confusão sexual para o controle de grapholita molesta (lepidoptera: tortricidae), em pomares de macieira, em fraiburgo (sc), brasil mating disruption for the control of grapholita molesta (lepidoptera: tortricidae), in fraiburgo, santa catarina, brazil

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ID: 146819
2008
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Abstract
O controle de Grapholita molesta (Lepidoptera: Tortricidae) foi avaliado pela técnica de confusão sexual em macieira no município de Fraiburgo (SC). A formulação do feromônio sintético utilizada foi da marca Quant G.m. (400 mg do acetato de (Z/E) - 8 - dodecenila 14% p/v), com 500 difusores por hectare, distribuídos em um pomar de macieira comercial 'Fuji' de 2,52 ha. O tratamento com confusão sexual foi comparado com a testemunha convencional. O monitoramento para moscas-das-frutas, Anastrepha fraterculus (Diptera: Tephritidae); mariposa oriental, Grapholita molesta e lagarta enroladeira, Bonagota cranaodes (Lepidoptera: Tortricidae) foi realizado para decidir se haveria necessidade de pulverização de inseticidas. Não houve capturas de G. molesta na armadilha do Tipo Delta, instalada no tratamento com confusão sexual até 93 dias após a liberação do feromônio. Nesse período, realizaram-se duas pulverizações para moscas-das-frutas e lagarta-enroladeira no tratamento com confusão sexual e oito pulverizações no tratamento convencional. Os danos causados por G. molesta em ambos os tratamentos não ultrapassaram 0,5%, mesmo com a redução de 77% dos inseticidas no tratamento com confusão sexual. Verifica-se, portanto, que a técnica de confusão sexual é eficiente para o controle de G. molesta.
The control of Grapholita molesta (Lepidoptera: Tortricidae) was assessed by using the mating disruption technique in an apple orchard in Fraiburgo, SC. Quant G.m. synthetic pheromone formulation (400 mg of (Z/E) - 8 - dodecenyl acetate 14% p/v) was used, with 500 dispensers per hectare, distributed over a 2.52 hectare 'Fuji' commercial orchard. The mating disruption treatment was compared with a chemical control treatment. The action threshold was determined by monitoring fruit flies Anastrepha fraterculus (Diptera: Tephritidae), G. molesta and leafroller Bonagota cranaodes (Lepidoptera: Tortricidae). G. molesta was caught in the Delta traps installed in the mating disruption plot until 93 days from release of the pheromone. In this period, the mating disruption treatment was sprayed twice for fruit flies and leafrollers, and the chemical control plot received eight pesticides application. The damage caused by G. molesta in both treatments did not exceed 0.5%, even with a 77% reduction of insecticide in the mating disruption plot. We concluded that the mating disruption technique was efficient in the control of G. molesta.
Reference Key
monteiro2008bragantiaconfuso Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Lino B. Monteiro;Alexandre de Souza;Luiz Belli
Journal revista espanola de salud publica
Year 2008
DOI
10.1590/S0006-87052008000100023
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052008000100023
Keywords
mating disruption

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