Foliar fungicide timing and interaction with soybean maturities: Effect on soybean disease suppression and yield
Bruce Potter, University of Minnesota Department of Entomology and Southwest Research and Outreach Center
Summary
A strobilurin fungicide (Headline, BASF Corporation) was applied to a 0.8 and 2.1 maturity soybean at R2, R3 and R5 growth stages and a 2.6 maturity soybean at R1and R3 stages. Yield and quality differences by cultivar were observed. These were not influenced by fungicide at any timing under a low foliar disease, high yield environment. Fungicide applications did influence senescence and incidence of Septoria symptoms. A fungicide timing by cultivar maturity interaction for nodes/plant and pods/plant did not translate to yield.
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Created 3/3/06 by B. Potter with assistance from M. Werner.