?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=DOK-Langzeit-Versuch&rft.subject=+Nutrient+turnover&rft.subject=+Soil+biology&rft.subject=+Biodiversity+and+ecosystem+services&rft.subject=+Crop+husbandry&rft.description=In+1974%2C+the+Swiss+Federal+Office+of+Agriculture+(BLW)+charged+the+former+Federal+Research+Station+for+Agricultural+Chemistry+and+Hygiene+of+Environment+(FAC%2C+Bern-Liebefeld)+to+set+up+a+field+trial+in+collaboration+with+the+FiBL+in+order+to+compare+the+performance+of+organic+farming+systems.When+FAC-Liebefeld+was+shut+down%2C+the+Swiss+Federal+Research+Station+for+Agroecology+and+Agriculture+(FAL-Reckenholz)+took+over+the+responsibility+for+the+DOK+trial+in+close+cooperation+with+FiBL.+%0D%0A%0D%0AThe+DOK-long+term+trial+-+unique+in+its+conception+-+compares+the+consequences+of+bio-organic%2C+bio-dynamic+and+conventional+farming+systems+in+a+randomised+plot+trial+that+has+no+other+equivalent.+Experimental+samples+are+used+by+many+other+laboratories+to+develop+new+methods+in+the+areas+of+soil+and+food+quality.%0D%0AThe+strategies+of+fertilization+and+plant+protection+are+the+main+differences+between+the+systems%2C+whereas+crop+rotation+and+soil+tillage+were+almost+identical.%0D%0AThe+area+where+the+DOK-trial+is+located%2C+is+documented+to+have+long+been+in+use+as+arable+land+(1957%C3%A2%C2%80%C2%931973+ley+rotation%2C+1973%C3%A2%C2%80%C2%931975+field+legumes+and+cereals%2C+1976+oats).+In+May+1977+the+whole+area+was+sown+with+grass-clover%2C+and+in+the+spring+of+1978+the+field+experiment+began+with+potatoes%2C+spring+wheat+and+spring+barley.%0D%0A%0D%0A%0D%0A&rft.type=Research+facility+description&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Forgprints.org%2F5104%2F1%2FMaeder-2005-DOK.pdf&rft.identifier=%7BFacility%7D+DOK%3A+DOK-Langzeit-Versuch.+[DOK+long+term+experiment.]+Facility+Leader(s)%3A+M%C3%83%C2%A4der%2C+Paul%2C+Forschungsinstitut+f%C3%83%C2%BCr+biologischen+Landbau+(FiBL)%2C+CH-5070+Frick.+More+information+online+at+%3Chttp%3A%2F%2Fwww.fibl.org%2Fforschung%2Fanbautechnik-einjaehrig%2Fdok%2Findex.php+%3Chttp%3A%2F%2Fwww.fibl.org%2Fforschung%2Fanbautechnik-einjaehrig%2Fdok%2Findex.php%3E%3E.&rft.relation=http%3A%2F%2Forgprints.org%2F5104%2F