Tennessee Turfgrass - February / March 2018

February/March 2018

The Official Publication of the Tennessee Turfgrass Association, the Tennessee Valley Sports Turf Managers Association and the Tennessee Golf Course Superintendents Association

Doveweed...

Coming to a Turf Area Near You

Plus, Highlights from the 52nd Annual TTA Conference and Tradeshow

The Official Publication of the Tennessee Turfgrass Association, Tennessee Valley Sports Turf Managers Association and the Tennessee Golf Course Superintendents Association

TABLE OF CONTENTS February/March 2018

FEATURED ARTICLES

14 23

Cover Story — Doveweed...

Coming to a Turf Area Near You Recent Event — Highlights from the 52nd Annual TTA Conference and Tradeshow

14

DEPARTMENTS

4

From the TTA President, Jason Pooler

6

From the TVSTMA President, Martin Kaufman

8

From the MTGCSA President, Brad Marcy

10

News from TTA

12

TTA Membership Application

13

Calendar of Events

29

University of Tennessee Turf Team

30

Index of Advertisers

30

TENNESSEE TURFGRASS February/March 2018

23

From the TTA Presid ent

Jason Pooler

COME ON,

SPRING R

ain, rain, rain. With all the rain we got here in West Tennessee this February, I’m ready for spring to get here and get this year started.

To those of you I have not yet had the honor to meet, I would like to introduce myself. I am co-owner and president of Tri-Turf Sod Farms, Inc., in Paris, TN, with my lovely wife Tina and my two sons Jacob (17) and Preston (13). I’m very lucky to have a family that is understanding and supportive of the long hours we turf people must put in.

If you were not able to attend the 52nd Annual Conference and Tradeshow in January that was organized by the TTA board, the TTA education committee, and Executive Director Melissa Martin, you missed a good one. The classes were very informative, and the vendors put on a display of their products. Without you

T

s s i o n of i m e h

and your support, we wouldn’t be growing like we are. Thank you to all. This year’s conference had record attendance. It’s great to continue to see our organization keep growing, so please spread the word and invite friends and colleagues to become members.

I would like to recognize Theo Lankford for his leadership of the association over the past two years and his commitment since becoming a board member in 2011.

Theo has brought many big ideas into play for our association, and I have big shoes to fill, but have learned a lot from him and our past presidents.

Special thanks to outgoing board member Mickey Lovitt for his commitment and dedication to the association. I want to welcome to the board Ryan Story with Vanderbilt University, Bart Cash with Buy Sod, and Darren Seybold with the

University of Tennessee. Our board volunteers their time and effort to make our association better. I can’t say enough how much we appreciate their dedication to our association.

Thank you for the opportunity to serve as your president for the next two years.

I welcome any comments or suggestions to better our association. If you would like to contact me with ideas, please call my mobile at 731-336-8932 or contact Melissa Martin (our TTA executive director) at 615-928-7001. Let’s make 2018 a productive and profitable season for everybody in our industry.

Happy Growing!!

Jason Pooler

2018–2019 TTA President

the T e n ne ssee Tur fg r a s s A s s o c i at

ion

To promote the turfgrass industry through education, scholarship and research.

6

TENNESSEE TURFGRASS February/March 2018 Email TTA at: info@ttaonline.org

The Official Publication of the Tennessee Turfgrass Association, the Tennessee Valley Sports Turf Managers Association and the Tennessee Golf Course Superintendents Association

Tennessee Turfgrass is the official publication of The Tennessee Turfgrass Association 400 Franklin Road Franklin, Tennessee 37069 (615) 465-6339 info@ttaonline.org www.ttaonline.org Published by Leading Edge Communications, LLC 206 Bridge Street Franklin, Tennessee 37064 (615) 790-3718 Fax (615) 794-4524 Email: info@leadingedge communications.com Editor Dr. James Brosnan TTA OFFICERS President Jason Pooler Tri-Turf Sod Farms, Inc. (731) 642-3092 Vice President Doug Ward Belle Meade C.C. (615) 292-6752 Secretary/Treasurer Chris Sykes Tellico Village (865) 458-5408 Past President Theo Lankford Kormac, LLC (615) 519-2701 Executive Director Melissa Martin Tennessee Turfgrass Assn.

(615) 928-7001 TTA 2018 BOARD OF DIRECTORS Ryan Blair, CGCS Bart Cash Cal Hill Joe Hill Jeff Kuhns Timothy Long Bill Marbet Jason Sanderson Darren Seybold Ryan Storey Paul Webb Scott Wicker TTA ADVISORY MEMBERS OF THE BOARD Bill Blackburn Dr. Jim Brosnan Dr. Brandon Horvath Lynn Ray Jeff Rumph, CGCS Dr. Tom Samples Dr. John Sorochan Dr. Wes Totten

From the TVSTMA President

Martin Kaufman

Welcome to

Spring in the Southeast!

