Mississippi Turfgrass - Fall 2017

Fall 2017

The Mississippi Turfgrass Association Magazine

Come Play on Our Turf: Deep South Turf Expo, November 7–9, 2017 Preemergence Herbicide Use in Warm-Season Sod Production

olE Miss

Rebels Return to Their Roots

fall 2017

Contents • The Mississippi Turfgrass Association Magazine Features

10 Upcoming Event — Come Play on Our Turf: Deep South Turf Expo, November 7–9, 2017

14 Cover Story —

10

Ole Miss Rebels Return to Their Roots

18 Sod Feature —

Preemergence Herbicide Use in Warm-Season Sod Production

24 Recent Event — YardDawg Classic, June 20, 2017

Departments

6 From the MTA President

8 MTA Membership Application

14

25 Mississippi State Turf Team 26 Calendar of Events 26 Index of Advertisers On the front cover: The University of Mississippi’s Vaught Hemmingway Stadium, with the playing field re-covered with natural-grass sod.

Mississippi Turfgrass is the Mississippi Turfgrass Association magazine. Subscriptions are complimentary to MTA members. The statements and opinions expressed herein are those of the individual authors and do not necessarily represent the views of the association, its staff, its board of directors, Mississippi Turfgrass, or its editors.

Likewise, the appearance of advertisers, or their identification as MTA members, does not constitute an endorsement of the products or services featured in any issue of Mississippi Turfgrass. Copyright ©2017 by the Mississippi Turfgrass Association.

Mississippi Turfgrass is published quarterly. Subscriptions are complimentary to members of MTA. Presorted standard postage is paid at Nashville, TN. Printed in the U.S.A. Reprints and Submissions: MTA allows reprinting of material published here.

Permission requests should be directed to MTA. 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.

18

From the mta president Mississippi Turfgrass Association Box 9555 MS State, MS 39762 Office: (662) 325-0517 Fax: (662) 325-2705 www.msturfassociation.org

Erick Coomer

I’m

very proud and honored to have served as president of MTA for the past year. I feel as though we have accomplished a great deal for the organization over the past few years, with board members that take the positions seriously. We are extremely sound financially, and we have begun the process of growing a foundation that will fund scholarships and research. This is something that I will look forward to seeing play out over the next few years. Membership has also grown, and continues to grow. Please continue to tell anyone in our profession that may not already be a member to become one. The benefits are vast.

The Deep South Turf Expo (November 7-9) is one of the last opportunities for networking with peers and education that we will have this year. Make it a point to be there. The extracurricular activities to choose from have grown, and the speaker lineup has been revamped to accommodate a broader audience. It’s an event you won’t regret attending.

On June 15, my wife, my two young daughters and I were in a car wreck driving north through Richland, MS, just south of Jackson. We were headed to visit family in north MS when a car pulled out in front of us. We collided with the vehicle at a speed of 50 mph without touching the brake. As we came to a stop and assessed the damage, my wife and I quickly noticed that we were all OK. My two daughters were extremely frightened, as were we. We found that we only suffered minor injuries. By the grace of God, we were spared from what could’ve been a tragedy.

Since that day, I’ve reevaluated my life. I came to the conclusion that my job, no matter how important and demanding it may be, will never be as important and precious to me as my family. I say this to relay to each of you that we should never lose sight of what is truly important to us. Continue to work hard and diligently daily in your profession. Give it all you got while you’re there, but don’t let the grind blind you from the things that really matter.

Thanks, and see you at DSTE!

Erick Coomer 2017 MTA President

Published by: Leading Edge Communications, LLC 206 Bridge Street Franklin, TN 37064 Office: (615) 790-3718 Fax: (615) 794-4524 info@leadingedgecommunications.com Mississippi Turfgrass Editor James D. McCurdy, Ph.D.

MTA OFFICERS

President Erick Coomer The Bridges Golf Course (228) 860-5292 Vice President David Leon Turf & Aquatic Specialties, LLC (601) 529-2458 Secretary/Treasurer Wayne Philley Mississippi State University (662) 325-2728 Past President Paul Welborn Lawn and Pest Solutions (662) 316-1347 Administrative Secretary Linda Wells Mississippi State University Box 9555 MS State, MS 39762 Office: (662) 325-0517 Cell: (662) 769-7558 lmw218@pss.msstate.edu

Directors

Jay Coalter Castlewoods Country Club (601) 317-1641 Dan Crumpton Oasis Sod Farms (662) 621-2040 Keair Edwards City of Gulfport (228) 861-5641 Al Osteen (601) 214-9907 Jeremy Tate Tate’s Turf LLC (662) 209-0023 Reuben Wedgeworth Agri-AFC Purvis, MS (601) 498-0750

6 • Mississippi Turfgrass • Fall 2017

The Mississippi Turfgrass Association Magazine • 7

Membership Application Mississippi Turfgrass Association • Box 9555 • Mississippi State, MS 39762 • Office: 662-325-0517 • Fax: 662-325-2705 The Mississippi Turfgrass Association is a non-profit organization of individuals interested in promoting and expanding the turf and landscape industry in Mississippi and surrounding states.

MTA’s objectives are to: Promote quality turf and landscape management.

Sponsor needed research, scholarships for deserving students and conferences on timely topics.

Disseminate information and educational material on turf and landscape culture.

Cooperate with other organizations in advancing educational opportunities in turf and landscape management.

Any individual interested in the advancement of turfgrass or landscape management is invited to join the organization. This includes professionals in golf course and grounds maintenance, sod and seed producers, landscape contractors, landscape architects, horticulturists, agronomists, nurserymen, educators, athletic field managers, park managers and representatives of manufacturers, wholesalers and retailers of turf and landscape equipment, chemicals and supplies.

