July AugNews

8/14/2019 July AugNews

1/27

Inside:OTF 2003 Confer ence& Show ScheduleSee pages1213

Dr. John Street and?????? blahblahblag

Act ivit y of Dollar SpotSee pages 2023

Gr aduate Student Cor nerSee page 24

Field Day is her e againAugust 13, OTF Tur fgr assResearch Center!

Volume 65 No

July August 20


2/27OTF TurfNews Vol 65 No.4 2003 Page 2

TurfNews distributes useful and timely advice,information and research from Ohios mostknowledgeable experts and professionals toOTF members and those in the turfgrass industry.

Vol. 65 No. 4 2003

TurfNews is produced by the Ohio Turfgrass Foundation,

PO Box 3388, Zanesville, Ohio 437023388,

1888OTF3445 and is available to all members.

www.OhioTurfgrass.org

Inside:Message From The2003 OTF President . . . . . . . . . . . . . 3OTF News. . . . . . . . . . . . . . . . . . . . 45

2003 OTF Golf Outing. . . . . . . . . . . 67OTF & Green Industry News . . . . . . 89OTF 2003 Conference& Show Update. . . . . . . . . . . . . . . . . . 10

Corporate Sponsor. . . . . . . . . . . . . . 11OTF 2003 Conference & ShowProgram Schedule . . . . . . . . . . . . 1213Golf Course Tips

White Grub Control in 2003 . . . . 1415Residental Turf Tips

Grubs are no Match forthe New Nematode Strains . . . . . . . 16SportsTurf Tips

Maximizing Roots & ShootsThis Summer . . . . . . . . . . . . . . 1718Member Spotlight . . . . . . . . . . . . . . . . . . . 19New Growth and Technology

Activity of Dollar Spot onGolf Courses and Lawns. . . . . . . 2023Graduate Student Corner . . . . . . . . 24OTF Guest Column . . . . . . . . . . . . . . . . . . . 25HortShorts . . . . . . . . . . . . . . . . . . . 26Message from the Director of Education . . . . . . 27

OTF Calendarof Events 2003

OTF/OSU Turfgrass Research Field DayAugust 13 , 200 3OTF Research & Education FacilityColumbus, Ohio888-683-3445

For more information or to register for OTF eve

please contact the OTF office at 888-683-3445 visit www.OhioTurfgrass.org.

OTF Annual Golf TournamentOctober 2, 2003Players Club at FoxfireLockbourne, OH888-683-3445

July August 2003

This Issue Sponsor ed By:

For T&O product information or questions,contact your Dow AgroSciences representative:

Tom Linnen 317 -410-6 071 [email protected] Price 937 -642-4356 [email protected]

Related Events:

Ohio Lawn Care AssociationCentral Ohio Diagnostic SeminarAugust 14 , 200 3OTF Research & Education FacilityColumbus, Ohio800-510-5296

2003 OTF Conference & ShowDecember 912, 2003Greater Columbus Convention CenterColumbus, Ohio

888-683-3445


3/27OTF TurfNews Vol 65 No. 4 2003 Page 3

Does the weather amaze youas much as it does me? The

Spring to Summer transition this

year has been quite a story. April

was hot and dry, May was cool

and extremely wet (as usual) and

June has brought a mix bag of

both wet and d ry weather. My

wife thought I had lost it when I

started up our h ome irrigationsystem in late June. Three days

earlier, our backyard was partially

flooded from a weeks worth of rain! As someone once told

me, we cant control it so why complain about it!

As the summer heat hits us, The Ohio State Turfgrass

Science Team is busy preparing for their annual Turfgrass

Field Day that will be held August 13 at the OTF Research

& Education Facility. The OSU Turfgrass Research Field

Day provides an excellent opportunity to learn from many

of the countrys best in turfgrass research and education.

If you have not been able to attend in a few years, come

back and network with your industry peers. You can also

tour the OTF Research & Education Facility. It is something

every OTF member should be proud of since it was made

possible th rough OTF funds.

The Turf Team works extremely hard at studying topics

that directly affect ou r industry.

As an OTF member and a Turfgrass Professional, the

annual Field Day gives you a great chance to view these

research results and apply them in your day-to-day

workplace.

See you August 13th!

John Mowat200 3 President, OTF

Message FromThe President

In MemoriamRoy W. Haney, Jr.Roy W. Haney, Jr., age 83, of Sylvania,passed away Monday, June 23, 2003 inthe Toledo Hospital. Roy was Presidentof OTF in 1965.

He was born on June 22, 1920 in IrontoOH and graduated in 1938 from IrontonH.S. He was a veteran of the Army AirCorp and served in the Pacific Theaterduring WWII.

He began has career at WoodlandCemetery in Ironton taking over asgrounds superintendent. He then servedin similar capacities at Union Cemetery Columbus, White Chapel in Troy, MI,Toledo Memorial Park in Sylvania andfinished his 45-year career at HistoricWoodland Cemetery in Toledo asExecutive Director, retiring in 1985. Hewas a certified Master Gardener and amember of the Ottawa-Jermain ParkBoard of Directors.

He is survived by his wife of 56 years,Ruth Haney; sons Pat and Tim, anddaughters Cindy and Karen.

Roy W. Haney, Jr. will be missed, butfondly remembered by OTF!


4/27

OTF News

OTF TurfNews Vol 65 No. 4 2003 Page 4

OTF News

The 2003 Oh io State Un iversity/ OTF Tur fgrassResearch Field Day will be held Wednesday, August 13

at the OTF Research & Education Facility, The Ohio

State University, Colum bus. Everyone involved in turf-

grass management should attend this valuable annual

event. The Field Day is a great chance to learn about

the tur fgrass research cur rently being conducted at

OSU, to meet with OSU faculty, network with your

industry peers, and visit the tur fgrass research

facilitybuilt and paid for with OTF funds.The annual OTF/ OSU Turfgrass Research Field

Day will follow a similar format as in past years. This is

a great chance to view the results and learn about

ongoing research on active tur fgrass and ornamental

studies conducted by OSU researchers.