T

hanks to Connor Schutzman, CSFM, for his leadership as president in 2017. We appreciate his service this year as past president.

Even more gratitude goes to Thomas Trotter for his faithful leadership on the Tennessee Valley Sports Turf Managers Association (TVSTMA) board as he gives way to Connor. I am excited to announce that the February 7th meeting at Autozone Park, home of the Memphis Redbirds, went well. Thanks to Ben Young and Brian Bowe for hosting the 32 folks who attended. In addition, thanks to Dr. Chrissie Segers (UT Martin) and Mr. Michael Richards (MSU) for their presentations.

The next event is the main event at

Ridley Park, Columbia, TN, on July 25th.

The TVSTMA will host a field day with Byran Farris and the city of Columbia.

This promises to be a day of fun, networking, and education, in addition to the products and equipment demonstrations our commercial partners will showcase all over Ridley Park. Please plan now to attend by emailing sectres@tvstma.org.

Our autumn event will be hosted by Cameron Richards and the Tennessee Smokies in Kodak, TN, on November 7th.

As you mark your calendars for these dates, please keep in mind why the TVSTMA exists. The TVSTMA chapter has been established as a vehicle for sports turf professionals to network

locally with their peers and to meet regularly for educational opportunities. The TVSTMA is affiliated with the Sports Turf Managers Association (STMA).

What Is the Purpose of the TVSTMA? • To serve the sports turf profession in southern Kentucky, Tennessee, and northern Alabama • To promote the art of managing the sports turf function • To encourage professional dialogue and development in sports turf management • To encourage and develop member ship in the TVSTMA and STMA I encourage each of us to think about what we have to offer the industry and make a commitment to serve. Sometimes serving simply means participating or being available. Other times it means proactively doing something like encouraging others to serve on the board, hosting an event, presenting a subject, or promoting the chapter. Please evaluate what you can do to serve the industry.

Martin Kaufman, CSFM 2018 TVSTMA President

8

TENNESSEE TURFGRASS February/March 2018 Email TTA at: info@ttaonline.org

From the MTGCSA P resident

Brad Marcy

Looking Forward to a

Great Year As

another spring is upon us and some of us are still trying to wrap up pre-emergent applications, one can’t help but be optimistic about the upcoming season. The winter was tough, and hopefully we all made it through it unscathed. Just as we are looking forward to each of our own upcoming seasons, we as a board for the

10

MTGCSA are looking forward to a great lineup of events for this year. We are trying to implement some new ideas and are coming through on some ideas that were implemented last year.

We are going to have our typical fourlocation educational sessions this year. First off, we will be visiting the Nashville Golf and Athletic Club in April. I really wanted us to get out there before they host the Nashville Golf Open this year, which has been moved up in the Web.com tour schedule to May 24th. I volunteered there last year for the event and had a wonderful time.

Next, we will be going to the Westhaven Golf Club in May. Westhaven is a great course and a terrific location for an educational session. The last time we were there, the hospitality was great, and we know it will be just as good this time.

Then we will be throwing a curve in the lineup by having a meeting at Ellington Agricultural Center, hosted by Dr. Alan Windham. This will include a lab tour, along with other educational components. Since we are not at a golf course for this event, we are planning a social event at a local eatery afterward.

Lastly, we will finish up the educational sessions at Bluegrass Yacht and Country Club in November. This is always a great educational session. It might be the best food that we get at any of our events. The weather can be a little hit or miss for golf, but always a great course to get out and play if the sun is shining.

Last year, we were keeping attendance at all events and kept score. The top 16 scoring individuals have been placed into

TENNESSEE TURFGRASS February/March 2018 Email TTA at: info@ttaonline.org

what we are calling The Participation Challenge Cup. This is a match play event that will take place at The Grove in April, and we will reveal the results at the first meeting. We plan on this being an annual event and hopefully a contagious one that West and East join in to make it statewide in the future.

The social event is going to be at the Nashville Sounds Stadium, sponsored

by Bill Blackburn with Smith Turf & Irrigation. It will be June 8th vs. Tacoma.

This is always a great event, so come out and support the folks that are supporting us.

In October, we are planning an equipment techs event. This is a new event for us, and I hope that everyone will send their technicians. Our equipment managers are valuable members of our teams, and we need to make sure that they are being given quality educational opportunities, just like we do for ourselves. We think this will be a wonderful educational opportunity.

Lastly, we will have our annual Scholarship and Research Tournament. We have been working on this, and I believe that we are going to have a fantastic location.

We are always trying to get some new faces to the meetings. If you know someone who has not been a member of the MTGCSA, then tell them to come to a meeting. We will be happy to spot you for the first meeting.

I hope that everyone has a great golfing season.

