Soybean Fungicide Research Results
Iowa State says there is some fungicide resistance and both newer and multiple modes of action products give better results.
"Average yield in untreated plots was 54.9 bu/A. Yield response to fungicide was statistically significant, and the yield response ranged from 0.8 to 7.4 bu/A "
Re: Soybean Fungicide Research Results
Corn is often well into black layer before leaf loss is yield damaging. And so dependent on August weather.