Figure 3. Effect of fungicide timing on the development of tar spot on the ear leaf (EL) and the two leaves above and below the ear leaf (ELĀ±2). Timing treatments included V8, V10, tassel/silk (VT/R1), blister (R2), milk (R3), dough (R4), dent (R5), and a two-fungicide application program made at V8 followed by VT. AUDPC = by area under disease progress curve. Tar spot first detected in trial on 28 July.

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