Brad Marcy

2018 MTGCSA President

Ne w s from TTA

———— Announcing TTA’s ————

Officers & Directors for 2018 President Jason Pooler

Tri-Turf Sod Farms, Inc. Paris, TN (731) 642-3092 triturfsodfarms@ bellsouth.net

Vice President Doug Ward

Belle Meade Country Club Nashville, TN (615) 292-6752 bellemeadeturf@ bellemeadecc.org

Secretary/ Treasurer Chris Sykes

Tellico Village Loudon, TN (865) 458-5408 csykes@tvpoa.org

Directors Ryan Blair, CGCS

Jeff Kuhns

Darren Seybold

Bart Cash

Timothy Long

Ryan Storey

Holston Hills Country Club Knoxville, TN (865) 523-7804 rblair@holstonhills.com Buy Sod Eagleville, TN (615) 946-1023 bcash@buysod.com

Cal Hill

WinField United Signal Mountain, TN (901) 412-0121 cchill@landolakes.com

Joe Hill

Retired Maryville, TN (865) 567-4210 kjhill0802@gmail.com

Montgomery Bell G.C. Burns, TN (615) 405-1381 jeff.kuhns@tn.gov

Smith Turf & Irrigation Knoxville, TN (704) 512-9119 timothy.long@smithturf.com

Bill Marbet

Southern Athletic Fields Columbia, TN (931) 380-0023 bill@safdirt.com

Jason Sanderson

Class A Superintendent Cherokee Country Club Knoxville, TN (865) 388-9766 jasanderson12@gmail.com

UT Sports Facilities Knoxville, TN (865) 974-0911 dseybold@utk.edu Vanderbilt University Nashville, TN (615) 343-6694 ryan.storey@vanderbilt.edu

Paul Webb

Humboldt Golf & C.C. Humboldt, TN (731) 694-3373 pwebb00@hotmail.com

Scott Wicker

Black Creek Club Chattanooga, TN (423) 822-2582 swicker@blackcreek club.com

TTA Advisory Members of the Board Past President Theo Lankford Kormac, LLC Brentwood, TN (615) 519-2701 theo@kormac.com

Executive Director Melissa Martin

Tennessee Turfgrass Assn.

Franklin, TN (615) 928-7001 Cell: (334) 324-4540 melissa@ttaonline.org 12

Bill Blackburn

Lynn Ray

John Sorochan, Ph.D.

Jim Brosnan, Ph.D.

Jeff Rumph, CGCS

Wesley Totten, Ph.D.

Brandon Horvath, Ph.D.

Tom Samples, Ph.D.

Smith Turf & Irrigation Co. Nashville, TN (615) 373-9400 bill.blackburn@smithturf.com

The University of Tennessee Knoxville, TN (865) 974-8603 jbrosnan@utk.edu

The University of Tennessee Knoxville, TN (865) 974-2975 bhorvath@utk.edu

Golf Management Group Brentwood, TN (615) 373-9400 lraygmg@raskinco.com

Ladd’s Gatlinburg, TN (865) 680-4836 jrumph@bobladd.com

The University of Tennessee Knoxville, TN (865) 974-2595 tsamples@utk.edu

TENNESSEE TURFGRASS February/March 2018 Email TTA at: info@ttaonline.org

The University of Tennessee Knoxville, TN (865) 974-7324 sorochan@utk.edu

The University of Tennessee at Martin Martin, TN (731) 881-7936 wtotten@utm.edu

TENNESSEE TURFGRASS ASSN. ———— MEMBERSHIP APPLICATION ———— Membership applications can be submitted at any time during the year.

For more information, please contact the TTA Office at (615) 928-7001 and email the form to info@ttaonline.org.

You can join online by going to www.ttaonline.org.

Please print or type the following information as you would like it to appear in the annual directory.

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Zip _________________________________

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Fax (_____)____________________________________________

Email Address _______________________________________________________________________________________________

Additional individuals from same facility requesting membership: Name______________________________________________

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Membership Categories:

Regular Membership.......................................................................................................................................

$50.00

Student Membership.......................................................................................................................................

$10.00

Retired Membership........................................................................................................................................

No Dues

Payable Dues:

# of Regular Memberships ........................................................................................................... ______ x $50.00 = $_ _____________

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Please make check payable to: Tennessee Turfgrass Association Please send check and completed form to:

Tennessee Turfgrass Association • 400 Franklin Road • Franklin, TN 37069 TENNESSEE TURFGRASS ASSOCIATION • TENNESSEE VALLEY SPORTS TURF MANAGERS ASSOCIATION • Tennessee Golf Course Superintendents Association

13

Cover St ory

Dove weed...

Coming to a Turf Area Near You

14

TENNESSEE TURFGRASS February/march 2018 Email TTA at: info@ttaonline.org

Photo 1. Doveweed has grass-like leaves, but it is in the spiderwort family.