Annual Dues: $75

for individuals and single business representative membership

$100

for businesses requesting two to four individuals receiving the Mississippi Turfgrass magazine (attach names and addresses for additional newsletter mailings, business only)

$15

for students

$___

Donation to the Mississippi Turfgrass Foundation. Help us sustain more than 50 years of turfgrass research!

Membership year runs January 1 through December 31.

Name:___________________________________________________________ Firm or Club Name:__________________________________________________ Street Address:_____________________________________________________ City:_ ________________________________State:_ _____ Zip:______________

Work Association Golf Course Grounds Maintenance

Telephone (Work):_ __________________________________________________

C ity/State Park Maintenance

Telephone (Cell):____________________________________________________

Lawn Care

Email:___________________________________________________________

Sod

P roduct Representative Education Athletic Fields Other

Make check payable to Mississippi Turfgrass Association (MTA) Mail to: MTA, Box 9555, Mississippi State, MS 39762 If you prefer, you may pay by credit card:

Visa

MasterCard

Card #_______________________________________________

American Express Expiration Date:________________________________________

Signature:_ __________________________________________________________________________________________________ 8 • Mississippi Turfgrass • Fall 2017

upcoming event

Come Play on Our Turf: Deep South Turf Expo November 7–9, 2017

By Melanie Bonds, Prologue Association Management

The

Deep South Turf Expo is leveling all playing fields during its third year! The golf, lawn care, sports turf, sod production and landscape education repertoires coming this November are greening up.

A review of the schedule posted below indicates the strength of our program. The core breakouts for the education sessions are being presented by some of the top names in turf in the Southeast, including Drs. Beth Guertal, David Han, Jason Kruse, Scott McElroy, Jay McCurdy, Maria Tomaso-Peterson, Casey Reynolds and Bryan Unruh. The DSTE is excited to add Dr. Eric Reasor to our program in November. Dr. Reasor joined the Mississippi State turfgrass team just this year.

Bruce Williams, CGCS (Turf Republic), and Dr. Shawn Askew (Virginia Tech) will deliver keynote addresses. Williams’ presentation, entitled “Leading Your Way to Success,” is a blueprint for those in the turf industry on how to succeed!

Mr. Williams emphasizes that successful managers must “shift the mindset from managing people to leadership. The key is to focus on leading a team, rather than managing staff.”

His talk discusses effective ways to lead teams and achieve success in your position. Dr. Shawn Askew complements this theme with his presentation on “Thinking Outside the Box — Unusual Approaches to Unique Challenges.”

Plans for the tradeshow are also underway, and registration is now open. Changes in scheduling have been made this year to give our exhibitors “Bang for the Buck!” The Tradeshow opens on Wednesday, November 8, following lunch and the general sessions. Some exciting putting contests are planned, as well as a 36-Hole Challenge, giving visitors an opportunity to win great prizes. Jerry Pate Turf and Irrigation will again host our Opening Reception. Following the reception, you’ll have the opportunity to participate in the silent auction and the business meetings of our hosting associations.

The highly popular golf tournament returns to The Preserve Golf Club in Vancleave, Mississippi, to open the Expo.

Challengers to last year’s winning teams are already pairing up. A special thanks to Stephen Miles, CGCS, and Jeremy Stephens for hosting the tournament again this year. A Skeet and Trap Tournament for our marksmen at Coastal Rifle and Pistol Club in Biloxi will also be held on Tuesday, along with the popular Sports Field Tour with Mr. Keair Edwards that features Gulfport SportsPlex, Goldin Sports Complex and the Biloxi Shuckers Stadium. Congratulations to the Gulfport 10 • Mississippi Turfgrass • Fall 2017

SportsPlex, which recently achieved STMA environmental certification and won STMA’s 2016 National Softball Field of the Year award.

This year, our Softball Tournament and Dinner will be held on Tuesday night. This event was so much fun last year that we are duplicating all the winning components again this year, including the softball tournament sponsored by AQUA-AID and Regal Chemical. Take an opportunity to play on the gorgeous baseball field at Shucker’s Stadium, or watch your colleagues from the stands. A band will also be on hand, as well as outstanding food sponsored by Bayer and Harrell’s.

It’s a perfect way to relax after a full day of opening events and exhibitor move-in.

Be sure to register early and make your hotel reservations at our host hotel, the Beau Rivage, a five-diamond resort overlooking the Mississippi Sound. A link to the hotel’s online reservation service can be found on our website (www.deep southturfexpo.org). Come play on our turf. Be part of this invaluable event exclusively for turfgrass managers across the southeast! v

2017 DSTE Schedule of Events TUESDAY, NOVEMBER 7 8:00 a.m. – 4:00 p.m. Registration Open 8:00 a.m. – 10:00 a.m. Heavy Equipment Move-In 10:00 a.m. – 4:00 p.m. Exhibitor Move-In 9:00 a.m.

Yoga at The Preserve Golf Club

Sponsored by Syngenta.

10:00 a.m. Skeet and Trap Tournament at Costal Rifle and Pistol Club • Sponsored by Dow AgroScience.

11:00 a.m. Golf Tournament at The Preserve Golf Club Sponsored by Ameri-Turf, Aquatrols and Redox.

11:00 a.m.

Sports Field Tour — meet in lobby of Beau Rivage.

6:00 p.m. Past President’s Reception (invitation only at Beau Rivage) Sponsored by Greenville Turf & Tractor and Beard Equipment Co. 7:00 p.m. – 10:00 p.m. Softball Game & Dinner at MGM Park (Home of the Biloxi Shuckers) Dinner Sponsored by Harrells & Bayer.

Game Sponsored by Aqua-Aid & Regal.

Continued

WEDNESDAY, NOVEMBER 8

•

Cover Story

7:00 a.m. – 4:00 p.m. Registration Open 8:00 a.m. – 12:00 p.m. Exhibitor Move-In 8:00 a.m. – 10:00 p.m. Educational Breakout Sessions (see below).

