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John Trey Rogers III, Ph.D.

517-353-0136
rogersj@msu.edu
Professor, Coordinator - Sports Turf and Golf Turf Management Programs; Turfgrass Research - Golf course renovations
Coordinator - Sports Turf and Golf Turf Management Programs; Turfgrass Research - Golf course renovations
MSU Turf Diseases

Published on July 27, 2012
MSU Turf Diseases.net is intended to help you learn the key identification characteristics of common and not-so-common turfgrass diseases found in Michigan and the Midwest.
2007 MSU Turfgrass Research Projects

Published on May 29, 2015
2006 MSU Turfgrass Research Reports

Published on May 29, 2015
2008 MSU Turfgrass Research Reports

Published on May 29, 2015
2009 MSU Turfgrass Research Reports

Published on May 29, 2015
MSU Turfgrass Research Reports

Published on May 29, 2015
2005 MSU Turfgrass Research Reports

Published on May 29, 2015
MSU Turf Insects

Published on May 6, 2015
MSU Turf Weeds ID & Control

Published on December 16, 2013
Easily learn key identification characteristics of common and not-so-common turfgrass weeds found in lawns, golf courses, athletic fields and sod farms in Michigan and the Midwest.
GDDTracker 4.0

Published on May 6, 2015
Improved degree-day maps on Enviroweather

Published on April 19, 2017
New maps provide more accurate and extensive growing degree-day information to users making pest and crop decisions.
Warm, dry weather causes heat tracking in lawns

Published on August 7, 2015
Mowers and other repetitive movement can leave tracks on lawns during hot, dry weather.
Controlling annual bluegrass seedheads on golf courses

Published on April 3, 2019
Growing degree-days have accumulated very slowly this year, but within the next week many areas in lower Michigan will be in the optimum application window for applying plant growth regulators to control annual bluegrass seedheads on golf courses.
Hot, dry weather impacts fall turfgrass management

Published on October 3, 2017
Weed, disease and insect control and fertilizer applications are all being affected by the hot, dry weather in September.
Turfgrass pest and disease diagnostic services offered free to northern Michigan turf managers

Published on July 2, 2015
The Northwest Michigan Horticulture Research Center is now accepting turf samples for insect and disease diagnoses.
New growing degree-day maps on Enviro-weather

Published on May 24, 2016
Interpreting the newly revised growing degree-day maps on MSU Enviro-weather.
How to choose and when to apply grub control products for your lawn

Published on April 13, 2018
Not all the grub control products on store shelves will be effective this spring. Here’s how to choose and use the right one for your lawn.
European chafer grubs are ravaging Upper Peninsula lawns and golf courses

Published on May 12, 2017
Make sure you are using the appropriate timing and treatments when controlling European chafer grubs in turf.
Conditions are favorable for pink snow mold development

Published on April 5, 2017
Microdochium patch, or pink snow mold, is active on golf courses and may require treatment.