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Five years ago I wrote about my workflow to keep up with turfgrass information. From 2012, Productivity 1: what’s my workflow? and Productivity 2: my turfgrass information workflow. In the first part, I explained that I used

Turfgrass growth is affected by temperature. The temperature-based turfgrass growth potential (GP) is an easy way to look at how the actual temperature is related to the optimum temperatures for growth.

The MLSN guidelines were developed from a large dataset of soil tests collected from good-performing turf. You’re probably familiar with the MLSN guideline as a minimum level, with fertilizer recommended to make sure the soil doesn’t drop below the guideline.