%0 Journal Article %T Hydroponics versus field lysimeter studies of urea, ammonium and nitrate uptake by oilseed rape(Brassica napus L.) %A Arkoun, Mustapha %A Sarda, Xavier %A Jannin, Laëtitia %A Laîné, Philippe %A Etienne, Philippe %A Garcia-Mina, José-Maria %A Yvin, Jean-Claude %A Ourry, Alain %J Journal of Experimental Botany %V 63 %N 14 %P 5245-5258 %@ 0022-0957 %D 2012-08-29 %I Oxford University Press %~ DeepDyve