By Jeffrey Derr, PhD, and Adam Nichols, Virginia Tech, Hampton Roads Ag. Research and Extension Center, Virginia Beach

I

first started studying doveweed (Murdannia nudiflora) about ten years ago, when it began appearing at some of the container nurseries. This weed can then move into—and become a weed problem in—landscape beds through the planting of contaminated nursery plants. In cooperation with a fellow weed scientist at North Carolina State University, Dr. Joe Neal, I worked out control programs for this new weed in nursery production and in maintenance of landscape ornamentals. More recently, I have been receiving questions about controlling this weed in turf areas, prompting additional research by Adam and me at the research station. This is a weed that is spreading in the region.

Doveweed biology Although it resembles grasses, doveweed is a summer annual monocot weed in the spiderwort family (Commelinaceae), which includes other problem weeds, such as tropical spiderwort (Commelina benghalensis), Asiatic dayflower (Commelina communis), spreading dayflower (Commelina diffusa), and marsh dayflower (Murdannia keisak).

Members of the spiderwort family are monocots, having one seed leaf (cotyledon) like grasses. Doveweed is native to India, infests crops in many countries, and has been considered one of the worst weeds of the Commelinaceae family worldwide.

Photo 2. Doveweed has small, purplish-white flowers.

Doveweed has become a common weed in southeastern United States nursery crops, cotton, soybeans, and turfgrass. It ranges from Texas to North Carolina, and it has since moved into the midsouth. It is common in wet areas, such as drainage ditches and low areas with standing water, but it also will grow in cultivated ground where doveweed forms dense mats that compete with crops.

Doveweed is a difficult weed to control, as are other members of Commelinaceae,

Photo 3. Doveweed produces seed in small capsules.

doveweed and Asiatic dayflower to increase in density. Also, many preemergence herbicides will not control doveweed, allowing this weed to dominate treated areas. Consequently, in cropping systems, populations of doveweed and related species have increased.

It is important to separate doveweed and other members of the Commelinaceae family from the grass family.

Preemergence herbicides effective for the control of annual grasses, such as

such as Asiatic dayflower. One possible reason that doveweed and others members of the spiderwort family are increasing is that these species have a degree of tolerance to glyphosate (Roundup, others).

However, they do not have unlimited tolerance to glyphosate, as higher rates will suppress or control them. And yet, the lower rates of glyphosate used in Roundup-Ready crops will not adequately control these weeds, while controlling other sensitive weed species, allowing

Table 1. Postemergence doveweed control in a field trial using a single application in 2016.

1

Treatment Nontreated

2

Triplet

Percent doveweed control July 19

July 27

Aug. 5

Aug. 15

8 DAT

16 DAT

25 DAT

35 DAT

1

0%

0%

1%

1%

3.5 pint/acre

1

19%

35%

23%

14%

3.5 pint/acre

7

3%

11%

14%

6%

3

4-Speed XT

4

Surge

3.25 pint/acre

1

4%

10%

4%

1%

5

Celsius

4.9 oz./acre

4

24%

39%

53%

31%

0

4

6

9

8

LSD P=.05

16

Bermudagrass injury July 14 1–9 3 DAT

TENNESSEE TURFGRASS February/march 2018 Email TTA at: info@ttaonline.org

prodiamine (Barricade), pendimethalin (Pendulum), and oryzalin (Surflan), do not provide effective control of doveweed.

Also, the postemergence grass herbicides used in ornamentals and in certain turfgrass, such as fluazifop (Fusilade/ Ornamec), sethoxydim (Segment), clethodim Envoy), and fenoxaprop (Acclaim Extra), do not control this weed. So, it is important to tell doveweed from grasses, such as crabgrass.

Doveweed has thin, pointed leaves about 2" to 5" long and about 1/4" to 1/2" wide. Leaves clasp the stem with a sheath. Stems tend to grow close to the ground and root into the soil at the nodes. It has a small purplish-white flower with 3 petals and forms small capsules that contain the seed. Doveweed is strictly a weed of summer, as it does not tolerate cold weather. I cannot grow doveweed in my greenhouse over the winter, since we keep temperatures low to save money on fuel. Doveweed does not like 50°F! So, it germinates later in spring than crabgrass, and it tends to die off sooner in fall. Doveweed seeds lack

Cover St ory Table 2. Postemergence control of doveweed in bermudagrass using a single application in a 2017 trial.

Percent doveweed control July 5

July 13

July 19

July 26

Aug. 4

Aug. 15

Treatment

7 DAT

15 DAT

21 DAT

28 DAT

37 DAT

48 DAT

1

Nontreated

0%

0%

0%

0%

0%

0%

2

Certainty + Capsil

1 oz./a.

0.25 % v/v

1%

5%

8%

9%

4%

1%

3

Certainty + Capsil

1.25 oz./a.

0.25 % v/v

3%

5%

11%

14%

8%

5%

4

Certainty + Manor + Capsil

1 oz./a.

0.5 oz./a.

0.25 % v/v

5%

11%

20%

25%

18%

9%

5

Change Up

2 pt./a.

5%

5%

10%

5%

4%

2%

6

Change Up + Manor

1 pt./a.