PEST MANAGEMENT SESSION

SOIL & WATER MANAGEMENT

New Herbicide Chemistries Dr. Scott McElroy, Auburn University There are lots of new herbicides on the market. How do the new products compare to the old?

Drought Tolerance of WarmSeason Grasses Tested on the Linear Gradient Irrigation System Dr. J. Bryan Unruh, University of Florida Drought responses of the turfgrasses commonly grown in the Southeast will be discussed.

Turfgrass Breeding at the University of Florida Dr. Kevin Kenworthy, University of Florida Key objectives of the UF Turfgrass Breeding Program will be discussed.

Interpreting Pesticide Labels Dr. Casey Reynolds, Turfgrass Producers International The label is the law. Learn to interpret the label to remain in compliance.

Estimating Turfgrass Water Requirements: Dialing in Your Irrigation Dr. Jason Kruse, University of Florida Not all turfgrasses have the same irrigation requirements. Learn how the common grasses differ.

Turfgrass Breeding at the University of Georgia Dr. Brian Schwartz, University of Georgia Key objectives of the UGA Breeding Program will be discussed.

Proper Personal Protection Equipment Dr. Dave Han, Auburn University Pesticide applicators must be vigilant in protecting their health. Proper PPE selection, use and care will be discussed.

Conducting Irrigation Audits: Essential and Easy to Do Mr. Phil Moon, University of Florida Poor irrigation system design, installation and maintenance lead to non-uniform application.

Learn practical steps on how to conduct an irrigation audit and how to take corrective actions.

Fertilization of Zoysiagrass: How Much is Too Much?

Dr. Beth Guertal, Auburn University Fertility requirements of zoysiagrass are unique and specific. Attendees will gain new insights on proper management.

Pesticide Selection BMPs Dr. J. Bryan Unruh, University of Florida Selecting the best pesticide encompasses more than just efficacy. Other important selection criteria will be discussed.

9:30 a.m. – 10:00 a.m.

Soil Testing and Fertilization: Is the Minimum Sufficient?

Dr. Barry Stewart, Mississippi State University Soil testing and fertilization.

Making sense out of all the numbers.

Shade and Implications for Turfgrass Health Dr. Casey Reynolds, Turfgrass Producers International Shade is one of the key stressors of turf. Learn how turfgrass growth and development are influenced by shade and low light conditions.

10:00 a.m. – 12:00 p.m. GENERAL SESSION

“Leading Your Way to Success,” Mr. Bruce Williams, CGCS, Bruce Williams Golf Consulting “Thinking Outside the Box — Unusual Approaches to Unique Challenges,” Dr. Shawn Askew, Virginia Tech

8:00 a.m. – 8:30 a.m.

8:30 a.m. – 9:00 a.m.

9:00 a.m. – 9:30 a.m.

12:00 p.m.

The Science behind Fungicides: How They Work Dr. Maria Tomaso-Peterson, Mississippi State University A review of fungicide classes, phytomobility, mode of action, and application strategies to ensure optimal fungicide efficacy.

TURFGRASS MANAGEMENT

PESTICIDE TRAINING & REVIEW

Luncheon & Tradeshow Opening • Sponsored by Ladds and Ventrac.

12:00 p.m. – 5:00 p.m. Tradeshow Open • Tradeshow bags sponsored by Sod Solutions.

12:00 p.m. – 4:30 p.m. Silent Auction 1:00 p.m. – 4:30 p.m. Putting Contest • Sponsored by Woerner Farms.

4:00 p.m. – 5:00 p.m. Tradeshow Reception • Sponsored by Jerry Pate Turf & Irrigation.

Attendees turn in scorecards from 36-Hole Challenge sponsors for beverages.

5:00 p.m. – 6:30 p.m. Annual Business Meetings 5:00 p.m.

Alabama Turfgrass Research Foundation & Mississippi Turfgrass Association

5:30 p.m.

Alabama Turfgrass Association & Louisiana-Mississippi Golf Course Superintendents Association

6:00 p.m.

Alabama Golf Course Superintendents Association & Gulf Coast Golf Course Superintendents Association

5:00 p.m. – 12:00 a.m. Exhibitor Break-Down Dinner on your own (open night)

The Mississippi Turfgrass Association Magazine • 11

THURSDAY, NOVEMBER 9 7:00 a.m.

Continental Breakfast (in hallway).

Sponsored by Syngenta

8:00 a.m. – 10:00 p.m. Educational Breakout Sessions (see below).

Golf

Sports Turf

LAwn care

Athletic Field Establishment: How Long Before You Can Play?

Dr. Beth Guertal, Auburn University Demand for new and renovated fields is high. Often, fields aren’t given sufficient time to establish before play begins. Learn what is needed to ensure long-term success.

Trends in Weed Management in Urban Lawns Dr. Jay McCurdy, Mississippi State University For many reasons, weed management in lawns can be particularly challenging.

Learn how to best adjust your programs to fit some of these challenges.

The Use of Colorants in Golf Course Management Dr. Casey Reynolds, Turfgrass Producers International Turf colorants are becoming some of the most widely used products in turf management. Learn the pros and cons of using such tools.

Managing Soil Compaction in Athletic Fields Dr. Jason Kruse, University of Florida Soil compaction limits healthy turf growth and development. Learn important management practices necessary to mitigate soil compaction.

Avoiding Nutrient Pollution: Fertilization Strategies for Damaged Turf Dr. J. Bryan Unruh, University of Florida Fertilizers applied to healthy, dense turf are effectively used by the plant and do not lead to nutrient pollution. However, fertilizer applied to damaged turf can cause environmental problems. Learn management strategies to reduce the impact.