The following topics (and more) will be dis-cussed at this years field day:

Fungicide evaluation trialsdollar spot, brownpatch, etc

Dollar spot fungicide resistance in Ohioupdate

Fertility & dollar spot incidence Evaluation of the new rhizomatous tall fescues

PGR programs for creeping bentgrassmanagement

Pre and post emergent weed control studies

Biological control of insects

Sports turf research

Water efficiency/ irrigation study on tur f

Billbug & white grub control studies

Ryegrass on sand-based root zones

The afternoon program will feature twooptional programs:

Top 20 Ornamental Problems Facing the Turf &Landscape Professional. This program will discuss

the d iagnosis of ornamental damage and problem

solving to maintain ornamentals

Navigating OSU websites for Turf Information. Allyour turf information needs may be met by enter-

ing a wide variety of OSU turf and ornamental

websites. Well show you how and where!

The O SU Turfgrass Research Field Day provides

an excellent opportunity to learn from many of the

countrys best in turfgrass research and tour the OTF

Research & Education Facility.

The cost to attend, which includes breakfast and

lunch , is just $25 to pre-register, or $30 on-site ( lunch

is guaranteed only for pre-registrants). Registration

information mailed to all members in early July.Everyone is encouraged to pre-register to save money,

guarantee your lunch, and avoid waiting in line.

For more information, contact the OTF officeat 888-683-3445 or visit the OTF website atwww.OhioTurfgrass.org.

OSU Turfgrass Research Field DayAugust 13


5/27



Next to the OTF conference and show, the Golf

Tourn ament generates the most revenue for OTF.

Lawn care compan ies, sod producers, athletic field

managers, grounds managers and golf course superin-

tendents and their staffs are encouraged to partici-

pate and support OTFs mission of funding turfgrass

research and education.

We urge everyone to register as either an individ-

ual or team, exclaimed OTF Executive Director

Kevin Thompson. It is a great way to build staff loyal-

ty and to reward employees for their hard work

while supporting OTF.

Also contributing to the success of the tournament

are the sponsors. We would be remiss in not men-

tioning the fact that sponsors play a huge role in the

success of the tournament adds Jordan. If you are

interested in sponsorship, please contact OTF offices

or simply fill out a sponsorship form on the tourna-

ment registration form.

Information an d registration mater ials will bemailed in July to all OTF members.

To reserve your spot in th is years tournam ent,

please register early as space is limited to the first

144 golfers. The registration form and gen eral infor-

mation will soon be available on the OTF website at

www.OhioTurfgrass.org. Call 888-683-3445 for

more information.

The Ohio Turfgrass Foundation is holding itsannual Scholarship and Research fundraising scram-

ble Thursday, October 2 at Foxfire Golf Club on th e

Players Club Course.

Foxfire Golf Club is a 36 hole semi-private facility

located 15 miles south of Columbus on State Route

104 and approximately 10 minutes off I-71.

Superintendent and OSU Alumnus Curt Geronplans to have the course in p remier condition for the

event, as he and his staff balance maintaining the aes-

thetic beauty of the cou rse with its challenging layout.

The Players Club at Foxfire has been rated as the most

difficult public course in central Ohio. Designed by

Jack Kidwell and Barry Serafin, The Players Club is

blanketed by bentgrass fairways, and incorporates

large mounds, tree-lined fairways, and th e longest

sand bunker in the Midwest!

At 7100 yards and a slope rating of 132 from the

blue tees, The Players Club provides a challenge for

golfers of all skill levels. This course combines tradi-

tional American golf with British links-style designs for

the ultimate golfing experience.

The 2002 tournament, held at the City of Blue Ash

in Cincinnati generated over $10,000 for the OTF

Scholarship and Research fund.

OTF was very appreciative of the City of Blue Ash

and to the staff for contributing to the success of the

tournament stated comm ittee chair Mark Jordan .

We look forward having our event at a new and excit-

ing venue.

OTF Scholarship and ResearchGolf Scramble October 2


7/27

For Office Use Only: Rcvd Amt$ Ck# Ackd

OTF TurfNews Vol 65 No. 4 2003 Pa

Method of Payment(payment due at time of order):

Company Check Cashiers Check/Money Order

American Express Discover MasterCard VISA

All payments in US funds drawn on a US bank. A $25 fee will be charged for a returned check.

Credit Card Account #

Exp. Date Amt. Charged $

Cardholders Name (print)

Join other turfgrass professionals on Thursday, October 2, The Players

Club at Foxfire, Lockbourne, OH for the Annual OTF Golf Tourn ament.

The tourn amen t is limited to th e first 144 golfers. Reservations will be

processed on a first-come, first-served basis. For your best chance at havingspace confirmed, complete the reservation form, include your

registration fees, and mail or fax them to us today.

Member #

Name

Address

City State Zip

Phone ( )

OTF Member Yes No

I am register ing as a single golfer @ $125.

I am registering more than one golfer @ $12 5 each.

(List names of golfers below.)I am registering as a foursome @$500.

(list organization and names of golfers below.)

Organization

1. Hdcp

2. Hdcp

3. Hdcp

4. Hdcp(combined team handicap must be 40 or more)

Mail or Fax with payment to:OTF Golf Tournament Ohio Turfgrass Foundation

PO Box 338 8

Zanesville, OH 437023388

Phone: (888) 683 -3445 Fax: (740) 452 -2552

Directions will be sent with confirmations.

