Soil Nutritional Guidelines
The BCSR and SLAN approaches to turgrass fertilizer management are no longer recommended by PACE Turf. Refer to the more contemporary Minimum Levels for Sustainable Nutrition (MLSN) guidelines for the recommend approach to managing turfgrass nutrient needs.
The “desired” guideline values were derived based on three different sources of information: sufficiency (SLAN) guidelines, balance (BSCR) guidelines and PACE data collected from good performing golf course greens, tees and fairways. Soil analysis using Melich III extraction by Brookside Laboratories, New Knoxville, OH. Please note that the ppm desired values for potassium, calcium and magnesium are based on a BSCR analysis, using the average TEC values of 9.9, 14.5 and 24 for greens, tees and fairways, respectively. If your TEC values are lower than this, the desired ppm levels of K, Ca and Mg should be concomitantly lowered based on the formulae presented for BSCR deficit correction in PACE Insights 9:9 9 (132 KB pdf).
by Wendy Gelernter, Ph.D. and Larry Stowell, Ph.D., CPAg
