Phosphites and microdochium patch

Phosphite-based fungicides and fertilizers are known to suppress microdochium patch in additon to other diseases. Although phosphites do not provide complete control of microdochium patch, they seem to be effective when applied every 14 days alone in some situations and in combination with rolling five days per week. Phosphites also improve performance of some conventional fungicides. Unfortunately, it is difficult to compare the rates of phosphite applicaton for microdochium patch suppression between each of the various phosphite-based products due to…