In with the New: BMPs for Regrassing Cool-Season Turf

Transcription

1 In with the New: BMPs for Regrssing Cool-Seson Turf Michel Burs, CSFM John Ingugito, Ph.D. Better wer Aesthetics - uniform, striping, finer texture, drker color Option for lower height of cut Less inputs - wter, pesticides Primry Concerns Regrding Regrssing Developing Renovtion Strtegies to Trnsition to More Sustinble Turfgrsses Killing lot of turfgrss t once Cost / lbor Plyer inconvenience Fcility closure/lost revenue Consistency of germintion nd development Po nnu reinfesttion John Ingugito, Zoë Espond, Json Henderson, nd Kevin Miele Wht we know bout regrssing Non-selective herbicide required Intrseeding into live stnds with only cultivtion or PGRs unsuccessful (Kendrick nd Dnneberger, 2005; Reicher nd Hrdebeck, 2002; Buer et l., 2012) Seeding timing is criticl ABG competition gretest in September nd October versus June or August (Murphy et l., 2005) CBG germintes t higher soil temps thn ABG (Engel, 1967) Uncertinty in Key Steps Apply non-selective herbicide Aggressive cultivtion Drg to brek up cores Remove ny excessive debris Apply seed Apply strter fertilizer Lightly roll Irrigte lightly nd frequently Post-renovtion mgmt ABG control 1

2 5/1/2018 Development of Firwy Renovtion Strtegies to Trnsition to More Sustinble Turfgrsses Development of Firwy Renovtion Strtegies to Trnsition to More Sustinble Turfgrsses 1. Glyphoste ppliction timing nd seedbed preprtion method on efficcy 1. Glyphoste ppliction timing nd seedbed preprtion method on efficcy 2. Seedbed preprtion nd seeding method on CBG estblishment in mixed stnd firwys 2. Seedbed preprtion nd seeding method on CBG estblishment in mixed stnd firwys 3. Effect of sesonl renovtion strtegies nd post-renovtion mngement prctices 3. Effect of sesonl renovtion strtegies nd post-renovtion mngement prctices Mterils nd Methods Core Cultivtion + Verticut fter Spry 2015 Glyphoste Efficcy 0 DAS Seed bed prep method None Core cultivtion Verticutting (VC) Core + VC 5 DAS UTC 7 DAS Glyphoste timing (3.0 lbs.i. per cre) 3 DAS 7 dys before seed bed prep DAS = dys fter ws spryed Mterils nd Methods Development of Firwy Renovtion Strtegies to Trnsition to More Sustinble Turfgrsses 1. Glyphoste ppliction timing nd seedbed preprtion method on efficcy 1 DAS Study Design Non-selective erdicnt Glyphoste only pplied 4 dys before seeding Gly + Dzomet pplied 3 dys before seeding Seed bed prep method (3 dys before seeding) 2. Seedbed preprtion nd seeding method on CBG estblishment in mixed stnd firwys None Core cultivtion Verticutting Seeding method 3. Effect of sesonl renovtion strtegies nd post-renovtion mngement prctices Slit seeder Spike seeder Drop seeder 2

3 Reserch Loctions 2014 Wethersfield CC 2015 Mohegn Sun GC Tretment Timeline Tretment Dy Glyphoste Mondy 8 Sept 14 Sept Core cultivtion Tuesdy 9 Sept 15 Sept Verticutting Tuesdy 9 Sept 15 Sept Aln Woodwrd Wethersfield, CT Chris Ellsmore Bltic, CT Dzomet Tuesdy 9 Sept 15 Sept Seeding Fridy 12 Sept 18 Sept Dy 1: Glyphoste Appliction Dy 2: Verticutting 3.0 lbs.i. cre -1 Grden SwingWing 2-mm bldes 2-inch spcing 2 directions Dy 2: Verticutting Dy 2: Core Cultivtion 1- inch depth ToroProCore 0.5-inch hollow tines 1.5 x 2.0-inch spcing 2-inch depth 3

