Editors

Editor -in-Chief:

Johannes Lehmann
Ithaca, USA

Editorial Board:
A. Atucha, Madison, USA
E.T. Ayuk, Dakar, Senegal
A. Bationo, Accra, Ghana
N. Bernstein, Bet-Dagan, Israel
R.M. Boddey, Rio de Janeiro, Brazil
P. Boeckx, Ghent, Belgium
N. Brüggemann, Jülich, Germany
E. Bünemann-König, Frick, Switzerland
M.L. Cabrera, Athens, GA, USA
M. Camps-Arbestain, Palmerston North, New Zealand
J. Dubeux Jr.,Marianna, USA
B. Eichler-Löbermann, Rostock, Germany
C. Gehring, São Luis, Brazil
B. Govaerts, Texcoco, Mexico
J. Grossman, University of Minnesota, USA
A. Khamzina, Bonn, Germany
R.F. Kuehne, Göttingen, Germany
J. Lamers, Bonn, Germany
A. Manschadi, Bonn, Germany
C. Martius, São José dos Campos, Brazil
O. Oenema, Wageningen, The Netherlands
B. Le Quang, Zurich, Switzerland
F. Renaud, Bonn, Germany
G. Richter, Harpenden, Herts
T. Rütting, Gothenburg, Sweden
C. Scheer, Brisbane, Australia
B.R. Singh, Aas, Norway
U. Singh, Muscle Shoals, AL, USA
A. Stein, Enschede, the Netherlands
J. Stoorvogel, Wageningen, The Netherlands
H. R. Tejeda, Santiago, Chile
H. Tiessen, São José dos Campos, Brazil
P. Tittonell, Wageningen, The Netherlands
R. Wassmann, Los Banos, Phillippines
J. Whalen, McGill University, Canada
C. Wortmann, Lincoln, USA