SponsorshipsPlease check one:

Hole Sponsor$160

Beverage Cart Sponsor$500

Meal Sponsor$500

Highlights of the day include:

18 holes of golf at the beautiful Team Individual and door prize

Players Club at Foxfire Hole-in-one contests

Individual gifts for each golfer Putting con test

Sho tgun scramble beginning at 11:00 a.m. Social time following golf with

Box lunch a buffet dinner and awards

Fantasy Golf presentations

Registration Form

Important New OTF Golf Tournament Policy:

Any team that has won the OTF Annual Golf Tournamentmay only have a maximum of two returning players competeon the same team the following year.

Use this Form to Register forThe Player s Club at Foxfir e on Oct ober 2

Deadline For Reservations: Thursday, September 25, 2003(Reservations will be processed on a first-come, first-served basis.)



This years OTF Show (December 912) is experi-encing brisk exhibit space sales. Already more than

350 booths (10' x 10' spaces) have been reserved by

more than 100 compan ies. Last year, the show boasted

a total of 562 booths. Exhibit space contracts have

been mailed to all past exhibitors, using a priority

point system in which exhibitors earn points based

upon size of booth and number of years exhibited.

A general mailing of the exhibit prospectus was

sent to more than 3000 prospective exhibitors in June.

Exhibit space sales are going very well, but we still

have plenty of great booth space available, informedKevin Thompson, Show Manager. With the layout of

the exhibit hall at the Columbus Convention Center,

there isnt a bad booth in the show.

The Trade Show Development Committee has met

several times this year an d has man y exciting new

plans. The most noticeable change will be the show

hours. The trade show will open Tuesday, December

10, 4:307:30 pm for a Welcome Reception. OTF will

sponsor food, beverages, and entertainment as a way

to say thanks to all our valued exhibitors, members

and attendees.

Attendees will also enjoy complimentary food an d

beverages on the show floor on Wedn esday, for a pre-

auction reception . On Thursday, lunch will be provid-

ed free-of-charge to all attendees. Its real simple, we

want people to stay in the trade show for lunch, rather

than leave the building, informs committee chair

Boyd Montgomery. We owe it to our exhibitors to do

everything we can to encourage people to spend as

much time on the show floor as we can. It also gives

our attendees more value for their registration dollar.

The OTF Motor Speedway is another fun activity

being added this year. Contestants will have the oppor-

tunity to race radio-controlled cars around a banked,

oval track. The race track has been hugely popular atother events, such as the Ohio Parks & Recreation

Show. We think OTF attendees will really have fun

competing against each other. We hope to find spon-

sors to donate prizes, added Montgomery.

Making a return this year will be the Innovation

Station, which offers exhibitors the opportunity to

feature their latest product releases and innovations in

a special designated , high-traffic area. The Innovation

Station gives tur f managers a first look at many of the

newest products in the marketplace.

For more information on exhibiting at theOhio Turfgrass Conference & Show, call OTFat 888-683-3445.

OTF Trade Show Report

OTF & Green Industry News

The OLCA 2003 Diagnostic Seminar is just weeksaway. This years event will be held on Thursday,

August 14 at The Ohio Turfgrass Foundation

Research and Education Facility in Columbus, Ohio.

The hands-on educational program will offer the

following for lawn care maintenance:

Down and Dirty with Subsoils (sub-soils compari-son) Dr. John Street, OSU

What to do about what is Bugging you (Insectback to basics and insecticide recommendations

update) Dr. Dave Shetlar, OSU

Go Figure (the dos and donts of calibration)Dave Woznicki, Lesco, Inc.

Is it Broad...leaf or Chick...weed? (WeedIdentification) Dr. David Gardner, OSU

Grass Establishment and Traffic Tolerance (seedquality, variety establishment) Pamela Sherratt,

OSU

Its Not Brain Surgery (Pest diagnosis and trou-bleshooting) Joseph Rimelspach, O SU

Toys for Big Boys and Girls (Turf EquipmentShowcase)

Registration forms were mailed to all OLCA mem-

bers in July. For more information , visit the OLCA

website at www.OhioLawnCare.org, or call 1-800-510-

5296.

This event is being offered in collaboration with

the OTF Turfgrass Research Field Day on Wednesday,

August 13.

9th Annual OLCA Diagnostic Seminar


9/27

OTF TurfNews Vol 65 No. 4 2003 Page

Early in 2002, Dr. James Beard, internationally known turfgrass sci-entist and 1957 Suma Cum Laude graduate of Ohio State University,

together with his wife Harriet, offered th e Ohio State Un iversity

Tur fgrass Education Program a pledge of $100,000 to establish a

Graduate Fellowship in Tur fgrass Physiology/ Biochem istry. Their

intention was to establish, in perpetuity, a Fellowship Fund whose

interest would pay the stipend and fees for a quality graduate student

to study how turfgrass plants respond to stresses induced by many

environmental factors

The catch was that a total of $400,000 was needed to establish a

named fellowship. The OSU Turf Faculty met and decided th ey, with

the help of the Office of Development in the College of Food,

Agriculture and Environmental Sciences, would take on the challenge

of conducting a campaign to raise the $300,000 in matching funds

needed to establish the Fellowship. The faculty appointed Dr. Harry

D. Niemczyk, Professor Emeritus of Turfgrass Entomology, and Dr. T.

Karl Danneberger, Professor of Turfgrass Science as Co-Chairmen of

their effort.

A Major Fund Raising Committee was formed. Ind ividuals andrepresentatives from many segmen ts of the Turfgrass Industry, famil-

iar with Dr. Breads significant contributions to Turfgrass Science and

their industry, were invited to serve. The final committee consisted

of 25 people from the USA, Canada, Austria, Spain and Japan.

The first contributions were from the OSU Tur f Faculty and Staff

who pledged a total of $10,000 in personal funds to start the cam-

paign. In addition to personal pledges of support, Committee

Members contacted potential donors, conducted writing campaigns,

and urged their respective compan ies or organization to support the

effort.

