Golfdom, October 2016

4 and plan to implement control strategies over multiple years to control rough bluegrass AN INTEGRATED STRATEGY Obviously multiple strategies are required to effectively control rough bluegrass In shaded areas or in areas that receive frequent rainfall control will be more difficult because the cultural mechanisms for control already have been restricted If rough bluegrass doesnt severely decline during summer consider nurturing it When possible improving drainage and limiting irrigation should favor other species over rough bluegrass if you want to control it Our desirable species also are more tolerant to traffic than rough bluegrass so dont be afraid to get physical Be aware that sanitation is important during aeration vertical mowing and even mowing to limit unintentional propagation Mow or cultivate infested areas last if possible For large infestations consider beginning a renovation with Velocity applications in midsummer followed by multiple glyphosate applications in late summer before seeding Then apply Velocity as soon as one week following seeding at least with creeping bentgrass to limit rough bluegrass reestablishment For smaller infestations consider spot treating with glyphosate followed by reseeding or the physical removal of rough bluegrass followed by spot sodding Alternatively utilize multiple spot applications of Velocity beginning in spring to midsummer and interseed with creeping bentgrass Kentucky bluegrass or perennial ryegrass beginning no sooner than two weeks following the last treatment Rough bluegrass control is possible by persistently implementing a combination of these strategies However if you achieve successful control dont forget about Poa triv Much like Arnold Schwarzenegger in The Terminator it will be back with sequels TERMINATING POA TRIV Seven time winner of the national Folio Award for editorial excellence EDITORIAL ADVISORY BOARD Conrad Broussard CGCS ST JAMES PLANTATION Southport N C Julio Diaz PUNTACANA BEACH AND GOLF CLUB Punta Cana Dominican Republic Damon Di Giorgio FIELDSTONE GOLF CLUB Wilmington Del Chris Erickson DEL MAR COUNTRY CLUB San Diego Calif David Hay CGCS INDIAN WELLS COUNTRY CLUB Indian Wells Calif Bill Irving WOLF CREEK GOLF CLUB Olathe Kan Rees Jones REES JONES INC Montclair N J Tim Kreger EXECUTIVE DIRECTOR CAROLINAS GCSA Cole Thompson Ph D is an integrated turfgrass management specialist at the University of Nebraska Lincoln You may reach Cole at cole thompson@ unl edu for more information References Bell G E Odorizzi and T Danneberger 1999 Reducing populations of annual bluegrass and roughstalk bluegrass in creeping bentgrass fairways A nutritional approach Weed Technol 13 4 829 834 Hurley R H 2003 Rough Bluegrass Pages 67 75 in Turfgrass Biology Genetics and Breeding In Casler M D and R R Duncan eds John Wiley and Sons Inc Hoboken NJ Lycan D W and S E Hart 2006 Cool season turfgrass reseeding intervals for bispyribac sodium Weed Technol 20 2 526 529 Reicher Z J L W Nees and M D Levy 2011 Roughstalk bluegrass contamination in creeping bentgrass seed lots Appl Turfgrass Sci doi 101094 ATS 2011 0422 01 BR Rutledge J D Morton D Weisenberger and Z Reicher 2010a Bispyribac sodium sulfosulfuron and interseeding creeping bentgrass for long term control of roughstalk bluegrass Hort Sci 45 2 283 287 Rutledge J D Weisenberger and Z Reicher 2010b Response of seedling roughstalk bluegrass and creeping bentgrass to bispyribacsodium or sulfosulfuron Hort Sci 45 2 288 292 Thompson C J Fry M Kennelly M Sousek and Z Reicher 2014 Seasonal timing of glyphosate application influences control of Poa trivialis Appl Turfgrass Sci doi 102134 ATS 2013 0044 BR Thompson C M Sousek Z Reicher J Fry and M Kennelly 2016 Evaluation of selective herbicide combinations and paclobutrazol for rough bluegrass control Crop Forage Turfgrass Manage doi 102134 cftm20150213 Tom Lively CGCS TPC SAN ANTONIO San Antonio Texas Tom Marzolf FAZIO GOLF COURSE DESIGNERS Hendersonville N C Roger Meier VALHALLA GOLF CLUB Louisville Ky Jeff Plotts TPC SAWGRASS Ponte Vedra Beach Fla Jackson Reiswig CORAL CREEK CLUB Placida Fla Steve Sarro PINEHURST COUNTRY CLUB Denver Colo Alex Stuedemann TPC DEERE RUN Silvis Ill Andy Wilson BETHPAGE STATE PARK GOLF COURSE Farmingdale N Y Ad Index Companies featured in this issue ADVERTISER PAGE AMVAC 21 23 BASF 1 EOP2 EOP10 Bayer EOP11 EOP16 Buffalo Turbine 26 Control Solutions 3 EOP12 FMC Corp EOP13 Green Jacket 26 Jacobsen 7 John Deere 25 Klingstone 33 Nufarm CV2 EOP14 PBI Gordon CV3 5 Plant Food Company Inc 33 Polylast Systems 9 Rain Bird 13 SipcamRotam 11 EOP15 Smithco CV4 Stevens Water Monitoring Systems Inc 4 Syngenta CVTIP EOP8 9 Turfco 24 30 Wilbur Ellis 27 This index is provided as an additional service The publisher does not assume any liability for errors or omissions October 2016 Golfdom 55 Golfdom com