Evaluation of the CropSyst model for simulating the potential yield of cotton Rolf Sommer, Kirsten Kienzler, Christopher Conrad, Nazar Ibragimov, John Lamers, Christopher Martius and Paul Vlek Agron. Sustain. Dev., 28 2 (2008) 345-354 Published online: 05 April 2008 DOI: 10.1051/agro:2008008