?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Dahlmann%2C+Christoph&rft.aulast=Dahlmann&rft.aufirst=Christoph&rft.date=2006&rft.title=Influence+of+different+seed+rates%2C+sowing+techniques+and+N+supply+on+grain+yield+and+quality+parameters+in+intercropping+systems&rft.genre=proceeding