Potassium for Turfgrass: interview with Dr. Larry Stowell of PACE Turf
Research, Teaching, and Speaking in Tennessee

Chemical Fertilizer Programs for Sand Based Rootzones - the 1 minute version

N-adelaideLast week at the Tennessee Turfgrass Association conference I gave a 30 minute presentation with the title Chemical Fertilizer Programs for Sand Based Rootzones. But this topic doesn't always require 30 minutes to explain - I like to distill this topic into the most important principles. There is plenty of experimental and empirical evidence to show that these four principles, if followed, will give excellent results.

  1. Apply the right amount of nitrogen
  2. Ensure soil pH is more than 5.5 and less than 8.3
  3. Ensure soil potassium (as measured by the Mehlich 3 extractant) is kept above 35 ppm
  4. Ensure soil phosphorus (as measured by the Mehlich 3 extractant) is kept above 18 ppm

The End (of the 1 minute version of this topic)

If you are especially interested in mineral nutrition for turfgrass or soil nutrient analysis for sand rootzones, you may want to read or watch some of these more lengthy expositions.

Simple Fertilization: Use the Nutrients Already in the Soil, from the Hawaii GCSA newsletter

Minimum Levels for Sustainable Nutrition (MLSN) with PACE Turf

PACE Turf Potassium Sufficiency Video, on Youtube

Soil Testing: It Does Not Have to be Difficult, on Youtube

Creating an Excellent Playing Surface: Managing the Plant, especially section 2 regarding nitrogen application

Does Potassium Fertilizer Really Increase Roots?, from TurfNet Monthly

And for those who really want to reduce P and K, consider the implications of The Park Grass Experiment and the Fight Against Dogma, written with Dr. Frank Rossi and published in the USGA Green Section Record


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