Managing Change Mr. Bruce Williams, CGCS, Bruce Williams Golf Consulting The last several decades have seen a huge amount of change in our industry.

This presentation will help attendees to understand past and future changes, along with developing a plan to manage changes as they come.

Standards for Sports Turf Management and Material Specifications Dr. Barry Stewart, Mississippi State University There are many “Standards” for athletic field management. Some give us guidance in what constitutes a safe playing field, while others specify materials, techniques and how do use them. This talk will give the attendee exposure to standards and specifications used in the construction and maintenance of safe playing fields.

Look-Alike Problems: Diagnosing Problems with Symptoms Similar to Each Other Dr. Dave Han, Auburn University Dead patches. Brown spots. Stripes and patterns. Not all problems are what they appear. Learn how to diagnose turf problems.

11:00 a.m. – 11:30 a.m.

Divot Recovery of Bermudagrass Cultivars Dr. Jason Kruse, University of Florida Recovery of damage from divoting is key to maintaining quality playing surfaces. Research on this subject will be discussed.

Herbicide Programs in Warm in Warm-Season Turfgrass Dr. Shawn Askew, Virginia Tech The warm and humid South provides ample opportunity for weeds to thrive.

Learn important management strategies.

Trends in Disease Management in Lawns Dr. Maria Tomaso-Peterson, Mississippi State University Turf diseases are commonplace in the deep South. Learn the trends that are impacting turf management.

11:30 a.m. – 12:00 p.m.

Advances in Turf Nutrition: Moving Beyond the Norm Dr. J. Bryan Unruh, University of Florida In an era of reduced inputs and sustainability, current nutrition recommendations are changing. Learn about some of these new strategies and how they may work.

8:00 a.m. – 8:30 a.m.

Integrated Off-Type Management in Ultradwarf Bermudagrass Putting Greens Dr. Eric Reasor, Mississippi State University Pure stands of turf on putting greens are increasingly difficult to obtain. Learn practical strategies to mitigate off-type contamination.

8:30 a.m. – 9:00 a.m.

Plant Growth Regulator Management on Putting Greens Mr. Austin Brown and Mr. Jim Harris, Auburn University Plant growth regulator use on putting greens is commonplace. Learn the latest on using these effective tools.

9:00 a.m. – 10:00 a.m.

10:00 a.m. – 11:00 a.m.

12:00 p.m.

Conference Adjournment & CEU sign-ups

12 Mississippi Turfgrass • Fall 2017 •

Sod The Future of Sod Production Dr. Casey Reynolds, Turfgrass Producers International Come hear from TPI’s new executive director about the state of the industry and the visions for the future.

Worker Protection Standards for Ag Workers: Things a Sod Grower Needs to Know Dr. Sonja Thomas, Auburn University Laws are constantly changing. This is especially true of worker protection standards. Learn what lies ahead in 2018 as the new WPS laws go into effect.

Grow-In, Sod Strength and Harvestability Dr. Jay McCurdy, Mississippi State University Managing warm-season turf versus producing warm-season turf are very different. Learn about practices to enhance sod production.

Roundtable Discussion with Growers and Turf Breeders Dr. Kenworthy, University of Florida; Dr. Brian Schwartz, University of Georgia; and Dr. Wayne Philley, Mississippi State University. Moderated by Dr. Eric Reasor, Mississippi State University Warm-season turfgrass breeding is big business in the deep South. Learn from the key researchers about the future of warm-season turf breeding.

The Mississippi Turfgrass Association Magazine • 13

Cover Story

By Megan Roberts, Marketing and Sales, Sports Turf Company, Inc.

THE Ole

Miss

Rebels Return to Their Roots 14 • Mississippi Turfgrass • Fall 2017

C

ertain challenges are inherent in growing natural grass in large stadium environments. Stadiums cast shadows that limit sunlight. The edges of the field are difficult to maintain because of high-volume traffic.

Field maintenance crews must balance providing the right amount of water without flooding portions of the field.

On the other hand, coaches saw a perfect-looking synthetic field as exciting to fans and a great recruiting tool,

Installation of the certified Tifway 419 Bermudagrass in Vaught Hemingway Stadium at the University of Mississippi.

since it always looked ready for game day. So, in 2003, the University of Mississippi installed synthetic turf at Vaught Hemingway Stadium.

A new direction

By 2015, the University of Mississippi’s second synthetic field was nearing the end of its lifespan. Head coach, Hugh Freeze, said during a press conference, “I think here in Mississippi, we ought to be able to play on grass.”

Ross Bjork, athletic director, seconded that opinion, saying, “We think it’s the right thing to do for our program on many, many levels. Natural grass is the preferred playing surface of our players and our coaches. In the SEC West, Arkansas and us are the only two programs that have artificial turf.

The rest have natural grass, so we think it’s the right move.”

The decision was made via unanimous vote to pull up the synthetic

carpet after the 2015 season and replace it with natural grass.

Contractor selection

The University embarked on the process with some big decisions to be made.

While natural grass was the preferred playing surface, the decision was made to install a short-pile synthetic surface in high-traffic areas around the perimeter of the field, creating the ideal balance between synthetic where it was needed The Mississippi Turfgrass Association Magazine • 15

Cover Story • Continued

Overcoming challenges

The Rebels’ renovated field, with a combination of natural grass and synthetic turf.

With a big project come big challenges.

Access to the stadium was limited to a very small entrance, requiring low-body, single-axle dump trucks to import and export all of the material at a painstakingly slow pace.

The schedule did not leave much room for problems encountered or weather delays. If a day was missed, other efficiencies had to be recognized elsewhere in the schedule to make up for it. By July, the field had to be completely reclamated to allow the new sod time to become established before the first game.

The coordination of vertical stadium construction along with field renovation meant working closely with numerous other contractors, and scheduling had to contemplate all activities. Silt washing down onto the field construction site from other contractors onsite further complicated construction activities.

