Is this a question that some of you have been asking yourself? You probably put down your preventative snow mould application over 6 weeks ago. Since then we have had a lot of rain and some pretty mild temperatures.
I don’t have a definitive answer to the question posted above, but Dr. Paul Koch, University of Wisconsin looked into this question as part of his PhD work. He compared iprodione, chlorothalonil on their own and a tank mix of iprodione and chlorothalonil with and with out snow cover. Throughout the winter he took cup cutter samples and analysed fungicide concentrations on those samples. (more…)
ONturf 