?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=https%3A%2F%2Forgprints.org%2Fid%2Feprint%2F11466%2F&rft.title=Consequences+of+including+adapted+white+clover+in+northern+European+grassland%3A+transfer+and+deposition+of+nitrogen&rft.creator=Gylfad%C3%B3ttir%2C+Th%C3%B3rey&rft.creator=Helgad%C3%B3ttir%2C+%C3%81slaug&rft.creator=H%C3%B8gh-Jensen%2C+Henning&rft.subject=+Landscape+and+recreation&rft.subject=Farm+nutrient+management&rft.subject=+Biodiversity+and+ecosystem+services&rft.description=The+interspecific+transfer+of+nitrogen+(N)+between+white+clover+(Trifolium+repens)+and+smooth+meadow+grass+(Poa+pratensis)+in+legume-based+grasslands+was+assessed+under+North+European+field+conditions+using+15N+individual+plant+leaf+labelling.+On+average+50%25+of+N+in+the+grass+was+transferred+from+the+white+clover+and+about+6%25+of+N+in+white+clover+was+transferred+from+the+grass.+This+corresponds+to+2.5+and+0.3+g+N+m-2+being+transferred+over+the+growing+season+between+the+two+species+respectively+and+demonstrates+that+a+significant+part+of+the+total+N+of+the+grass+is+coming+through+interspecific+transfer.+The+majority+of+the+15N+transferred+was+within+a+period+of+20+days+at+relatively+low+soil+temperatures.+This+implies+that+there+is+a+need+for+a+new+focus+on+direct+transfer+pathways+or+exudation+and+transfer+of+organic+N+sources.+Rhizodeposition+in+the+top+10+cm+of+the+soil+was+found+to+be+2.98+g+N+m-2+on+average+over+the+growing+season+for+the+grass+and+white+clover+mixture.+Inclusion+of+adapted+white+clover+varieties+in+the+low-input+grassland+systems+of+northern+Europe+will+lead+to+a+substantial+contribution+of+N.+&rft.date=2007&rft.type=Journal+paper&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.language=en&rft.identifier=%2Fid%2Feprint%2F11466%2F1%2F11466.pdf&rft.identifier=+++Gylfad%C3%B3ttir%2C+Th%C3%B3rey%3B+Helgad%C3%B3ttir%2C+%C3%81slaug+and+H%C3%B8gh-Jensen%2C+Henning+++(2007)+Consequences+of+including+adapted+white+clover+in+northern+European+grassland%3A+transfer+and+deposition+of+nitrogen.+++Plant+and+Soil%2C+297%2C+pp.+93-104.++++++++