The specs

Brian McNeil, Sports Turf Manager, Ole Miss.

and natural grass where it counts most — where the game is played.

A competitive bid process emphasized qualified sports field contractors with proven experience in projects of the size and scope of Vaught Hemmingway’s stadium. Sports Turf Company, Inc. was found to be qualified, and the project proceeded to the next phase.

Planning

Bob Calta, certified project manager of Sports Turf Company, Inc., recalls, “It took a lot of time and a lot of planning on all ends before renovation and construction could even begin. There were a lot of considerations: disposal of the synthetic turf; deep excavation 16 • Mississippi Turfgrass • Fall 2017

and extraction of fourteen inches of sand, clay, stone and synthetic field drainage components; twenty or more owner-requested change orders with no change in deadline.”

Ed Norton, landscape architect and partner at Holcombe Norton Partners, Inc., was the lead designer and coordinated all parts of the project with the University. He points out the importance of collaboration, which took place during the stadium project, saying, “It couldn’t have worked without it.

Design-review meetings included traffic, electrical, soil and civil engineers, coaches, subcontractors and the communications department. Bringing everyone together ensured that everyone’s needs were met.”

Sports Turf Company installed a complete natural-grass-field underdrain system, including a 10" sand rootzone layer, 4" of gravel and the drainage pipe itself.

The irrigation system for the stadium consists of a new booster pump and Hunter STK-6V’s with eight retractable heads spread around the perimeter of the football field. The sprinklers make maintenance simple while keeping the surface intact, playable and safe. Each head produces 326.8 GPM and distributes water to a range of 165', making 8 of them the max needed to cover the entire football field.

Certified Tifway 419 Bermuda was installed inside Vaught Hemingway Stadium and on practice field number two to form a dense and durable surface. Tifway 419 Bermuda has become the gold standard for athletic fields and is extremely popular in the realm of football fields. Tifway 419 Bermuda’s ability to recover from damage rapidly and its ability to withstand the rough and tumble nature of football make it one of the most durable hybrid Bermudas. It is also drought tolerant and thrives in hot

weather conditions, making it the best choice for the University of Mississippi.

A total of 188,325 sq. ft., or 20 loads, of sod were delivered for the stadium and the natural-grass practice field. After installation, the sod underwent a three-week growing period where it rooted and knitted together.

The success of this stadium can be attributed to the intelligent design and coordination of the many departments of the university. The short-pile, highwear synthetic surface along the perimeter of the field will handle a lot of traffic from boom cameras, football players, referees and personnel. Overall, this combination means the field will improve competition for players competing on a high-performing grass field while the perimeter of the field continues to look great.

Manning Center Practice Football Facility

Manning Center football practice fields were enlarged to add length to a field that had been shortened by the construction of a parking garage. The addition of 40 yards to the west end of the north field will give the practice facility two full fields for practice. Field one of the practice facility is synthetic turf, and field two is a natural field with an underdrain system and has been established with certified Tifway 419 Bermuda grass.

Pros of natural grass

For the University of Mississippi, the conversion back to natural grass was a no-brainer. It was the best decision for their athletes and their program.

Grass provides a much cooler field temperature, often 35 to 40 degrees cooler than synthetic turf. Grass fields are safer, with significantly more force reduction or lower G-max rating than the previous synthetic field for softer landings. The field plays fast and firm, while easily releasing cleats to reduce injuries. By blending both natural grass for the playing surface and synthetic turf for the highest-traffic team areas, Ole Miss has the best of both worlds. v The Mississippi Turfgrass Association Magazine • 17

Sod Feature

Preemergence Herbicide Use in Warm-Season Sod Production

By Erick Begitschke, Graduate Research Assistant, and Jay McCurdy, Assistant Professor, Mississippi State University

18 • Mississippi Turfgrass • Fall 2017

P

roper weed control is critical to producing high-quality sod.

Weeds not only compete with turfgrass for sunlight, nutrients and water during grow-in, but also they reduce aesthetics and sod tensile strength at harvest. Common sodproduction practices promote weed germination by leaving barren soil fallow after harvesting. Therefore, it is critical for sod producers to plan accordingly and develop a weedcontrol plan beforehand.

Historically, sod producers have disproportionately relied on postemergence, rather than preemergence, herbicide applications to control weeds during grow-in. Due to the number of applications required, costs for inputs and lack of safe and effective options, it may be cheaper and more effective to incorporate preemergence applications into sod-production practices. This is especially evident in the battle against troublesome grassy weeds, such as crabgrass, goosegrass, lovegrass and annual bluegrass.

Sod producers have incorporated the use of preemergence herbicides during grow-in and establishment of sod, some with better success than others. The selection and use of preemergence herbicides is complicated in that many, if not all, can affect sod grow-in and harvestability if not applied at the appropriate rates and sod maturity.

Although labeled in sod production, many preemergence herbicides can only be applied once sod has been well established, to avoid having negative effects.

Sod producers must also take into account the spectrum of weeds controlled by each herbicide. For instance, atrazine is a poor choice for preemergence control of crabgrass; but when used appropriately in the fall, it is a viable herbicide for annual bluegrass control.

Research conducted at Mississippi State University seeks to determine the effects of many common preemergence herbicides on hybrid bermudagrass sod production. A 2016 greenhouse experiment evaluated the effects of herbicides on hybrid bermudagrass root growth, while an ongoing field

experiment evaluates how herbicides affect sprig grow-in and sod strength at harvest. Results suggest that while most preemergence herbicides delay grow-in and inhibit root growth initially, reductions in sod tensile strength are insignificant.

Considerations when using preemergence herbicides

• Always read and follow label instructions. Be aware that some herbicides may have restrictions for applications on newly planted sod or when sod can be harvested after an application.

