A Replicated Completely Randomized Block Design (CRBD) research study, was conducted by Dr. Joey Young, assistant professor of turfgrass science at Texas Tech University on The Rawls Golf Course in Lubbock, TX in 2016 on an established “TifSport” hybrid Bermuda grass fairway. All plots received soluble fertilizer (20-5-25) at 1 lb/1,000 ft2 and PolyonTM (CR 20-0-20) at 1 lb/1,000 ft2 in early spring. The control plots received no other fertilizer through the growing season. The fertilizer-only plots received Contec DGTM (18-9-18) at 1 lb/1,000 ft2 in early June, and the AZOMITE® plots received the same rate of Contec DG plus 1.2 lb/1,000 ft2 of AZOMITE or 2.4 lb/1,000 ft2 of AZOMITE® at the same time. Soil tests and clipping analysis were conducted several times during the season. Visual turf ratings, light box digital imagery and NDVI instrument readings were used to produce ratio vegetation index (RVI) and spectral reflectance data. At the end of the season, root cores were taken from each plot and washed and dried —
at which point longest root measurements and root mass were recorded.
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Benefits at a Glance: