?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Wirkung+biologisch-dynamischer+Pr%C3%83%C2%A4parate+in+Rebbergen&rft.subject=Viticulture&rft.description=State+of+the+Art%3A%0D%0AThe+majority+of+vine+bio-dynamic+growers+report+positive+experiences+in+terms+of+plant+production+but+also+wine+quality.+However%2C+quantitative+and+scientifically+proved+data+are+not+available.+However+there+is+a+high+interest+of+the+wine+growers+for+appoved+data+on+the+efficiency+of+the+bio-dynamic+preparations.+As+in+other+countries+bio-dynamic+viticulture+is+rapidly+growing+in+Switzerland.+However%2C+there+is+very+little+scientific+evidence+for+the+efficiency+of+the+preparations.+Thus%2C+science-based+recommendations+for+its+use+or+optimisation+cannot+be+given.%0D%0A%0D%0AProject+aims+including+target+group%3A%0D%0ATo+show+the+quantitative+effects+of+bio-dynamic+preparations+on+parameters+of+plant+growth%2C+disease+tolerance%2C+soil+properties+and+finally+also+on+vine+quality.+An+additional+goal+of+the+project+is+the+management+improvement+of+the+bio-dynamic+growers+participating+in+the+trials.+The+results+may+show+possibilities+to+optimize+the+standard+and+the+specific+bio-dynamic+management+measures+of+the+growers.%0D%0A%0D%0AMethodology%3A%0D%0AIn+2003+the+project+team+that+includes+4+bio-dynamic+growers+installed+an+On-Farm+trial+on+4+different+sites+of+bio-dynamic+vine+farms.+At+each+site+4+different+treatment+blocks+are+separated%3A+a)+with+preparation+500+and+with+prep.+501%3B+b)+with+500+alone%3B+c)+with+501+alone%3B+d)+no+preparations.+Several+times+of+the+year+plant+growth+and+health+is+assessed.+Vine+quality+is+assessed+by+separated+microvinifcation+per+treatment+and+site.+The+management+of+the+4+vineyards+is+harmonized.%0D%0A%0D%0AResults%2C+conclusion%2C+state+of+the+art%3A%0D%0AFirst+results+do+not+show+differences+in+disease+incidence.+There+was+a+tendency+found+for+more+chlorophyll+in+leaves+where+prep.+501+is+applied.+At+two+sites+there+was+a+tendency+for+improvement+of+the+quality+of+soil+aggregates+where+500+is+applied.&rft.type=Project+description&rft.type=NonPeerReviewed&rft.identifier=%7BProject%7D+Bio-dynamic+preparations+in+vine+production%3A+Wirkung+biologisch-dynamischer+Pr%C3%83%C2%A4parate+in+Rebbergen.+[Effect+of+bio-dynamic+preparations+in+vine+production.]+Runs+2003+-+2008.+Project+Leader(s)%3A+Levite%2C+Dominique+and+Weibel%2C+Franco%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%2F6410%2F