0.5 oz./a.

7%

13%

24%

16%

11%

5%

7

Change Up + Manor

2 pt./a.

0.5 oz./a.

11%

19%

34%

44%

36%

24%

8

Manor +Capsil

0.5 oz./a.

0.25 % v/v

5%

16%

25%

31%

23%

15%

9

Celsius +Capsil

3.7 oz./a.

0.25 % v/v

1%

5%

20%

30%

26%

19%

10

Avenue South

4 pt./a.

5%

15%

20%

11%

6%

0%

3

5

4

5

4

2

LSD P=.05

Capsil is a nonionic surfactant.

dormancy when produced, so seeds produced in early summer can germinate, leading to multiple generations per year.

Doveweed control in landscape beds I have found only three preemergence herbicides that control doveweed in ornamentals—metolachlor (Pennant Magnum), dimethenamid (FreeHand, Tower), and flumioxazin (BroadStar, SureGuard). The use of BroadStar, a granular formulation, is primarily effective in established woody landscape trees and shrubs. SureGuard is a sprayable formulation of flumioxazin and must be used as a directed spray around trees and shrubs, since it has significant postemergence activity. In fact, SureGuard will control small doveweed plants.

In a range of bedding plants, groundcovers, and woody plants, FreeHand would be a good option for preemergence control. Early spring applications, though, may dissipate prior to the onset of peak doveweed germination in summer,

18

TENNESSEE TURFGRASS February/march 2018 Email TTA at: info@ttaonline.org

Cover St ory Table 3. Doveweed control in a container trial after one application in a 2017 trial.

Treatment Nontreated Pylex 2 + MSO Tenacity 3 + MSO Atrazine 4 + MSO Revolver 5 + MSO Surge 6 + MSO Image 7 + MSO Dismiss 8 + MSO Tribute 9 Total + MSO Celsius 10 + MSO Basagran 11 + MSO LSD P=.05

Percent doveweed control Aug. 23 Aug. 30 Sept. 6 6 DAT 13 DAT 20 DAT 0 0 0

1

2.8 1 4 1 4 1 0.19 1 2.18 1 70 1 4 1 60.6 1 68 1 4 1

1.5 1 8 1 1 1 17.4 1 4 1 11.4 1 8 1

fl. oz./a. % v/v fl. oz./a. % v/v lb. ai/a % v/v fl. oz./a % v/v pt./a. % v/v oz./a. % v/v fl. oz./a % v/v

3.2 oz./a.

1 % v/v 4.9 1 1 1

oz./a. % v/v qt./a. % v/v

47%

40%

33%

63%

62%

57%

87%

90%

95%

13%

23%

30%

60%

72%

83%

10%

22%

40%

27%

20%

10%

60%

77%

83%

63%

73%

78%

3%

3%

10%

10

7

14

so repeat applications may be needed during the growing season. Alternately, sprayed applications of Pennant Magnum or Tower could be used in a range of nursery plants. But they should be applied as a directed spray.

For postemergence control of doveweed, glufosinate (Finale) provides greater control than glyphosate (Roundup, etc.). SureGuard is an option around trees and shrubs if the doveweed plants are small. Nonselective contact herbicides, such as diquat (Reward), also would be an option for control. I do not know of a postemergence herbicide we could use over the top of ornamentals for controlling emerged doveweed, so directed applications will be needed.

Doveweed control in turfgrass Since doveweed can move into turf areas from infested ornamental beds or be brought in on sod, control measures are needed for cool- and warm-season turf-

MSO = methylated seed oil adjuvant.

Table 4. Doveweed control and shoot fresh weight after two applications in a 2017 trial.

Sept. 14 % 7 DAT2

Sept. 20 % 13 DAT2

Sept. 27 % 20 DAT2

Oct. 4 % 27 DAT2

Doveweed Shoot Fresh Weight Oct. 4 grams 27 DAT2

3%

0%

0%

0%

242.2 g.

12%

60%

62%

57%

21.2 g.

80%

99%

100%

100%

0.0 g.

98%

99%

99%

98%

0.2 g.

33%

47%

28%

20%

37.5 g.

94%

99%

97%

96%

0.7 g.

27%

50%

42%

33%

34.9 g.

17%

0%

0%

0%

151.4 g.

78%

83%

88%

88%

2.3 g.

62%

73%

77%

71%

10.7 g.

10%

0%

0%

0%

205.4 g.

Percent doveweed control

Treatment 1 2 3 4 5 6 7 8 9 10 11

20

Nontreated Pylex MSO Tenacity MSO Atrazine MSO Revolver MSO Surge MSO Image MSO Dismiss MSO Tribute Total MSO Celsius MSO Basagran

1.5 1 8 1 1 1 17.4 1 4 1 11.4 1 8 1

fl. oz./a. % v/v fl. oz./a. % v/v lb. ai/a % v/v fl. oz./a. % v/v pt./a. % v/v oz./a. % v/v fl. oz./a. % v/v

3.2 oz./a.

