?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Produktionsaufbau+und+Qualit%C3%83%C2%A4tssicherung+f%C3%83%C2%BCr+Bio-Jungb%C3%83%C2%A4ume+und+Bio-Jungreben&rft.subject=Viticulture&rft.subject=Fruit+and+berries&rft.description=Currently+no+reliable+modern+growing+methods+for+high+quality+plantlets+are+available+for+organic+fruit+tree+and+grapevine+nurseries%2C+suitable+for+Swiss+conditions.+Such+methods+need+to+be+developed.+%0D%0A%0D%0ASince+2005+organic+fruit+and+wine+producers+have+to+use+plantlets+from+organic+nurseries.+Currently%2C+prices+for+these+plants+are+higher+and+their+external+quality+is+lower+than+that+of+conventional+plants.+Therefore+organic+growers+and+nurseries+have+expressed+their+urgent+demand+for+improved+production+techniques+to+reach+an+%C3%A2%C2%80%C2%9Cas-conventional%C3%A2%C2%80%C2%9D+quality+of+the+organic+plantlets.%0D%0A%0D%0AAs+part+of+the+project+on-farm+research+trials+are+carried+out+on%3A+%0D%0Ai)+different+fertilization+concepts%3B+%0D%0Aii)+substitution+of+ramification-hormones+(manual+methods+or+natural+substances)%3B+%0D%0Aiii)+use+of+mycorrhiza%3B+specific+soil+bacteria%3B+%0D%0Aiv)+optimization+and+innovation+of+plant+protection%3B+methods+to+improve+weed+control%3B+and+between-row+management+(cover+plants)%3B%0D%0Av)+tests+on+rootstock+production%3B+vi)+elaboration+of+quality+criteria+for+organic+tree+and+grapevine+plantlets+%0D%0ARegular+consultation+and+follow-op+of+organic+tree+nurseries+are+carried+out.%0D%0A%0D%0AResults%0D%0A-Fertilization+with+high+levels+of+nitrogen+in+the+spring+did+not+result+in+the+best+quality+trees.%0D%0A-Firsts+results+with+soil+bacteria+products+show+that+it+might+be+possible+to+work+with+less+nitrogen+fertilization.%0D%0A-Use+of+foliar+fertilizers+did+not+improve+tree+quality.%0D%0A-+So+far%2C+the+best+substitute+of+ramification+hormones+is+the+mechanical+method+(Pleuzen).%0D%0A-+Soil+management+control+between+rows%3A+Covering+the+soil+with+organic+material+(China+straw)+or+with+plastic+foil+(Mypex)+and+sowing+with+annual+legumes+or+Phacelia+represent+practical+possibilities.%0D%0A&rft.type=Project+description&rft.type=NonPeerReviewed&rft.identifier=%7BProject%7D+Organic+fruit+tree+and+grapevine+nurseries%3A+Produktionsaufbau+und+Qualit%C3%83%C2%A4tssicherung+f%C3%83%C2%BCr+Bio-Jungb%C3%83%C2%A4ume+und+Bio-Jungreben.+[Establishment+and+quality+assurance+of+organic+fruit+tree+and+grapevine+nurseries.]+Runs+2002+-+2008.+Project+Leader(s)%3A+Suter%2C+Francisco%3B+Weibel%2C+Franco+and+Tschabold%2C+Jean-Luc%2C+Research+Institute+of+Organic+Agriculture+(FiBL)%2C+CH-5070+Frick.+More+information+online+at+%3Chttp%3A%2F%2Fwww.fibl.org%2Fde%2Fschweiz%2Fforschung%2Fanbautechnik-pflanzenbau.html+%3Chttp%3A%2F%2Fwww.fibl.org%2Fde%2Fschweiz%2Fforschung%2Fanbautechnik-pflanzenbau.html%3E%3E.&rft.relation=http%3A%2F%2Forgprints.org%2F6208%2F