By December 31, 2002, the campaign had raised more than

$270,000, and by April 7, 2003, their goal of $300,000 in pledges and

cash, was achieved an d exceeded. Its hats off to the OSU Tur fFacultys commitment, to their Committee Members, to the OSU

Development Office, and the donors who hon ored Dr. and Mrs.

Beard by establishing this endowed Fellowship.

Though the pr imary goal has been achieved, additional contribu-

tions to the Beard Fellowship can still be made, and are welcome.

Payment of pledges over time can be arranged. Cash gifts should be

made payable to The Ohio State University Foundation, Beard

Fellowship Account #410936, and sent to: The Ohio State University,

Agricultural Development Office, 152 Howlett Hall, 2001 Fyffe Court,

Columbus, OH 43210. All contr ibutions are tax deductible. Further

information can be obtained by calling Lynda Heyl, OSU Agricultural

Development O ffice (614) 292-0473.

Dr. James BeardDr. Beard is President and Chief Scientist

the International Sports Turf Institute INC.Professor Emeritus of Turfgrass Science a

Texas A&M University, teacher, mentor,research scientist, worldwide consultantand internationally recognized leader in

Turfgrass Science. He is the author of 257scientific papers, 382 popular articles, and

in collaboration with his wife Harriet, hasauthored five books, and a laboratory man

al. His vision and leadership were instru-mental in the formation of the NoerTurfgrass Collection at Michigan State

University, the International TurfgrassResearch Conference, and the US Golf

Association Research Fund. Dr. Beard haspresented numerous invitational papers a

international conferences and symposia,and served as technical advisor to turfgraorganizations in the U.S.A., Argentina,

Canada, England, Europe, Far East, AustraNew Zealand, Japan, Korea, Southeast As

and South Africa. He was President of theCrop Science Society of America, the

International Turfgrass Society, and hasserved on many national committees inclu

ing the Roadside DevelopmentCommittee/National Research Council,

Research Advisory Committee of the O. J.Noer Research Foundation, Musser

International Turfgrass Foundation Board Directors, and Southern Regional Task For

on Plants to Enhance Mans Environment.

Ohio State Turf FacultyCampaign Successful



The OTF Program Development and Trade ShowDevelopment Committees have been hard at work

plann ing this years conferen ce and show. Many

exciting changes and add itions have been planned for

this year, with a few more surprises in the works.

A fantastic educational program has been devel-

oped that should cater to the needs of all tur fgrass

professionals. Highlights of the program include:

Former OSU Football Coach Earle Bruce willspeak before the Welcome Reception on Tuesday

GCSAA Workshop featuring OSUs Ed McCoy Athletic Fields Workshop, Dr. Dave Minner, Iowa

State

Technicians Workshop - a new all-day workshopfor Assistants and Technicians

Mechanics Workshop with Erik Duncanson Sod Producers - a new 1/ 2 day track of education

for sod producers

Leading national speaker Jim Paluch, JP Horizonswill train Top Level Managemen t in the lawn care

industry (sponsored by OLCA) Dave Mellor, Director of Groun ds, Boston Red Sox Dr. Leah Brillman, Seed Research of Oregon, will

give a general session talk

And moreSee pages 12-13 for a list of educational sessions by

day. Complete de tails and registration information will

mail and be available at www.OhioTurfgrass.org in

September.

A Gr eener Futur e

Begins at OTFCash In at the Ohio Tur fgr ass Confer ence & Show

December 9 12, 2003Gr eater Columbus Convention Center Columbus, Ohio

OTF & Green Industry News

2003 Ohio Turfgrass Conference & Show Update

PLEASE MAKE NOTE OF THEFOLLOWING AND PLAN ACCORDINGLY!1.Pre-Conference Workshops will be

Tuesday (not Monday, as in the past)

2.The Trade Show will open Tuesday at4:30 pm for a Welcome Reception (notTuesday morning)

3.The Keynote will be Wednesday morning(not Tuesday)

4. Golf Course and Sports Turf Panels willbe Thursday night (not Tuesday)

5.The Morning with the USGA will be Fridaymorning (not Wednesday)


11/27

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2003 Ohio Turfgrass Conference & Show PreviewFollowing is a brief listing of educational sessions to be offered this year:

Americas PremierTurfgrass EventDecember 912, 2003

20032003

Tuesday, December 9, 2003Assistant/Technicians Workshop9:00 AM10:00 AMSafetyFor Technicians and Assistants

Bob Brockmeyer, American Safety & Health

10:00 AM11:00 AMSeed Labels, Storage, etc.Skip Lynch, Seed Research of Oregon

11:00 AM11:50 AMSoils Boot Camp

Dr. Charles Darrah, CLC LABS

1:00 PM1:50 PMNutrient Sources and Fertilizer Labels

Dr. Charles Mancino

2:00 PM2:50 PMTurfgrass Fertilizer Calculations

Deborah Holdren, The Ohio State University

3:00 PM3:50 PMBasic Irrigation

Joel Braun, Century Equipment

GCSAA Workshop9:00 AM4:00 PMGolf Course Soils Without A Shovel

Dr. Ed McCoy, The Ohio State University/ OARDC

OSU Pesticide Workshop9:00 AM12:00 PMInsecticides & MiticidesModes ofAction & Use Strategies

Dr. David Shetlar, The Ohio State University

10:00 AM11:00 AMHerbicidesModes of Action & Use Strategies

Dr. David Gardner, The Ohio State University

11:00 AM12:00 PMFungicidesModes of Action & Use Strategies

Joe Rimelspach, The Ohio State University

1:00 PM2:00 PMPlant Growth RegulatorsModes ofAction & Use Strategies

Dr. Karl Danneberger, T he Ohio State University

2:00 PM2:50 PMBiocontrolsLatest Developments& Use Strategies


3:00 PM4:00 PMUnderstanding Endophytes andTheir Use in Pest Management

Dr. Parwinder Grewal, The Ohio StateUniversity/ OARDC

Sports Turf Workshop9:00 AM4:00 PMSports Fields: Understanding Wear& Tear and What To Do About It