Consult with your state Extension specialist for more information.

•A ll preemergence herbicides inhibit root growth to some degree. While some preemergence herbicides are safer on sod than others, herbicide safety is highly dependent upon application rate, especially on newly planted sod.

• S ome preemergence herbicides also have limited postemergence activity.

However, as with all postemergence herbicides, it is best to apply these herbicides when the weeds are small to achieve the best control.

Preemergence herbicides can also be tank-mixed with common postemergence herbicides to provide better postemergence control of weeds along with providing some residual control throughout the growing season.

• Timing is critical when applying preemergence herbicides. Most preemergence herbicide applications are timed based on crabgrass/goosegrass germination in the spring (~February and March) and annual bluegrass germination in the fall (~September and October). When in doubt, applying herbicides earlier rather than later is recommended.

Multiple applications are sometimes needed within the same growing season to prevent any escapes (example: for goosegrass, 2 spring applications, 8 weeks apart).

• Preemergence herbicides can be applied to centipedegrass and St. Augustinegrass; however, the stoloniferous nature of these grasses causes

them to be more prone to injury than bermudagrass or zoysiagrass. Therefore, preemergence herbicide selection should be based on prior experience and consultation with your Extension specialist. Using lower labeled rates has been effective in centipedegrass and St. Augustinegrass, as they are generally not as weedy as bermudagrass.

• Rotating herbicide modes of action is recommended to avoid herbicide resistance within weed species. This will allow for continued effectiveness of these preemergence herbicides for years to come. If herbicide resistance is suspected, please consult with your local Extension specialist for potential management options.

Some troublesome weeds found on sod farms in the South are crabgrass, goosegrass, annual bluegrass and tufted lovegrass, along with a variety of broadleaf, sedge and rush species. Most preemergence herbicide applications are based on when crabgrass and goosegrass germinate in the spring and when annual bluegrass germinates in the fall.

Germination of these weeds will be dependent on local weather patterns and will vary from year to year.

Tufted lovegrass and other broadleaf weeds, such as palmer amaranth, are generally not a major concern in most turfgrass scenarios due to regular mowing practices. However, these weeds are a concern on some southern sod farms. With proper preemergence herbicide selection and application timing, adequate weed control can be obtained. Understanding weed seed emergence patterns for these somewhat obscure weeds is important for control; however, typical spring preemergence herbicide application timing for crabgrass and goosegrass provides good to excellent control.

Below is a list of potential preemergence herbicides and how they can be used in sod production:

Mitotic Inhibitors (WSSA Group 3) prodiamine (Barricade 4L, Prodiamine 65WG, Resolute) pendimethalin (Pendulum Aqua Cap, Pendulum 3.3EC, Pre-M)

The Mississippi Turfgrass Association Magazine • 19

Table 1. Mode of action and classification of commonly used preemergence herbicides used on warm-season sod farms. Always be sure to read and follow all label instructions presented for each herbicide before application.

WSSA Group

Common Name

Trade Name

Timing

Recommended Comments Application Rate

3

prodiamine

Barricade

Pre

21–48 fl. oz./A

No more than 17 fl. oz./A on newly sprigged bermudagrass.

3

pendimethalin

Pendulum AquaCap

Pre

3.1–4.2 pts./A

Label rates not specified for sod production.

3

dithiopyr

Dimension

Pre/Post

1–2 pts./A

Sod must be established for at least 6 months prior to application.

Do not apply within 3 months of harvest.

3

oryzalin

Surflan

Pre

1.5–2 qts./A

Label rates not specified for sod production.

3

trifluralin

Treflan

Pre

1.5–3 pts./A

Label rates not specified for sod production.

5

atrazine

AAtrex

Pre/Post

1–2 pts./A

Do not apply within 30 days prior to harvest.

5

simazine

Princep

Pre/Post

1–2 qts./A

Do not apply to established beds within 2 days after harvest.

Do not apply to new beds before 7–10 days after planting.

No more than 1 qt./A on newly sprigged turf.

14

14

oxadiazon

flumioxazin

Ronstar

SureGuard

Pre

Pre/Post

100–200 lbs./A (granular application) 4–8 lbs./A (liquid application)

(Liquid) Must be watered in immediately after application to avoid injury to non-dormant turf.

8–12 oz./A

Do not apply within 30 days prior to harvest.

Not labeled for centipedegrass.

Only apply to completely dormant turf.

15

S-metolachlor

Pennant Magnum

Pre

1.3–2.6 pts./A

Do not apply more than 4.2 pts./A per year to the same area used for sod production.

15

dimethenamid-P

Tower

Pre

21–32 fl. oz./A

Delay application for at least 2 months after sprigging.

Delay sprigging after application for at least 2 months.

28

indaziflam

Specticle

Pre

6–10 fl. oz./A

Not labeled for use in centipedegrass, seashore paspalum or St. Augustinegrass sod.

Apply no sooner than 16 months after sprigging.

May be applied up to 4 months prior to harvest.

20 • Mississippi Turfgrass • Fall 2017

Continued

dithiopyr (Dimension 2EW, Dithiopyr 2L, Dithiopyr WSB) oryzalin (Surflan, Oryzalin 4 Pro, etc.) trifluralin (Treflan) Mitotic-inhibiting herbicides specifically inhibit cell division in the roots, causing a signature “stubby” or “bottle-brush” root symptomology. These herbicides have been known to initially injure bermudagrass roots and delay growin of sprigs. However, in many cases, bermudagrass is able to recover from these initial injury symptoms, especially when lower rates are used. It is important to read and follow all label instructions, as some of these herbicides are prohibited from being applied as much as three months before harvest.

