used to provide economic control of the North American grape berry moth in commercial vineyards. Controlled release devices that use a plastic tube or polymer to regulate the emission of pheromone have been registered for use in Canada for controlling this pest. These dispensers require manual application, whereas a newly developed microencapsulated formulation can be applied using a vineyard airblast sprayer.

2 The efficacy of 3M Sprayable Pheromone was compared with the efficacy of Isomate® GBM pheromone dispensers and organophosphorus insecticide for controlling the grape berry moth during the 1997 and 1998 growing seasons. Two application schedules of sprayable pheromone were tested during 1997 and two formulations of sprayable pheromone were tested during 1998. The mating disruption efficiency of the pheromone treatments was compared using pheromone-baited traps and the efficacy of the pheromone and insecticide treatments was compared by inspecting grape clusters for feeding injury caused by grape berry moth larvae.

3 The estimated mating disruption efficiency of the pheromone treatments ranged from 67 to 100%. There was no difference in the efficiency of the two application schedules of 3M Sprayable Pheromone during 1997. The estimated efficiency of Isomate® GBM was greater than that of 3M Sprayable Pheromone during the first two flights of 1997. During 1998, the estimated efficiency of 3M Sprayable Pheromone and Isomate® GBM was similar.

4 The average percentage of grape clusters with grape berry moth feeding injury was greater in the border than in the interior zone on 13 ocassions, and greater in the interior zone than in the border zone of experimental plots on six of the 72 occasions when clusters were inspected during the 2-year study.

5 The average percentage of grape clusters with feeding injury was similar in plots treated with 3M Sprayable Pheromone, Isomate® GBM and insecticide during both years of the study. There was no difference in feeding injury in plots treated with 3M Sprayable Pheromone and Isomate® GBM, despite the greater estimated mating disruption efficiency of Isomate® GBM.

6 The use of sprayable pheromone may have several operational and cost advantages compared with a hand-applied dispensing system such as Isomate® GBM.

Keywords: Endopiza viteana; grape berry moth; mating disruption; sprayable pheromone

Document Type: Research Article

DOI: https://doi.org/10.1046/j.1461-9563.2003.00188.x

Affiliations: 1: Southern Crop Protection and Food Research Centre, Agriculture & Agri-Food Canada, PO Box 6000, Vineland Station, Ontario L0R 2E0, Canada, and 2: 3M Canada Company, PO Box 5757, London, Ontario N6A 4T1, Canada

Publication date: 2003-08-01

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