Dr. Dave Minner, Iowa State University

Opening General Session4:00 PM4:30 PM

Earle Bruce, former OSU Head Football Coach

WEDNESDAY, December 10, 2003General Session8:00 AM8:50 AMNew Developments in Kentucky Bluegrass

& Perennial Ryegrass BreedingDr. Leah Brillman, Seed Research of Oregon

Keynote9:00 AM9:50 AM

Mechanics Workshop10:00 AM1:00 PMMechanics Workshop

Eric Duncanson

Golf1:00 PM1:50 PMBefore You Buy: UnderstandingSoil Microbiology & Turf

Dr. Ron Turco, Purdue University

2:00 PM2:50 PMWater Quality Issues Related to FungicidePerformance on Turf

Dr. Paul Vincelli, The University of Kentucky

3:00 PM3:50 PMNew Technologies and Golf Course Design

Dr. Mike Hurdzan, Hurdzan / Fry Golf Course Design

Lawn & Grounds1:00 PM1:50 PMPesticide Exposure: What Is YourExposure & How to Calculate Risk

Dr. Fred Whitford, Purdue University

2:00 PM2:50 PMImproving the Precision ofPesticide Applications

Dr. George Hamilton, Penn State University

3:00 PM3:50 PMAnswering Your Customers Questions AboutPesticides

Dr. Fred Whitford, Purdue University

Sod Producer1:00 PM1:50 PMStrategies for Extending the Shelf Life of Sod


2:00 PM2:50 PMCompensating Your Employees

Ed Wandtke, Wandtke & Associates

3:00 PM3:50 PMNew Grasses and Future Breeding

Dr. Leah Brillman, Seed Research of Oregon

Sports Turf1:00 PM1:50 PMInfield Management

Doug Gallant, Cincinnati Reds



2:00 PM2:50 PMEight Easy Steps

Jeffrey Fowler, Penn State University

3:00 PM3:50 PMBefore You Buy: UnderstandingSoil Microbiology & Turf

Dr. Ron Turco, Purdue University

Evening Workshop7:00 PM8:50 PMTurf Bugs: Some Suck, Some Dont!


Thursday, December 11, 2003General9:00 AM9:50 AMGrey LeafspotLatest Developmentsand Control Strategies


10:00 AM10:50 AM

Managing Landscapes without PesticidesDr. Parwinder Grewal, The Ohio StateUniversity/ OARDC

11:00 AM12:00 PMDiagnosing the Misapplication of Pesticides


Golf8:00 AM8:50 AMUSGAThe Year in Review

Bob Brame, United States Golf Association

9:00 AM9:50 AMPossible Solutions to Your Labor ProblemsKen Flisek, The Club at Nevillewood

10:00 AM10:50 AMSafety - Business & Management PracticesGary Hanson, American Safety & Health

11:00 AM11:50 AMResistance to Fungicides - Where Are We?


3:00 PM3:50 PMAssessment of Plant Available Nutrients


4:00 PM4:50 PMBasamidNew Chemical Optionfor Green/ Fairway Renovation


5:00 PM7:00 PMGreen Speed & New TechnologyAre We On The Edge

Mr. Bob Brame, United States Golf AssociationDr. George Hamilton, Penn State UniversitySkip Lynch, Seed Research of Oregon

Lawn & Grounds Technical8:00 AM8:50 AMGrub Control in Lawns

Dr. Albrecht Koppenhfer, Rutgers University

9:00 AM9:50 AMPesticides & Human Health

Joanne Kick-Raack, The Ohio State University

10:00 AM12:30 PMTurfgrass & Grassy Weed ID and Contest

Doug Hague, Lawn Classics

Dr. David Gardner, The Ohio State University,

2:00 PM 2:50 PMInsect Biocontrols in Lawns

Dr. Albrecht Koppenhfer, Rutgers University

3:00 PM4:50 PMLandscape Bed Establishment & Maintenance

Joe Boggs, The Ohio State University

Jim Chatfield, T he Ohio State University/ OARDCRandy Zondag, The Ohio State University

Lawn Care Business9:15 AM10:45 AMPeople SolutionsPart One

Jim Paluch, JP Horizons, Inc.

11:00 AM11:50 AMSystems to Drive The Performanceof a Successful Lawn Care BusinessPhil Fogarty, WeedMan

3:00 PM4:30 PMPeople SolutionsPart Two

Jim Paluch, JP Horizons, Inc.

Sports Turf8:30 AM10:00 AMMorning with the NFL/ MLS/ MLB

Darian Daily, Paul Brown StadiumDoug Gallant, Cincinnati Reds

Matt Williams, Crew Soccer StadiumModerator: Boyd Montgomery, Sylvania Recreation

10:00 AM10:50 AMSports Field Maintenance & Drainage Options

Bob Hudzik, Penn State University

11:00 AM11:50 AMNew Developments inTall Fescues and Use Strategies

Dr. Leah Brillman, Seed Research of Oregon

3:00 PM3:50 PMKentucky Bluegrass Characterizationand Blending Strategies

Dr. Leah BrillmanSeed Research of Oregon

4:00 PM4:50 PMPlanning, Protection andPublic Relations for Extra Events

Dave Mellor

Boston Red Sox

5:00 PM7:00 PMTen Most Asked Questions

Bob Hudzik, Penn State UniversityJeff Limburg, Toledo Mud Hens

Dave Mellor, Boston Red SoxBoyd Montgomery, Sylvania RecreationJohn Mott, The Ohio State University

Pamela Sherratt, T he Ohio State UniversityModerator: Jeffrey Fowler, Penn State University

