Control of the plum fruit moth, Grapholita funebrana Treitschke (Lepidoptera: Tortricidae), has been mainly based on the use of chemical insecticides, which can cause undesirable side eﬀects, leading to a growing interest towards alternative sustainable strategies. The aim of this study was to evaluate the eﬀect of the mating disruption technique on G. funebrana infestation in plum orchards, by comparing the number of male captures in pheromone-baited traps, and evaluating the damage to fruits in plots treated with the pheromone dispersers and in control plots. The study was carried out in 2012 and 2014 in three organic plum orchards, on the cultivars Angeleno, Friar, President and Stanley. To evaluate the pheromone emission curve of the dispensers from the openings to the end of the trials, a chemical analysis was carried out by solid phase micro-extraction followed by gas chromatography, followed by mass spectrometry. In all years and orchards the mean number of males caught in traps placed in the treatment plots was always signiﬁcantly lower than untreated plots. Pheromone emission from the dispensers was highest at the opening, and was still considerable at 54 days of ﬁeld exposure, while it signiﬁcantly decreased after 72 days of ﬁeld exposure. Cultivar was conﬁrmed to be an essential factor in determining the fruit infestation level. Pheromone treatment signiﬁcantly reduced fruit infestation, but not economic damage.
|Numero di pagine||14|
|Stato di pubblicazione||Published - 2020|
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