1 % v/v 4.9 oz./a.

1 % v/v 1 qt./a.

TENNESSEE TURFGRASS February/march 2018 Email TTA at: info@ttaonline.org

grass. We have been evaluating turfgrass herbicides over the last few years for selective control of doveweed.

Some of my colleagues have talked about using the three-way postemergence herbicides that contain 2,4-D, MCPP, dicamba, or related herbicides.

Although we have seen injury to doveweed from these products, single applications have not provided acceptable control. For example, single applications of Triplet, 4-Speed XT, and Surge did not provide acceptable doveweed control in a 2016 trial (Table 1).

The injury to Bermuda grass from 4-Speed XT most likely was due to the triclopyr component. Celsius caused 53% injury to doveweed at 25 days after treatment, but plants outgrew the injury over time. We did not see acceptable control with Change Up applied either alone or in combination with Manor (Table 2). Certainty, Celsius, and Avenue

South also did not provide acceptable control in that trial after one application.

We tried some additional herbicides in a field and a container trial in 2017, in this case making two applications one month apart. Similar results were seen in both the field and container trials, with the container results listed in Tables 3 and 4. Treating doveweed in containers allowed us to easily record shoot weights.

At 20 days after the first application, atrazine, Surge, Tribute Total, and Celsius were providing good control (Table 3).

We used a higher rate of Surge in this trial compared to the 2016 study; this could explain the better results we saw in 2017. Also, we added a methylated seed oil to Surge in 2017, but did not in 2016; so that also could be a reason for the better control in 2017.

After two applications, excellent doveweed control was seen with Tenacity, atrazine, Surge, and Tribute

Total (Table 4). Doveweed shoot fresh weight at 27 days after the second application confirmed our control ratings that were taken visually. Tenacity, atrazine, Surge, and Tribute Total all reduced doveweed shoot fresh weight by 99% to 100%. Pylex and Celsius also significantly reduced doveweed shoot weight, with fewer reductions seen with Revolver and Image.

In cool-season turfgrass, two applications of Tenacity should be an effective treatment for doveweed control. In bermudagrass, Tribute Total applied twice would be a control option. Use of atrazine would probably be limited to St. Augustine. Repeat applications of Surge would be an option in both cooland warm-season turfgrass species.

We plan to continue our work on doveweed to optimize the timing, rate, and surfactant addition needed for optimum doveweed control in turfgrass. T

TENNESSEE TURFGRASS ASSOCIATION • TENNESSEE VALLEY SPORTS TURF MANAGERS ASSOCIATION • Tennessee Golf Course Superintendents Association

21

R ecent E vent

Highlights from TTA’s

52nd Annual Conference & Trade Show

Congratulations to TTA’s 2017 Award Winners!

Environmental Stewardship Indian Hills Golf Course Superintendent: Brad Marcy Murfreesboro, TN

Collegiate Field of the Year Vanderbilt Soccer/ Lacrosse Field Nashville, TN

Public Golf Course of the Year Sweetens Cove Golf Club Superintendent: Brent Roberson South Pittsburg, TN

Private Golf Course of the Year Golf Club of Tennessee Superintendent: Jeff Huber Kingston Springs, TN

Professional Field of the Year Ball Park at Jackson Head Groundskeeper: Eric Taylor Jackson, TN

Dr. Tom Samples Professional of the Year Roger Frazier

High School Field of the Year Harding Academy Baseball Field • Memphis, TN

TENNESSEE TURFGRASS ASSOCIATION • TENNESSEE VALLEY SPORTS TURF MANAGERS ASSOCIATION • Tennessee Golf Course Superintendents Association

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Congratulations to TTA’s scholarship Winners!

Thank You to Our Reception Sponsors AmpAgronomy SodSolutions

Ernest Hardison Memorial Scholarship Winner John Thomas The University of Tennessee

TGCSA Rounds 4 Research Scholarship Winner Dallas Taylor The University of Tennessee

TTA Legacy Scholarship Winner JAckson Beckham The University of Tennessee

TGCSA Rounds 4 Research Scholarship Winner John Thomas The University of Tennessee

Thank You to Our Breakfast & Coffee Break Sponsors Dow AgroSciences Huntsville Tractor Lastec Nufarm Regal Chemical Syngenta

Thank You to Our TTA Annual Meeting & Keynote Speaker Sponsors A&W Southern Sod Farms Buy Sod Crossroads Sod Farm McCurdy Sod Farms Tri-Turf Sod Farms, Inc.

Rounds 4 Research Donation to UT Endowment

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TENNESSEE TURFGRASS February/march 2018 Email TTA at: info@ttaonline.org

REC ENT EVENT

Thank You to Our Tradeshow Exhibitors!