Fr iday, December 12, 2003General Session1:00 PM1:50 PMODA Update & Case Studies

Bob DeVeny, Ohio Department of Agriculture Pesticide

Regulation

Golf7:30 AM10:00 AMMorning with the USGA

Bob Brame, United States Golf Association

9:00 AM12:00 PMRange Maintenance/ Stretching the Budget/ TurfTips/ Changing Workforces

Rick Tyler, Blackhawk Golf Club

10:00 AM12:00 PMRange Maintenance/ Stretching theBudget/ Turf Tips/ Changing Workforces

Bob Brame, United States Golf AssociationKyle Frederick, Rattle Snake Ridge Golf Club

Wes Kitchen, Locust Hills Golf ClubEric Moulin, Four Bridges Country ClubMark Rawlins, Longaberger Golf Club

Randy Shaver, Strategic Golf Alliance, Inc.Rick Tyler, Blackhawk Golf Club

Lawn & Grounds8:00 AM8:50 AMManaging Scale Insects


9:00 AM9:50 AMManaging Borers That AttackOhio Trees & Shrubs

Dr. Dan Herms, The Ohio State University/OARDC

10:00 AM10:50 AM

Control of Chinch Bugs in Home LawnsDr. David Shetlar, The Ohio State University

11:00 AM11:50 AMTips on Mole ControlTom Schmidt, The Moleman

Miscellaneous License Categories8:00 AM8:50 AMAquatic Weed Management

Dr. Bill Lynch, The Ohio State University, School of

Natural Resources

9:00 AM9:50 AMPantry Pests

Ms. Barb Bloetscher, The Ohio State University

Mosquito Management and the West Nile Virus

Robert Restifo, State of OhioBureau of InfectiousDisease Control

11:00 AM11:50 AMIndustrial Vegetation Control

Randy Zondag, The Ohio State University

Sports Turf8:00 AM8:50 AMRenovation & Construction

Jeffrey Fowler, Penn State University

9:00 AM12:00 PMAthletic Field and General Grounds/LawnPresentationAgronomically and AestheticallyEnhancing You & Your Turf

Dave Mellor, Boston Red Sox



White Grub Controlin 2003Dr. David J. Shetlar (the BugDoc)Department of Entomology The Ohio State University

How bad will they be?Of course, the number one question this year is:

How bad will the grubs be this year? Unfortunately,

this simple question rarely has an equally simple

answer! In essence, each course will have varying grub

populations which are largely dependent on last years

grub populations. If you had few grub hot spots last

year, then your course is likely at low risk this year. If

you had major p roblems with gru bs last year, expect

them again! Other than that generalization, we can

state that white grub populations are largely driven byweather con ditions at two critical periodswhen they

pupate in late May into June and when the eggs are

deposited into the soil.

Over the last decade, I have seen significant reduc-

tions in grub populations because of heavy rains in May

and early June. At this time, the pupae have been

formed and these helpless forms are at the mercy of

surrounding conditions. When soils become saturated,

oxygen in the pupal chambers is lost and the pupae

can literally drown. This can occur if the pupae are

immersed in completely saturated soils for 48 to 72

hours. Much of southern Ohio experienced these con-

ditions this year in June . Black tur fgrass ataenius grubs(an early predictor of what is going on in our turf) have

been very scarce this summer, most likely to saturated

soils.

Golf CourseTips

rate ave%control (#tests)Insecticide lb.ai./a. May June July to Aug 16 to Sept 10

Halofenozide 1.5 88.4 (7) 94.4 (23) 88.3 (20) 89.6 (19) 77.7 (27)(=MACH2) 2.0 ? ? ? ? ?

Imidacloprid 0.3 69.8 (12) 90.6 (18) 94.5 (23) 94.5 (27) 94.2 (34)(=Merit) 0.4 62.0 (1) 88.0 (1) 89.0 (1) 82.0 (1)

Table 1. Compar ison of Gr ub Insect icide Eff icacy by Time of Applicat ion(using Japanese Beetle & Masked Chafer Data)

From studies published in Arthropod Managment Tests (1976-2002), using Japanese beetle and masked chafer efficacy

data where checks had 4+ grubs per square foot and significant results. (Six studies from Shetlar (1999-2001) were used

that were not published in AMT.)

May = May 1 to May 31), June = June 1 to June 30, July = July 1 to July 31, to Aug 16 (= Aug 1 to Aug 16), to Sept 10

(=Aug 17 to Sept 10).



What Should I Use t o Contr ol Gr ubs?The second most common question is: What

should I use to control grubs? And, a common

corollary to this question is: Should I rotate insecti-cides since Ive been using the same product for the

last four or five years?

The answers to these questions havent changed.

Both imidacloprid (=Merit) and halofenozide

(MACH2) are the top performing, registered, grub

control products. Both work best when applied as

preventive applications from mid-May to grub egg

hatch (late July), an d both work p retty well as cura-

tive applications (after mid-August into early

September). I have listed these two products by

time of app lication in Table 1. NOTE! Most of the

published information on MACH2 per formance

was at the old rate of 1.5 lb.ai./ acre and th e newlabel rate is at 2.0 lb. This higher rate has increased

the performance of MACH2 as an earlier preventive

treatment and it has made it an equal competitor

with Merit in curative applications.

Concerning rotation of products, this is never a

bad idea, but there are still no data to support th at

rotation is necessary. We have no field evidence of

accelerated microbial degradation ( the major prob-

lem that occurred with O ftanol) n or developmen t

of resistance where Merit or MACH2 h ave been

used repeatedly.

On the oth er hand, white grub eggs need moist soil

for their development. Remember that virtually all

white grub females lay a dehydrated egg. These eggsmust absorb moisture, commonly doubling their size

within 48 hours, in order to complete developmen t.