Photosystem II (PSII) Inhibitors (WSSA Group 5)

atrazine (AAtrex) simazine (Princep) PSII inhibitors disrupt the flow of light energy within the plant. There are many reported instances of herbicide resistance to these herbicides, particularly in populations of annual bluegrass, which limits their effectiveness on sod farms. However, atrazine and simazine are especially notable for having both pre- and postemergence activity on many winter broadleaf weed species and annual bluegrass. Atrazine is currently labeled for use in centipedegrass and St. Augustinegrass; however, applications of atrazine have been known to initially injure bermudagrass, particularly during the middle of the growing season. These PSII inhibitors are not very effective for prevention and control of crabgrass and goosegrass. However, they may be applied in conjunction with preemergence herbicides, such as mitotic inhibitors, for increased viability.

granular-applied oxadiazon provides good to excellent crabgrass and goosegrass control without injuring the turf.

However, when applied as a liquid to non-dormant turf, oxadiazon can burn the leaf tissue of sod. Sod producers utilizing liquid broadcast applications of oxadiazon or flumioxazin typically apply it to dormant bermudagrass and zoysiagrass during January and February. Both can also be applied on a fertilizer or inert granular carrier, which eliminates the risk of injury to sod.

Oxadiazon may provide good to excellent preemergence control of annual bluegrass, but it lacks the degree of preemergence broadleaf control seen with many other herbicides. For this reason, follow up applications to control broadleaf weeds are almost always warranted.

Flumioxazin is similar to oxadiazon in its preemergence activity on annual bluegrass; however, it lacks the same crabgrass and goosegrass control.

Flumioxazin does have greater postemergence activity on annual bluegrass

•

sod feature

and broadleaves; therefore, it is sometimes used to burn-down existing weeds postemergence while providing some residual activity. When applied as a liquid, flumioxazin will injure green leaf tissue and may initially injure the roots of sod. Flumioxazin is a decent choice to control weeds that are resistant to PSII-inhibiting herbicides due to its postemergence and preemergence activity.

Very Long Chain Fatty Acid (VLCFA) Synthesis Inhibitor (WSSA Group 15)

S-metolachlor (Pennant Magnum) dimethenamid-P (Tower) Similarly to the mitotic-inhibiting herbicides, S-metolachlor and dimethenamid-P have been known to delay grow-in and initially injure bermudagrass roots. However, both are labeled for control of annual grasses and sedges in warm-season turfgrass species. Tank-mixing with either simazine or atrazine is a common

Protoporphyrinogen Oxidase (PROTOX) Inhibitors (WSSA Group 14)

oxadiazon (Ronstar WSP, Ronstar Flo, Ronstar G, Oxadiazon 50 WSB) flumioxazin (Sureguard, Panther) PROTOX-inhibiting herbicides target a crucial step in the chlorophyll biosynthesis pathway. In terms of safety, The Mississippi Turfgrass Association Magazine • 21

practice to enhance S-metolachlor’s preemergence activity on many broadleaf weed species. Due to the success of the chemistry in row-crop agriculture, S-metolachlor use seems relatively higher in sod production than in other facets of the turf industry. However, further research is needed to determine its viability in warm season sod production.

Cellulose Biosynthesis Inhibitor (WSSA Group 28)

Sod strength-testing device to determine sod tensile strength at harvest.

indaziflam (Specticle) Indaziflam is particularly harmful to newly planted sod. However, indaziflam is a viable option in many turf scenarios to control herbicide-resistant weeds.

Its usefulness is somewhat limited in sod production due to the label prohibiting applications of indaziflam to warm-season turf no sooner than 16 months after planting. The label also prohibits applications within 4 months prior to harvest.

Preemergence herbicides are valuable for sod producers to control weeds throughout establishment of sod. However, some of these preemergence herbicides initially injure the sod when applied early in establishment. Recent research suggests that although some of these herbicides delay grow-in and affect root growth, reductions in sod tensile strength at harvest are insignificant. The information presented here provides sod producers with some preemergence herbicide options to implement into their weed control programs.

“Stubby” roots caused by mitotic-inhibiting herbicides.

The information given here is for educational purposes only. References to commercial products, trade names or suppliers are made with the understanding that no endorsement is implied and that no discrimination against other products or suppliers is intended.

References Brosnan JT, Breeden GK, Thoms AW, Sorochan JC (2014), Effects of preemergence herbicides on the establishment rate and tensile strength of hybrid bermudagrass sod. Weed Technol 28: 206-212 v 22 • Mississippi Turfgrass • Fall 2017

recent event

Congratulations to Our Winners!

2017 Yard Dawg Classic June 20, 2017

By Linda Wells, MTA Administrative Secretary

MTA’s

15th Annual Yard Dawg Classic Tournament, held on Tuesday, June 20, was a huge success, with 99 golfers participating! This great event began with a fish fry hosted by Greenville Turf & Tractor and Beard Equipment Company the previous evening. Tuesday was not too hot, play went well, and everyone was happy to come in out of the heat and enjoy a delicious lunch sponsored by Harrell’s and Jerry Pate Turf & Irrigation. Thanks to BWI and Ladd’s for sponsoring water and sodas. A good many MTA members played the Mossy Oak course Monday — we appreciated the course offering that opportunity. Thank you to Rodney Bryant for helping line that up for us.

MTA is fortunate to have such loyal sponsors —there is no way we could provide such an excellent product without their support! A BIG thanks to all our sponsors!

We also want to thank Brad Suggs, Jimmy McPherson and Old Waverly for hosting the Yard Dawg Classic. As always, when we play there, the hospitality and assistance with all our needs are top notch! Thanks, also, to Gregg Flanagan, golf pro at Old Waverly; Gregg was a big help, too. v

First-Place Team

Beard Equipment Company (left to right): Gavin Bauer, Larry Livingston, Ralph Brannin and Brad Rounsaville

Second-Place Team

Koch T & O: Gib Fox, Rodney Guy, Ron Wright and Tim Orton

THANK YOU to Our Sponsors!

