Tag: PGR GDD ClipVol
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Moving Beyond PGR GDD Intervals
For nearly 15 years, Dr. Doug Soldat and I have been creating growing degree day (GDD) models for plant growth regulators (PGRs) and now DMI fungicides. These sinewave shaped models predict how these routinely applied products affect the relative growth rate of various turfgrass areas. We’ve created models for different…