How dry does it have to be before grub eggs cant devel-

op? Wilting point of the turf! This actually happened

over much of Ohio last year, but at the time of the writ-

ing of th is article, it appears that July 2003 may be a nor-

mal or slightly wetter than normal period. This can

allow for an increase in white grub populations, but I

have found that it often takes two to three seasons for

white grub populations to build up to excessive levels.



Residential TurfTips

How effective are new nematode strains forgrub control? Newly discovered strains of ento-mopathogenic nematodes are proving to be h ighly

effective for the control of white grubs. In our recent

laboratory and tur fgrass trials, two nematod e species

Heterorhabditis zealandicaX1 strain and Heterorhabditis bac-

teriophora GPS11 strain have shown exceptional poten-

tial for control of the Japanese beetle and Northern

masked chafer grubs. In all the tests conducted during

19992001, the nematodes were applied in September

at 2.5 x 109 infective juveniles/ ha in water using a sprin-

kling can and the treated turf was irrigated with 2.512

mm of water immediately after nematode application.

H. zealandica X1 strain provided 7398% control of themature Japanese beetle grubs and 5492% control of

the mature Northern masked chafer grubs.H. bacterio-

phora GPS11 strain resulted in 3497% control of the

Japanese beetle and 3583% control of the Northern

masked chafer. Except for one occasion, grub control

provided by the X1 strain was always equal to or better

than trichlorfon (Dylox 6.2G) and that by the GPS11

strain was always equal to trichlorfon. Th e old strain of

H. bacteriophora (HP88 strain) provided only 52 and

36% control of Japanese beetle and masked chafer,

respectively. Halofenozide ( Mach 2 2SC) and imidaclo-

prid (Merit 75 WP) applied as preventative treatments

in July provided 9798% con trol ofP. japonica.

Imidacloprid applied as a curative treatment in

September provided only 47% control of masked

chafer but 0% control of Japanese beetle. Trichlorfon

applied as a curative treatment in September provided

2992% control of Japanese beetle, 49% control of

masked chafer an d 077% control of mixed pop ula-

tions of the two grub species. Diazinon provided 76%

control of masked chafer when applied in May against

the overwintered population. A combined analysis of

the results from all 9 trials containing 49 treatments

indicates that the predictability in the control of

Japanese beetle and masked chafer by the new X1 strainofH. zealandica and the GPS11 strain ofH. bacteriophora

applied at 2.5 x 109 infective juveniles/ ha is equal to or

better than the curative application of chemical insecti-

cides, diazinon and trichlorfon.

What is the best time to apply nematodes forgrub control? Turfgrass trials conducted in 2001 and2002 comparing the susceptibility of the Japanese beetle

grub instars toH. bacteriophora, GPS11 strain indicate

that the best time to apply nematodes is August. The

2001 field test resulted in being 75%, 53% and 33%

control of the first, second, and third instars at 69, 28

and 9 DAT ( days after treatm ent), respectively. The 14DAT data in 2002 showed control of the first, second,

and third instar to be 55%, 53%, and 0%, respectively.

The 2002 final field data collected in October indicated

97%, 88% and 0% control of first, second, and third

instars at 66, 43 and 14 DAT, respectively. Data on mor-

tality of different instar grubs exposed in the laboratory

to d ifferent concentrations of nematodes confirmed that

the younger grub instars were more susceptible to the

nematodes than th e mature grubs. These results indi-

cate that n ematode applications targeted against the

first and second instars are more effective than those

against third instars. Also soil temperature in September

and October rapidly decline, often reaching below 15Cby the beginn ing of October, when the grubs are in the

third stage. Therefore, nematode app lications made in

August and early September will provide more pre-

dictable control than those made in O ctober, due to the

more approp riate temperature for nem atode activity.

Early nematode applications may also provide an oppor-

tunity for nematodes to recycle and cause secondary

infections, resulting in even higher grub control.

Want to learn more about nematodes?Check the web site at www.oardc.ohio-state.edu/nematodes

Grubs are no Match forthe New Nematode StrainsDr. Parwinder Grewal and Kevin PowerDepartment of Entomology The Ohio State University, OARDC, Wooster



Sports TurfTipsMaximizing Roots &Shoots This SummerPamela J. Sherratt, Dr. John R. Street and Dr. Karl DannebergThe Ohio State University Department of Horticulture & Crop Science

With fall athletic sports just around the corner,the aim is to have 100% cover of desirable grass with

a deep, h ealthy root system. This will provide th e

maximum playing surface stability or traction.

Surface traction, measured by, and sometimes

referred to as shear strength between the athlete

and the playing surface enables the player to make

movements without incur ring injury. If the traction

is too low, falling and slipping will occur. If too high,

there is a danger of the players feet jarring or lock-

ing to the surface and causing injury. Accordingly,

traction is an important consideration for athletesafety and performance.

There is a positive correlation between traction

and level of grass cover, a relationship noted by

many studies. This means that the surface traction

increases as the amount of grass cover increases.

Conversely, once grass cover is lost, the traction lev-

els are significantly reduced. This is particularly evi-

dent on sand-based fields, where surface stability is

lost once grass cover is reduced to less than 15%.

Loss of grass cover is influenced by the amoun t of

play the field gets, but is more rapid on poorly

drained soils. On a well-grassed sand rootzone ,

research has also shown that plant roots increase thetraction/ shear strength by a factor of two to three

times. Tur fgrass root growth is governed to a large

extent by soil temperatures. High soil temperatures

play an especially sinister role because the symptoms

are not easily detected visually. The optimum soil

temperatures for cool season turfgrass root growth is

50 to 65F (10 to 18C). As temperatures increase,

root growth slows and begins to decline. Once soil

temperatures are greater than 75F (24C), root loss

exceeds 50 percent.