AGRI-AFC AQUA•AID Beard Equipment Co. BWI Greenville Turf & Tractor Harrell’s Jerry Pate Turf & Irrigation Koch T & O Ladd’s Syngenta Winfield United Ben Nelson Golf & Utility Vehicles FMC Innovative Turf Products, LLC 24 • Mississippi Turfgrass • Fall 2017

Third-Place Team

Winfield United: Wesley Jumper, Tate Anderson, Cal Hill and David Jumper

Closest to the Pin Sam Agnew

Longest Drive Tom Young

Mississippi State Turf Team

Mississippi State Turf Team Gary Bachman, Ph.D. Associate Extension/ Research Professor Specialty: Ornamental Hort.

Coastal Res. & Ext. Center Phone: (228) 546-1009 gbachman@ext.msstate.edu Clarissa Balbalian, M.S. Diagnostics Lab Manager Specialty: Plant Pathology Phone: (662) 325-2146 cbalbali@ext.msstate.edu Donna Beliech Area Extension Agent IV Rankin Co. Extension Service Phone: (601) 825-1462 donnab@ext.msstate.edu John Byrd, Ph.D. Professor Specialty: Invasive Weed Mgmt.

Phone: (662) 325-4537 jbyrd@pss.msstate.edu

Geoff Denny, Ph.D. Associate Extension Professor Specialty: Commercial Ornamental Horticulture Phone: (662) 325-1682 gcd42@msstate.edu

Wayne Philley, M.S. Senior Research Associate Specialty: Turfgrass Breeding and Evaluation Phone: (662) 325-2728 wphilley@pss.msstate.edu

Jason Ruffin Research Associate Specialty: Turfgrass Mgmt., Turf Research Facility Manager Phone: (662) 325-2640

Alan Henn, Ph.D. Extension Professor Specialty: Ext. Plant Pathologist Phone: (662) 325-4535 ahenn@ext.msstate.edu

Mike Phillips, Ph.D. Department Head and Professor Dept.: Plant and Soil Sciences Phone: (662) 325-2311 jmp657@msstate.edu

Barry Stewart, Ph.D. Associate Professor Specialty: Sports Turf Science Phone: (662) 325-2725 bastewar@pss.msstate.edu

Blake Layton, Jr., Ph.D. Extension Professor Specialty: Ext. Plant Entomologist Phone: (662) 325-2085 blayton@entomology.msstate.edu James McCurdy, Ph.D. Assistant Professor Specialty: Turfgrass Extension Specialist and Weed Scientist Phone: (662) 325-2331 jmccurdy@pss.msstate.edu

Maria Tomaso-Peterson, Ph.D. Associate Professor Specialty: Turfgrass Pathology Phone: (662) 325-2593 mariat@pss.msstate.edu

Eric Reasor, Ph.D. Assistant Professor Specialty: Turf Breeding and Management Phone: (662) 325-8280 eric.reasor@msstate.edu Michael Richard Extension Associate Specialty: Sports Turf Mgmt.

Phone: (662) 325-2311 mpr160@msstate.edu

Jeff Wilson, Ph.D. Regional Extension Specialist Specialty: Ornamentals, Landscape, Turfgrass, Fruits and Vegetables North MS Res. & Ext. Center Phone: (662) 566-8019 jwilson@ext.msstate.edu

The Mississippi Turfgrass Association Magazine • 25

Advertiser Index

Calendar of Events

October 18–20

LANDSCAPES 2017 (Formerly the PLANET Green Industry Conference) Louisville, KY

October 19–20

GIE+EXPO and Hardscape North America Kentucky Expo Center Louisville, KY

October 20–23

ASLA – Annual Meeting & Expo (American Society of Landscape Architects) Los Angeles, CA

JANUARY 16–19, 2018

STMA Conference and Exhibition Fort Worth Convention Center Fort Worth, TX

FEBRUARY 3–8, 2018 Golf Industry Show Henry B. Gonzalez Convention Center San Antonio, TX

FEBRUARY 12–15, 2018 TPI International Eduction Conference & Field Day (Turfgrass Producers Intl.)

Westin LA Paloma Resort Tucson, AZ

November 7–9

Deep South Turf Expo Mississippi Coast Coliseum & Conference Center Biloxi, MS

Digital Marketplace

26 • Mississippi Turfgrass • Fall 2017

Agra Turf, Inc........................................26 www.agrainc.com Agri-AFC,LLC.........................................25 www.agri-afc.com Bayou Bend Turfgrass...........................26 www.bayoubendturf.com Boshancee Nursery, Inc........................21 www.boshanceensy.com Color-Flex Distance Markers................13 www.color-flex.com CoverSports USA.....................................7 www.coversports.com Donkey Forklift...................... Back Cover www.donkeyforklift.com Ewing Irrigation & Landscape Supply........9 www.ewing1.com Harrell’s LLC............................................5 www.harrells.com Humphries Turf Supply..........................20 www.humphriesturf.com Jerry Pate Turf & Irrigation...................23 www.jerrypate.com JNT Turf Solutions LLC...........................13 www.air2g2.com KWMI/K & W Products, Inc......................3 www.kwmiequipment.com O2YS Corporation..................................22 www.o2yscorp.com Progressive Turf Equipment, Inc............7 www.progressiveturfequip.com RD Murphy, LLC.....................................17 www.rdmurphy.com Riebeling Farms, Inc. . .........................13 Southeast Turf Maintenance.................21 www.southeastturf.com Southern Athletic Fields.......................26 www.safdirt.com Sur-Line Turf, Inc..................................17 www.surlineturf.com The Turfgrass Group.......Inside Front Cover www.theturfgrassgroup.com Winstead Turf Farms...... Inside Back Cover www.winsteadturffarms.com