Indagine su presenza e dannosità di Rhagoletis cerasi (L.) nella Sicilia Occidentale.

Efficacia delle reti protettive, del rotenone e dello spinosad nel controllo di Ceratitis capitata (Wiedemann) su pesco biologico

In the organic farming the control of Ceratitis capitata (Wiedemann) is problematic for late ripening peach cultivars. In 2007 and 2008 we tested a protective net, rotenone and spinosad in a biodynamic peach orchard in Castrofilippo (AG). Traps baited with Trimedlure were placed in July and observed weekly. In 2007 there were 3 plots: rotenone, net cover and untreated. In 2008 a thesis with spinosad was added. Since the beginning of August four rotenone and spinosad treatments were done weekly. The net plot was covered since the end of July. At the commercial harvesting sampling on peaches were done collecting and analysing 50 peaches for each thesis, recording infested fruits. First male c…

Prove di controllo di Ceratitis capitata (Wiedemann) in pescheti, aranceti e clementineti biologici

Tests to control Ceratitis capitata (Wiedemann) in organic peach, orange and clementine orchards. The Mediterranean Fruit Fly, Ceratitis capitata (Wiedemann), is considered the key pest of several fruit species in organic farming. Experiments for the control of this pest have been carried out in organic peach orchards (in 2009 on a medium-late ripening cultivar, ‘Bella di Bivona’; in 2011 on a very early ripening one, ‘San Pedro’) testing nets, spinosad and pyrethrum (year 2009), in orange citrus groves (cv. Navelina, early ripening period), comparing spinosad, kaolin and bentonite (years 2009 and 2010) and in a clementine grove (cv. Monreal), using kaolin and bentonite. The very early ripe…

Dannosità e controllo di Rhagoletis cerasi (L.) in ceraseti biologici della Sicilia occidentale.

Damage and control of Rhagoletis cerasi (L.) in organic cherry orchards in Western Sicily The study was carried out in 2009, 2010 and 2011 in organic cherry orchards in Western Sicily, were the control of Rhagoletis cerasi (L.), the cherry fly, is a problem for medium-late ripening cultivars. Presence and infestation of the dipteran were monitored on local cultivars and the effectiveness of pyrethrum, allowed in organic farming, was tested, comparing it with net bags. The presence of the cherry fly was recorded in all cherry orchards except in one isolated and recently planted. The infestation on fruits was not very high; it was absent until the end of May. Nets drastically reduced the infe…

Prove di efficacia del caolino nel controllo di Ceratitis capitata (Wiedemann) in pescheti biologici

Effectiveness of clays and copper products in the control of Ceratitis capitata (Wiedemann) in organic orange orchards

PROVE DI LOTTA A CERATITIS CAPITATA CON IL METODO "ATTRACT AND KILL" IN ARANCETI A MATURAZIONE PRECOCE

La lotta alla mosca mediterranea della frutta, Ceratitis capitata (Wiedemann), nei frutteti biologici è considerata così problematica che il Reg. CE 889/08 ammette, soltanto per sfuggire agli attacchi di questo dittero tefritide, lo sverdimento degli agrumi con etilene e l'uso di due piretroidi, deltametrina e lambda-cialotrina, soltanto all'interno di trappole, in questo caso ammessi anche per la lotta a Bactrocera oleae (Rossi). Negli anni 2009 e 2010, in un aranceto biologico a maturazione precoce (cv Navelina) sito nel territorio di Sciacca (AG), sono state realizzate prove di lotta a C. capitata, utilizzando dispositivi sperimentali della ditta Agrisense denominati Magnet Med. Il dispo…

Survey on the control methods of Bactrocera oleae (Gmelin) in organic olive groves producing oil and table olives in Sicily

In Sicily there are several organic farms producing olive oil and the number of farms has grown in the last years. The control methods of Bactrocera oleae (Gmelin) used by Sicilian organic farms were surveyed in 2004 and 2005. After a bibliographic search on internet and by personal contacts, a sample of 30 organic farms in Sicily was chosen; 23 farms produce bottled extra-virgin oil and 7 produce table olives. Then farms were contacted by phone, some of them visited and olive growers were interviewed. For each farm were put together data about: interventions vs. the olive fruit fly, altitude, surface of the olive grove, olive cultivar, irrigation method, harvesting period, milling procedur…

Rhagoletis cerasi (L.) in Western Sicily: presence, damages and control in cherry orchards.

The research was carried out from 2006 to 2010 in 12 cherry orchards in Western Sicily, were Rhagoletis cerasi (L.), the cherry fly, represents a problem for medium late ripening cultivars. Presence and infestation of the dipteran were monitored on local cultivars and effectiveness of some products allowed in organic farming was tested compared with net bags. The presence of the cherry fly was recorded in all cherry orchards except in two recently planted and isolated. The infestation on fruits was not very high until the end of May. Pyrethrum and spinosad did not lower the infestation, on the contrary nets reduced it.

Tests on the effectiveness of mass trapping by Eco-trap (Vioryl) in the control of Bactrocera oleae (Gmelin)

Tests on the effectiveness of mass trapping by Eco-trap (Vyoril) in the control of Bactrocera oleae (Gmelin) in organic farming were carried out in 2003 and 2004. The tests took place into two organic olive groves located in Agrigento and Trapani (Sicily); in both years the olive cultivar was Cerasuola. In Agrigento, it was considered the effectiveness of Eco-trap vs. bottle traps baited with diammonium phosphate; while in Trapani the effectiveness of Eco-trap added to other products admitted in organic farming (two products containing kaolin and one containing copper) was evaluated. In 2003, year with a low B. oleae population density, no statistically significant difference resulted among…