@ARTICLE {NEUMANN:2004, title = {Nitrogen per unit leaf area affects the upper asymptote of Puccinia striiformis f.sp. tritici epidemics in winter wheat}, author = {Neumann, S. and Paveley, N. and Beed, F. and Sylvester-Bradley, R. }, journal = {Plant Pathology}, year = {2004}, volume = {53}, pages = {725--732}, }