1st Products Inc. Advanced Turf Solutions Aqua Aid BASF Better Billy Bunker, Inc. Brandt Buy Sod BWI Companies Capillary Concrete Champion Turf Farms Crews Service Company CRF TECH Crossroads Sod Farm, LLC Dickens Supply Dow AgroSciences Dry Ject of Tennessee Ewing Irrigation

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FMC Geoponics Corp.

Golf Agronomics Sand Golf Preservations Grassmasters Sod Farm Grassroots, Inc. Greenville Turf and Tractor Gulf Coast Organics HARCO Fittings Harrell’s Helena Chemical Company Howard Fertilizer Humphries Farm Turf Supply Huntsville Tractor & Equipment Jackson Sand Co. Keeling Company Ladd’s Inc.

TENNESSEE TURFGRASS February/march 2018 Email TTA at: info@ttaonline.org

Mid Tenn Turf Modern Turf, Inc PBI Gordon Plant Food Company, Inc. PLAYRITE, LLC ProSolutions, LLC Quality Turf Renovation Redexim Turf Products Regal Chemical S&S Turfcovers SePRO Corporation Sigma Organics SiteOne Smith Turf & Irrigation Southeast Turf Maintenance SOUTHERN AG Southern Athletic Fields

Thank You to Our conference Sponsors Platinum Smith Turf & Irrigation

Gold BASF

Silver Bayer Harrell’s NuFarm Tennessee Chapter GCSAA

Bronze Advanced Turf Solutions Howard Fertilizer & Chemicals Southern Athletic Fields WinField

STEC Equipment Sunbelt Rentals Sur-Line Turf, Inc Syngenta The Andersons The Hogan Company TifTuf TIPCO, Inc. Tri-Turf Sod Farms, Inc Tru-Turf Turfgrass Producers International Warner’s Athletic Construction Winfield Winrock Grass Farm Winstead Turf Farms

Calendar of Events April 10 MAGCSA April Meeting Windyke Country Club Memphis, TN

May 22 ETGCSA May Meeting Tanasi Golf Club Loudon, TN

April 10 ETGCSA April Meeting Three Ridges Golf Course Knoxville, TN

June 18 MAGCSA June Meeting Olive Branch Country Club Olive Branch, MS

April 17 MTGCSA April Meeting Nashville Golf and Athletic Club Nashville, TN

June 19 ETGCSA June Meeting Tri Cities Golf Course Bristol, TN

May 15 MAGCSA May Meeting Chickasaw Country Club Memphis, TN May 21 MTGCSA May Meeting Westhaven Golf Club Franklin, TN

July 16 ETGCSA July Meeting Blackthorn Country Club Jonesboro, TN July 25 TVSTMA Field Day Ridley Sports Complex Columbia, TN August 6 ETGCSA August Meeting Brainerd Golf Course Chattanooga, TN

September 18 MTGCSA September Meeting Soil, Plant and Pest Center Ellington Agricultural Center Nashville, TN September 20 MAGCSA Bushwood Classic Jackson Country Club Jackson, TN October 23 ETGCSA S&R Tournament Council Fire Country Club Chattanooga, TN October 29 MAGCSA Scott McNeer Golf Tournament Spring Creek Ranch Memphis, TN November 6 MTGCSA November Meeting Bluegrass Yacht & Country Club Hendersonville, TN

Digital Marketplace Scan the QR code: Download your favorite QR reader to your phone and scan the code to learn more about these companies.

The Tennessee Turfgrass Association serves its members in the industry through education, promotion and representation. The statements and opinions expressed herein are those of the individual authors and do not necessarily represent the views of the association, its staff, or its board of directors, Tennessee Turfgrass Magazine, or its editors. Likewise, the appearance of advertisers, or Turfgrass Association members, does not constitute an endorsement of the products or services featured in this, past or subsequent issues of this quarterly publication.

Copyright © 2018 by the Tennessee Turfgrass Association. Tennessee Turfgrass is published bi-monthly. Subscriptions are complimentary to members of the Tennessee Turfgrass Association.

Third-class postage is paid at Nashville, TN. Printed in the U.S.A. Reprints and Submissions: Tennessee Turfgrass allows reprinting of material. Permission requests should be directed to the Tennessee Turfgrass Association. We are not responsible for unsolicited freelance manuscripts and photographs. Contact the managing editor for contribution information. Advertising: For display and classified advertising rates and insertions, please contact Leading Edge Communications, LLC, 206 Bridge Street, Franklin, TN 37064, (615) 790-3718, Fax (615) 794-4524.

TENNESSEE TURFGRASS ASSOCIATION • TENNESSEE VALLEY SPORTS TURF MANAGERS ASSOCIATION • Tennessee Golf Course Superintendents Association

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The Turfgrass Team at the University of Tennessee Scott Boyle Communications Coordinator The University of Tennessee 2431 Center Drive 252 Ellington Plant Sci. Bldg.

