Studer,C.; Schmidhalter,U.; Oertli,J.J.
Interactive effects of N-, P-, K- and water stresses on root and shoot development of maize seedlings
187-188
Root Ecology and its Practical Application - a Contribution to the Investigation of the Whole Plant 2
Kutschera L. et al.
Verein für Wurzelforschung Klagenfurt
1992