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Impacto da traça-verde Palpita vitrealis (Rossi) em diferentes cultivares de ol...
Mateus, Helena; Figueiredo, Elisabete; Luz, João Pedro; Silva, Maria do Céu; Mexia, AntónioThe attacks of jasmine moth were monitored in three olive cultivars, ‘Arbequina’, ‘Cobrançosa’ and ‘Galega Vulgar’, in a five years old olive grove and also in a plot of ‘Galega Vulgar’ one year old near Belmonte. The observations were carried out in 2000, from April 5 to November 7 and the first symptoms were observed on July 7. ‘Cobrançosa’ was significantly less attacked throughout the observation period and...
Estimativa do risco de traça-verde Palpita vitrealis (Rossi) amplificada por co...
Mateus, Helena; Pereira, Cândido; Cardoso, Miguel; Manteigas, Ana; Sequeira, Manuel; Figueiredo, Elisabete; Luz, João Pedro; Mexia, AntónioJasmine moth population was monitored in olive groves in Cova da Beira, using traps baited with three commercial formulations of pheromone: Russell (in tricoloured funnel traps), SEDQ and Suterra (both in delta traps). Counts were carried out weekly from March to November 2010 for SEDQ’s pheromone and from September to November for Russell’s and Suterra´s pheromones. The scouts ranged among 0 and 4 insects/trap...
Detection and epidemiology of bacterial canker (Pseudomonas syringae) on wild c...
Luz, João Pedro Martins daBacterial canker has been severely affecting wild cherry trees (Prunus avium) and restraining the planting of this valuable hardwood for the last 13 years. The disease has been attributed to the bacterium Pseudomonas syringae pv. morsprunorum, which has caused bacterial canker in sweet cherry since at least the beginning of this century. Twenty-four wild cherry sites were investigated. From eight it was possibl...
Elementos para a protecção integrada em cerejeira
Luz, João Pedro Martins daA mosca-da-cereja (Rhagoletis cerasi L.), considerado o principal fitófago da cerejeira na Europa, atinge na região da Cova da Beira (Portugal) níveis de infestação dos frutos de 7%-8%, nas cultivares semi-tardias e tardias. Neste trabalho elaboraram-se as curvas de voo de R.cerasi, de 1988 a 1990, em cinco pomares da Cova da Beira, situados a cotas de altitude entre 520 m e 725 m. Os voos mais temporões inicia...
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