Phosphorus acquisition by citrate- and phytase-exuding Nicotiana tabacum plant mixtures depends on soil phosphorus availability and root intermingling

Courtney D Giles, Alan E Richardson, Barbara J Cade-Menun, Malika M Mezeli, Lawrie K Brown, Daniel Menezes-Blackburn, Tegan Darch, Martin Sa Blackwell, Charles A Shand, Marc I Stutter, Renate Wendler, Patricia Cooper, David G Lumsdon, Catherine Wearing, Hao Zhang, Philip M Haygarth, Timothy S George