Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.5/613
Título: A técnica da confusão sexual como táctica potencial de protecção integrada de citrinos para a cochonilha pinta-vermelha
Autor: Sousa, Helena Isabel Bento
Orientador: Silva, José Carlos Franco Santos
Soares, Celestino
Palavras-chave: aonidiella aurantii
mating disruption
confusão sexual
protecção integrada
pest management
Data de Defesa: 2008
Resumo: The use of Red Scale DownTM for mating disruption (MD) and pest management of the California red scale (CRS), Aonidiella aurantii (Maskell), was evaluated in a field experiment carried out in 2007, in the Southern region of Portugal (Algarve). A total of 250 dispensers of Red Scale DownTM per hectare were installed in four 1-2 ha sweet orange orchards, in two applications (March and ca. 3 months later). Each dispenser contains 0.4 mg of the active ingredients, i.e., (3S, 6R)-3-methyl-6-isopropenyl-9-decen-1-yl acetate (0.041%) and (3S, 6S)-3-methyl-6-isopropenyl-9-decen-1-yl acetate (0.025%). Three modalities of CRS management were compared in each orchard: A) MD; B) MD + one insecticide application (chlorpyriphos); C) MD + two or three insecticide applications (chlorpyriphos, mineral oil). Male captures in pheromone traps were monitored every two weeks. The level of fruit infestation by CRS was estimated before the experiment and in the end of season in order to evaluate the effectiveness of each management modality. The results suggest that mating disruption of CRS may be an effective tactic for pest management of CRS populations when infestation levels are low.
Descrição: Mestrado em Engenharia Agronómica - Instituto Superior de Agronomia
URI: http://hdl.handle.net/10400.5/613
Aparece nas colecções:BISA - Dissertações de Mestrado / Master Thesis

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