?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Vorbl%C3%83%C2%BCtebehandlungen+mit+Kaolin+gegen+den+Gemeinen+Birnenblattsauger+(Cacopsylla+pyri)&rft.creator=Daniel%2C+Claudia&rft.creator=Wyss%2C+Eric&rft.subject=Crop+health%2C+quality%2C+protection&rft.subject=Fruit+and+berries&rft.description=The+European+pear+sucker+Cacopsylla+pyri+(L.)+(Homoptera%3A+Psyllidae)+%C3%A2%C2%80%C2%93+one+of+the+main+pest+insects+in+pear+production+%C3%A2%C2%80%C2%93+is+commonly+controlled+by+spraying+broad-spectrum+insecticides%2C+which+may+have+serious+side-effects+on+beneficial+arthropods.+Recently%2C+a+new+approach+to+fruit+pest+management+has+arisen+in+the+form+of+processed-kaolin+particle+film+technology+(product+name+Surround%C3%82%C2%AE+WP).+The+white+kaolin+particle+film+repels+insects+without+killing+them.+Therefore%2C+side+effects+on+beneficial+arthropods+are+expected+to+be+low.+This+new+approach+triggered+the+present+study+to+control+C.+pyri.+In+spring+2003+a+small-plot+field+trial+was+conducted+to+assess+the+impact+of+pre-flowering+kaolin+treatments+on+the+first+generation+of+C.+pyri.+Multiple+applications+of+kaolin+after+the+beginning+of+the+flying+period+of+C.+pyri+were+compared+with+an+untreated+control+and+the+standard+organic+insecticide+rotenone.+Kaolin+significantly+reduced+the+number+of+nymphs+compared+to+the+untreated+control+and+showed+a+higher+efficacy+than+rotenone%2C+with+the+triple+application+of+kaolin+the+most+effective.+Due+to+the+high+mobility+of+the+adult+C.+pyri+the+effects+on+the+summer+population+could+not+be+assessed+in+this+small-plot+trial.+Therefore%2C+a+large-plot+trial+was+conducted+in+2004.+Again%2C+kaolin+showed+a+very+high+efficacy.+At+the+end+of+June+2004+few+C.+pyri+were+noticed+in+the+kaolin+treated+plot+but%2C+the+population+density+tended+to+be+lower+than+in+the+plot+treated+by+a+standard+IPM+strategy+(Envidor%C3%82%C2%AE%2C+Evisect%C3%82%C2%AE+S).+C.+pyri+was+kept+under+the+economic+threshold+until+harvest.+Since+kaolin+repels+insects%2C+its+effect+on+beneficials+are+low%2C+and+therefore+might+be+an+alternative+control+strategy+for+C.+pyri+in+organic+and+IPM+orchards.&rft.date=2006&rft.type=Journal+paper&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Forgprints.org%2F13114%2F1%2Fdaniel-wyss-2006-PsyllaDgaaE.pdf&rft.identifier=Daniel%2C+Claudia+and+Wyss%2C+Eric+(2006)+Vorbl%C3%83%C2%BCtebehandlungen+mit+Kaolin+gegen+den+Gemeinen+Birnenblattsauger+(Cacopsylla+pyri).+[Pre-flowering+kaolin+treatments+against+the+European+pear+sucker%2C+Cacopsylla+pyri+(L.).]+Mitt.+Dtsch.+Ges.+Allg.+Angew.+Ent.+(15)%2C+pp.+263-268.&rft.relation=http%3A%2F%2Forgprints.org%2F13114%2F