Knoxville, TN 37996-4561 (865) 974-6730 sboyle1@utk.edu turf.utk.edu Twitter: @Scott_CPO José Javier Vargas Almodóvar Research Associate II Turf & Ornamental Weed Science The University of Tennessee 2431 Joe Johnson Drive 252 Ellington Plant Sci. Bldg.

Knoxville, TN 37996 (865) 974-7379 jvargas@utk.edu tnturfgrassweeds.org Twitter: @UTweedwhisperer Greg Breeden Extension Specialist, The University of Tennessee 2431 Center Drive 252 Ellington Plant Sci. Bldg.

Knoxville, TN 37996-4561 (865) 974-7208 gbreeden@utk.edu tnturfgrassweeds.org Twitter: @gbreeden1 Jim Brosnan, Ph.D. Associate Professor, Turfgrass Weed Science The University of Tennessee 2431 Joe Johnson Drive 252 Ellington Plant Sci. Bldg.

Knoxville, TN 37996-4561 (865) 974-8603 jbrosnan@utk.edu tnturfgrassweeds.org Twitter: @UTturfweeds

Frank Hale, Ph.D. Professor, Entomology and Plant Pathology The University of Tennessee 5201 Marchant Drive Nashville, TN 37211-5201 (615) 832-6802 fahale@utk.edu ag.tennessee.edu/spp Brandon Horvath, Ph.D. Associate Professor, Turfgrass Science The University of Tennessee 252 Ellington Plant Sci. Bldg.

2431 Joe Johnson Drive Knoxville, TN 37996 (865) 974-2975 bhorvath@utk.edu turf.utk.edu Twitter: @UTturfpath Tom Samples, Ph.D. Professor, Turfgrass Extension The University of Tennessee 2431 Joe Johnson Drive 252 Ellington Plant Sci. Bldg.

Knoxville, TN 37996-4561 (865) 974-2595 tsamples@utk.edu turf.utk.edu Twitter: @tnturfman

John Stier, Ph.D. Associate Dean The University of Tennessee 2621 Morgan Circle 126 Morgan Hall Knoxville, TN 37996-4561 (865) 974-7493 jstier1@utk.edu turf.utk.edu Twitter: @Drjohnstier William Dan Strunk, Ph.D. Research Associate I The University of Tennessee 2431 Joe Johnson Drive 363 Ellington Plant Sci. Bldg.

Knoxville, TN 37996-4561 (865) 974-2988 wstrunk@utk.edu turf.utk.edu Twitter: @WDanStrunk Alan Windham, Ph.D. Professor, Entomology and Plant Pathology The University of Tennessee 5201 Marchant Drive Nashville, TN 37211-5201 (615) 832-6802 awindham@utk.edu https://ag.tennessee.edu/spp/ Twitter: @UTPlantDoc

John Sorochan, Ph.D. Professor, Turfgrass Science The University of Tennessee 2431 Joe Johnson Drive 363 Ellington Plant Sci. Bldg.

Knoxville, TN 37996-4561 (865) 974-7324 sorochan@utk.edu turf.utk.edu Twitter: @sorochan

Index of Advertisers A & W Southern Sod Farms................................. 17 www.awssod.com

Barenbrug USA....................................... Back Cover www.barusa.com

Buy Sod........................................ Inside Back Cover www.buysod.com

BWI Companies...................................................... 9 www.bwicompanies.com

Carolina Green Corp.............................................. 29 www.cgcfields.com

Coosa Valley Turf Farms....................................... 25 www.coosavalleyturffarms.com Covermaster, Inc..................................................... 9 www.covermaster.com

Grassmasters Sod Farm.................................... 7, 17 www.grassmastersindiana.com

Greenville Turf & Tractor, Inc............................... 19 www.greenvilleturf.com

McCurdy Sod Farms................................................ 8 www.mccurdysodfarms.com

Mid Tenn Turf, Inc.......................................... 22, 29 www.midtennturf.com

Mid-Atlantic STIHL, Inc......................................... 11 www.stihldealers.com

North Georgia Turf Company, Inc......................... 21 www.ngturf.com

Progressive Turf Equipment, Inc........................... 22 www.progressiveturfequip.com

RD Murphy, LLC.................................................... 30 www.rdmurphy.com

Regal Chemical....................................................... 3 www.regalchem.com

Sigma Organics, Inc.............................................. 10 www.SigmaTurf.com

Smith Seed Services............................................. 22 www.smithseed.com

Southeast Turf Maintenance................................ 27 www.southeastturf.com

Sur-Line Turf, Inc................................................... 27 www.surlineturf.com

The Turfgrass Group............................................... 5 www.theturfgrassgroup.com

Tri-Turf Sod Farms................................................ 18 www.triturfsod.com

Turf Mountain Sod................................................ 25 www.turfmountain.com

Turfgrass of Tennessee.......................................... 7 Winstead Turf Farms...................Inside Front Cover www.winsteadturffarms.com

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TENNESSEE TURFGRASS February/march 2018 Email TTA at: info@ttaonline.org