This work reports studies on the population dynamics and safe control strategies of Bactrocera oleae in four unsprayedolive groves of western Sicily from 2007 to 2010.The main management tools for B. oleae evaluated were the“Attract and Kill” lures (Ecotrap Vioryl), the use of sardines(traditional practice) and Nu-lure (innovative) and the spinosad (innovative) which is a selective insect control productproduced by the fermentation of a naturally occurring soil bacterium, Saccharopolyspora spinosa. Flies trend werecarried out by pheromone traps and the level of infestation counting the number of fruits with pest eggs, larvae and pupaeand hole hatching.Results showed that in all olive groves and during three years of observation, the number of males caught bypheromone traps and infestation levels in the control areas were often higher than in the treated areas with baits. The lowestvalues were always detected in areas with sardine and Nu-lur baits. The infestation was always lower in the areatreated with spinosad than in untreated area (control). The number of healthy olives from the areas treated with spinosadwas on average 70%.The assessment of these ecological methods induces their application as control strategies with the aim of reduce theolive fruit fly population below economic threshold considering the low environmental impact.
|Numero di pagine||11|
|Stato di pubblicazione||Published - 2011|