?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=P+S&rft.au=Carberry%2C+P+S&rft.aulast=Carberry&rft.atitle=Role+of+modelling+in+improving+nutrient+efficiency+in+cropping+systems&rft.title=Plant+and+Soil&rft.date=2002&rft.volume=245&rft.pages=193-203&rft.genre=article