High Phosphorus Applications Influence Soil-available Potassium and Kentucky Bluegrass Copper Content

Measuring sod strength of Kentucky bluegrass and Supina bluegrass

The extent of root, rhizome, and/or stolon growth determines turfgrass sod maturity. In 1998, at Michigan State University, the Calrochan Sod Puller (CSP) was developed to measure the force necessary to tear a piece of sod. The CSP uses a battery powered hydraulic pulley to provide a consistent pulling force, and is attached to a load cell. In August 1999, sod strength measurements of different...

Late Fall Fertilization of Kentucky Bluegrass

not result in higher color ratings in the spring and resulted in inefMany turfgrass managers apply a portion of the total yearly N to cool-season turfgrasses in the late fall (November). The purpose of this field study was to compare fertilization programs with and without N applications in November using both slow-release and soluble N sources. Turfs of two different cultivars of Kentucky blue...

Predicting soil potassium content

A linear mixed model, with non-stationary mean and covariance, for soil potassium based on gamma radiometry K. A. Haskard, B. G. Rawlins, and R. M. Lark Rothamsted Research, Harpenden, Hertfordshire, AL5 2JQ, UK British Geological Survey, Keyworth, Nottingham NG12 5GG, UK Received: 29 January 2010 – Accepted: 2 March 2010 – Published: 16 March 2010 Correspondence to: R. M. Lark (murray.lark@bbs...

New Varieties of Kentucky Bluegrass for

Denitrification Losses from Kentucky Bluegrass Sod

Denitrification may represent an important mechanism in the fate of N applied to turf. Denitrification losses were directly measured from fertilized 'Baron' Kentucky bluegrass (Poa pratensis L.) sod samples sealed in acrylic chambers using the acetylene inhibition technique. Losses were correlated with soil texture, percent soil sat· uration (SAT), and temperature. Losses from turf on a Hadley ...