by Bill Kreuser | May 5, 2020 | Uncategorized
By Bill Kreuser, PhD We first started talking about PGR growing degree day (GDD) models back in 2008. These models use daily average air temperature to estimate PGR longevity and help schedule PGR re-application events. The original model was limited to Primo Maxx...
by Bill Kreuser | Apr 15, 2020 | Uncategorized
By Bill Kreuser, PhD Turfgrass response to nitrogen fertilizer depends on many factors like temperature, sunlight, water availability, root health, and soil compaction. Some factors like soil water content and compaction can be altered by turf managers with irrigation...
by Bill Kreuser | Feb 18, 2020 | Uncategorized
By Bill Kreuser, PhDFor twelve years now, I’ve been talking and writing about using growing degree day (GDD) models to schedule plant growth regulator (PGR) applications. But GDD models have many other uses in turf management. For example, there are models to predict...