4 Dy 2: Incorporting Cores Dy 2: Finished Seedbed Dy 2: Dzomet Appliction Dy 5: Drop Seeder Dzomet (Bsmid) 257 lbs cre -1 Irrigtion 1.0 inch dy of ppliction 0.5 inch 2 nd dy fter 0.2 inch 3 rd dy fter Creeping Bentgrss (0.5 lb 1000ft -2 ) 2 directions M Brrcud Dy 5: Spike Seeder Dy 5: Slit Seeder 4

5 Green Cover (%) Green Cover (%) Seeder Type Drop 90 Spike Slit Sep 21 Sep 1 Oct 11 Oct 21 Oct 31 Oct DAIT DAS % Green Cover: Influenced by Herbicide, Seeder Type nd Core Cultivtion Slit Seeder + dzomet 4 DAIT 18 Sep 2015 (dy of seeding) % Green Cover: Influenced by Herbicide, Seeder Type nd Core Cultivtion + dzomet % Green Cover: Influenced by Herbicide, Seeder Type nd Core Cultivtion + dzomet Slit Seeder Slit Seeder 14 DAIT 28 Sep WAS 6 Oct 2015 % Green Cover: Influenced by Herbicide, Seeder Type nd Core Cultivtion + dzomet % Green Cover: Influenced by Herbicide, Seeder Type nd Core Cultivtion + dzomet Slit Seeder Slit Seeder 4 WAS 14 Oct WAS 27 Oct

6 % Green Cover: Influenced by Herbicide, Seeder Type nd Core Cultivtion + dzomet % Green Cover: Influenced by Herbicide, Seeder Type nd Core Cultivtion + dzomet Slit Seeder Slit Seeder 7 WAS 3 Nov WAS 13 Nov 2015 Herbicide nd Seeder Type Effects on Bentgrss Estblishment dzomet + dzomet + Turfgrss Composition Turfgrss Composition Drop Spreder Slit Seeder Annul Bluegrss dzomet + dzomet + Creeping Bentgrss Spike Seeder Bentgrss Cover (%) Seedbed Prep 2014 Bentgrss Cover (%) Seeder Type Oct (5 WAS) Oct (5 WAS) Bentgrss Cover (%) b Bentgrss Cover (%) b 0 None Verticut Core Cultivte 0 Drop Spike Slit 6

7 Bentgrss Cover (%) Seeder Type & Erdicnt 2015 Bentgrss Cover (%) Spike b Drop Slit only 27 Oct (5 WAS) b * * * + dzomet Bentgrss Cover (%) Seeder Type & Erdicnt 2015 dzomet + dzomet + Drop Spreder 27 Oct (5 WAS) Slit Seeder Spike Seeder dzomet + Annul Bluegrss Cover (%) Seedbed Prep & Seeder 2014 Annul Bluegrss Cover (%) B 2 Nov (6 WAS) A Spike Drop Slit None Verticut Core Cultivte B Annul Bluegrss Cover (%) Seedbed Prep & Seeder 2014 No Bent Seed None Verticut 5 WAS 13 Oct 2014 Core Cultivte Annul Bluegrss Cover (%) Seedbed Prep & Seeder 2014 Annul Bluegrss Cover (%) NS 2 Nov (6 WAS) b c bc Spike Drop Slit b b b None Verticut Core Cultivte Annul Bluegrss Cover (%) Annul Bluegrss Cover (%) Erdicnt 2014 & only + dzomet 2014 (38 (5 WAS) DAS) 2015 (45 (6 WAS) DAS) b 7

