Fig. 2. Effect of planting date on the incidence of leaf-spot in the penultimate leaf (A and C) and flag leaf (B and D) of wheat expressed as leaf area with symptoms (%) in 2003 and 2004 at Site 1; and in 2003, 2004, and 2005 at Site 2. The D₁, D₂, and D₃ are the first, second, and third planting dates, respectively, in each site–year. Bars labeled with different letters within each year–site are significantly different at P 0.05.