Triazole and Strobilurin foliar fungicide effects on soybean disease suppression, senescence and yield
Bruce Potter, University of Minnesota Department of Entomology and Southwest Research and Outreach Center
Summary
A triazole fungicide (Folicur, Bayer CropScience) and a strobilurin fungicide (Headline, BASF Corporation) were applied to soybean singly and in combinations at the R2 and late R3 stages. Additional timings intended to coincide with soybean rust were not applied. Yield responses were not observed with any fungicide application under a low foliar disease, high yield environment. At maturity Headline, Headline followed by Folicur and 2 applications of Folicur treatments had greater leaf retention than untreated. With most fungicide applications Brown spot was reduced, the exception being a single application of Folicur @ R2. Percent protein and oil ,seed size, and seed with disease symptoms did not differ between treatments.
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Created 3/3/06 by B. Potter with assistance from M. Werner.