8 5/1/2018 Annul Bluegrss Cover (%) Erdicnt 2015 Summry September chllenging time for renovtion Verticut No Bent Seed Core cultivtion or Verticutting occsionlly improved CBG estblishment 6 WAS Verticutting lso incresed ABG contmintion 3 Nov 2015 Seeder type hd little effect on bentgrss estblishment Applying bentgrss seed reduced ABG contmintion, regrdless of how it ws pplied Little difference between Slit, Spike, nd Drop seeders Dzomet (257 lbs/a) gretly improved CBG cover nd reduced ABG cover in 2015, but hd no effect in dzomet Sesonl Renovtion Strtegies & Post-renovtion Mngement: Tretments Development of Firwy Renovtion Strtegies to Trnsition to More Sustinble Turfgrsses Timing 1. Glyphoste ppliction timing nd seedbed preprtion method on efficcy 2. Seedbed preprtion nd seeding method on CBG estblishment in mixed stnd firwys August Round up + Bsmid Progrss 3 pt/a WASE September Tuesdy Progrss 4 pt/a WASE Tuesdy Velocity 6 oz/a WASE Fridy Trimmit 1 pt/a 4 WASE; 14d Bensumec 15 pt/a Trimmit + Bensumec 1 pt/a 4 WASE; 14d 15 pt/a 2 WASE 7 WAS 17 WAS September July 7 December 2017 Velocity 6 oz/a August September July + dzomet 2 WASE 21 WAS 11 WAS August None 12 WAS 2 WAS 27 September 2017 Velocity 6 oz/a Herbicide Round up 3. Effect of sesonl renovtion strtegies nd post-renovtion mngement prctices + dzomet Erdicnt July 8

9 September 7 December 2017 July Preliminry Recommendtion September Seeding September chllenging time for renovtion Dy 1: Glyphoste (3 lbs.i. / A) Dy 2: Core cultivtion 0.5 inch tines; 1.5 x 2.0 inch spcing; 2 inch depth Brek-up / return cores Dy 2: Dzomet (257 lbs product / A) Irrigte ccording to lbel for next 3 dys 17 WAS August August September July August 21 WAS July September 12 WAS Progrss 4 pt/a Trimmit 1 pt/a 17 WAS 7 WAS + dzomet 21 WAS Trimmit 1 pt/a + dzomet 12 WAS 11 WAS 7 December dzomet 2 WAS 27 September /1/2018 Dy 4: Slit Seeder At lest 1.0 lb / 1000 ft2 0 9

10 Why In with the new? 10

11 The Environmentl Impct Quotient (EIQ) is formul creted to provide growers with dt regrding the environmentl nd helth impcts of their pesticide options so they cn mke better informed decisions regrding their pesticide selection. Perennil ryegess 661 Annul bluegrss 2662 EIQ Perennil ryegrss cultivrs 11

12 Three methods of renovtion. Done with existing equipment Nondisruptive, quiet nd quick Method 1 Roundup nd wit two weeks s directed by lbel 12

13 15 pounds ryegrss seed nd two pplictions of.5 pounds of nitrogen per 1000 squre feet My 1 My 15 June 11 6 weeks fter seeding Method 2 (Autumn) 13

14 Roundup nd strt renovtion the next dy Use disruption for seed bed. 14

15 Progrss 2 weeks fter seeding 6 weeks Annul bluegrss 15

16 Method 3. Progrss. Verticut, topdress nd seed the next dy 2 pplictions of Progrss, 10 weeks to 100% perennil ryegrss 16

17 Constnt bttle with Annul bluegrss. 9 weeks fter seeding Limiting wter nd fungicides helps, but chemicl control necessry - Progrss, Trimmit, Xonerte 100% perennil ryegrss 17

18 Regrss Sclp low with mower Non selective herbicide Disrupt surfce - erify, verticut (this cn enhnce weed germintion) Topdress Ryegrss seed Fertilize Keep moist Weed control Redy in 6 weeks! Additionl Considertions Thtch mngement Chllenging to drsticlly reduce thtch in one event Medium-term pproch focusing on spring & fll before Seeding rte? Vible bentgrss seed outcompetes Po Cost / benefit Alterntive species Is it worth the effort nd money? Wter restrictions Pesticide restrictions Acknowledgements New Englnd Regionl Turfgrss Foundtion United Sttes Golf Assocition Kevin Miele Wethersfield Country Club Mohegn Sun Golf Club Atlntic Golf & Turf Seed Reserch of Oregon Turfco TIP, Inc. A OK Turf Equipment TPC River Highlnds Brooklwn Country Club Shelter Hrbor Golf Club Dr John Ingugito john.ingugito@uconn.edu Michel Burs, 18