?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Tests+on+the+effectiveness+of+kaolin+and+copper+hydroxide+in+the+control+of+Bactrocera+oleae+(Gmelin)&rft.creator=Caleca%2C+Virgilio&rft.creator=Rizzo%2C+Roberto&rft.subject=Crop+health%2C+quality%2C+protection&rft.subject=Olive&rft.description=Repellent+and+antiovipositional+products+in+the+control+of+Bactrocera+oleae+(Gmelin)+find+a+great+interest+in+organic+farming%2C+because+of+the+lack+of+effective+products+able+to+kill+the+olive+fly+preimmaginal+stages.%0D%0AIn+2003+in+Castelvetrano+(Trapani+province%2C+Sicily)%2C+tests+on+the+effectiveness+of+Surround+WP%2C+a+product+containing+95%25+of+kaolin%2C+were+carried+out+on+three+table+olive+cultivars%2C+Nocellara+del+Belice%2C+Moresca+and+Tonda+Iblea.+In+2004%2C+in+the+same+field+and+on+the+same+cultivars%2C+BPLK+kaolin+was+tested+too.+In+the+second+year+the+two+products+containing+kaolin+were+also+tested+on+Cerasuola+cultivar+in+an+organic+olive+grove+located+in+Trapani%2C+comparing+them+with+copper+hydroxide.+%0D%0AAt+Castelvetrano+both+in+2003+and+in+2004+B.+oleae+infestation+levels+of+the+plots+treated+with+the+two+products+containing+kaolin+were+statistically+lower+than+those+of+the+control+plots.+In+this+site%2C+in+2004+Surround+WP+protected+olives+significantly+better+than+BPLK+kaolin%2C+limiting+olive+fly+harmful+infestation+up+to+17-23%25+vs.+68-87%25+of+BPLK+plots.%0D%0AAt+Trapani+in+2004%2C+the+two+products+containing+kaolin+and+copper+hydroxide+showed+statistically+significant+differences+from+the+untreated+control%2C+but+not+among+themselves%2C+limiting+the+harmful+infestation+up+to+3-37%25+vs.+87%25+of+the+control.+%0D%0AThe+different+results+of+2004+recorded+by+Surround+WP+and+BPLK+kaolin+in+the+two+olive+groves+seems+linked+to+the+different+rainfall+of+the+period+after+the+last+treatment%2C+64+mm+in+three+rainy+days+at+Castelvetrano+and+41+mm+in+eight+rainy+days+at+Trapani%3B+BPLK+kaolin+was+probably+washed+away+more+than+Surround+WP.%0D%0AThe+tested+products+containing+kaolin+and+copper+hydroxide+are+effectively+able+to+limit+B.+oleae+infestation+to+a+very+good+level+for+olive+oil+production%2C+moreover%2C+considering+the+earlier+harvesting+of+table+olives%2C+these+products+give+a+new+opportunity+for+controlling+the+olive+fly+also+in+the+organic+olive+groves+for+table+olive+production.%0D%0A&rft.date=2007&rft.type=Journal+paper&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Forgprints.org%2F7968%2F1%2FCaleca%2526RizzoIOBC.pdf&rft.identifier=Caleca%2C+Virgilio+and+Rizzo%2C+Roberto+(2007)+Tests+on+the+effectiveness+of+kaolin+and+copper+hydroxide+in+the+control+of+Bactrocera+oleae+(Gmelin).+IOBC+WPRS+Bulletin.+[+In+Press+%2C+2007]&rft.relation=http%3A%2F%2Forgprints.org%2F7968%2F