Mating disruption field trials to control the vine mealybug Planococcus ficus (Articolo in rivista)

Type
Label
  • Mating disruption field trials to control the vine mealybug Planococcus ficus (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Alternative label
  • 1 Cocco, Arturo ; 1 Coinu, Michele ; 1 Lentini, Andrea ; 2 Serra, Giuseppe ; 1 Delrio, Gavino (2011)
    Mating disruption field trials to control the vine mealybug Planococcus ficus
    in IOBC-WPRS Bulletin
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • 1 Cocco, Arturo ; 1 Coinu, Michele ; 1 Lentini, Andrea ; 2 Serra, Giuseppe ; 1 Delrio, Gavino (literal)
Pagina inizio
  • 215 (literal)
Pagina fine
  • 221 (literal)
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  • ID_PUMA : cnr.ise/2011-A0-021 (literal)
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  • 67 (literal)
Rivista
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  • 1 Dipartimento di Protezione delle Piante, Università di Sassari ; 2 CNR-ISE, Sede distaccata di Sassari (literal)
Titolo
  • Mating disruption field trials to control the vine mealybug Planococcus ficus (literal)
Abstract
  • A mating disruption experiment against the vine mealybug, Planococcus ficus, was carried out during 2008 in 3 commercial vineyards in northwestern Sardinia. Within each vineyard, 2 adjacent plots of variable size (0.2, 0.4, and 0.5ha, respectively) were established as mating disruption and control plot. Plastic dispensers (Suterra Inc., USA) with 100mg each of the synthetic sex pheromone were deployed in mid-May, before the first flight of adult males, at a rate of 625 dispensers per hectare. The effectiveness of the mating disruption technique was evaluated by comparing the number of males captured in pheromone traps, the leaf population density, the percentage of ovipositing females, and the crop damage. Male flights were monitored with traps baited with 0.01mg of the sex pheromone. The percentage of females with ovisacs and their fecundity were estimated by collecting adult females after each peak male flight and rearing them individually under laboratory conditions. The mealybug density was assessed from June to September by counting every 2 weeks nymph and female mealybugs on basal leaves of 20-30 vines per plot. The crop damage was evaluated at harvest by assessing the percentage of damaged bunches on the same vines. In all the vineyards, the number of males captured in mating disruption plots was lower by far than in control plots, while the percentage of females with ovisac was significantly different only in the first generation. Females collected from the field after the first male flight produced more eggs than those collected after the second and third flight, with no significant difference between treatments. The density of mealybugs on leaves in mating disruption plots was lower than that in control plots, but the difference was not significant. Also, the percentage of damaged bunches at harvest did not differ between treatments. Mating disruption experiments to control the vine mealybug produced mixed results. This could be due to the limited size of experimental plots and/or the suspected parthenogenetic reproduction of Sardinian populations of P. ficus. (literal)
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