Cool Season Grass Dormancy The bluegrasses (Poasp.), ryegrasses (Lolium sp.), and fescues (Festuca sp.) all per-

form best under cooler temperatures (60 to 75F). When

temperatures begin to rise above 80F, and soil moisture

becomes limited, cool season turfgrasses respond by going

into dormancy. In general, these grasses can be expected

to survive in a dormant condition for up to 4 to 6 weeks

with limited damage if summer temperatures are at or

below normal. If daytime temperatures are high (mid-80s

or greater) consistently through the stress period, the grass

plants may begin to show injury after 3-4 weeks.

Moisture Stress The interaction between h igh tempera-ture and moisture can be demonstrated through the use of

a hypoth etical scenario. For example, a Kentucky bluegrass

athletic turf in the northern United States has active shoot

and root growth during middle to late spring because both

air and soil temperatures fall within the optimum range. As

summer approaches and temperatures exceed the opti-

mum, shoot and stem growth slows. From a management

perspective, reduced shoot and stem growth decreases the

wear tolerance and recuperative ability of the turf.

Concurren tly, as soil temperatures increase root growth

slows, and begins to die as temperatures rise above 75F.

Thus, we have moved from a tu rf that has a relatively deeproot system during spring, to a shallow root system in th e

summer, due in a large part to temperature.

Now, as the p lant begins to cool itself during high

afternoon temperatures, transpiration rates increase.

Subsequently, more water is needed from the rootzone.

Given soil temperatures are high, a shallow root system

does not provide enough moisture to the plant to meet its

dem ands on hot sunny low humidity day. Thus, stomates

close to conserve moisture causing a rise in plant tempera-

ture. If the lack of moisture continues, wilting will occur.



Conversely, if the field is highly compacted due to

soil texture and structure turfgrass decline can occur

because too much water is present. On compacted soils,

root systems are restricted compared to non-compacted

soils. As soil temperatures increase, we observe a greater

reduction in the root system. If the compacted soil

becomes water logged during high soil temperatures,significant root loss occurs (within hours). Contributing

to this rapid root loss is the lack of oxygen in the root-

zone. Oxygen is needed for active water uptake by roots.

Thus, we have a situation where plenty of water is pre-

sent in the rootzone (albeit a shallow root system) but

the plant cannot take it up. The end result is plant wilt.

This wilting is sometimes referred to as wet wilt.

Management Strategies High temperature-moisture stress on an athletic field can be minimized

through fundamentally good management practices:

Alleviate compacted soils. Frequent coring in spring,before the summer stress time, will enhance rootgrowth and oxygen exchange. An extensive root

system provides the potential for greater transpira-

tion power.

Proper turfgrass selection. If supplemental irrigationis not possible, choose a turf that is well adapted to

minimal maintenance. For example, tall fescue has

excellent heat and drought tolerance compared to

other cool season turfgrasses.

Monitor soil temperatures. As the soil temperatureincreases to 75F use

this as a key to the

beginn ing of tur fgrassstress and adjust man-

agement practices

accordingly. For exam-

ple, stressful practices

like scarifying and aera-

tion should be restrict-

ed (Figure 1).

Raise mowing heights.

Taller grass will have

deeper, more exten-

sive root systems than

short cut grass, which will help grass plants with-stand summer stresses. Higher cut grass will also

provide more shading of the soil, thereby keeping

soil temperatures cooler and reducing evaporation

of soil moisture. Higher cut grass will also have more

leaf area available for photosynth esis. The cardinal

rule of mowing is not to remove more than one

than 1/ 3 of the leaf tissue with any one cutting.

Never mow grass that is under stress or witling as

this will result in direct physical injury to the tissue.

Nitrogen fertilization should be maintained at low

to moderate levels to reduce stress from over stimula-

tion of growth. Nitrogen fertilizer should be applied

lightly in the spring and summer and more heavily in

the fall on cool-season grasses. Heavy spring fertiliza-

tion prom otes more top growth, reduced root growth,

and a more lush/ succulent plant growth, resulting in

a reduced ability to withstand summer stress. Highnitrogen fertilization in the summer poses a physiolog-

ical stress on the grass due to a depletion of carbohy-

drate/ food levels. Research from Michigan State indi-

cates that surface shear

strength is increased

significantly by the low

rate/ frequent applica-

tions, compared to

high rate/ infrequent

applications. Today,

the summer fertiliza-

tion recommendation

is to use a nitrogen fer-tilizer that contains an

N:K ratio of 3:2 to 1:1,

with the n itrogen com-

ponent low-moderate

in the summer, and at

least 50% slow-release.

Water th e turf correctly, or allow it to go dormant.Correct irrigation is applied deeply and infrequently

(app roximately 1" of water/ week in the summer) , and

when the plant shows signs of moisture stress.

Irrigation is designed to replace water lost due to

evapotranspiration (ET) and this occurs most readily

in the summer (i.e. 0.1-0.3" per day). To ensure thatthe water does not run off, especially on finer textured

or compacted soils, app ly irrigation in cycles (e.g.

three ten-minute cycles, compared to one thirty-

minute cycle).

Do not irrigate at night, especially at dusk (figure 2).If leaf tissue remains wet for prolonged periods of

time, the turf is considerably more prone to disease

attack, such as brown patch and pythium. This is espe-

cially important in July & August, when nighttime

temperatures can be above 70F. Irrigate as early in

the morning if possible. This will offer best use of the

water because much of the irrigation water will be lost

to evaporation if applied mid-day.

We hope that you have found STT informative. Our

aim is to provide you with articles on athletic field related

subjects. If you have any questions, or would like to sug-

gest subject matter for future tips, please contact us:

Dr. John R [email protected] [email protected]. Karl [email protected]

Figure 2: A rain train on a high schoolsoccer field. watering during the day maybe difficult if games are scheduled, butwatering at night will promote diseaseattack, especially in July & August.

Figure 1: Deep tine aerator. Once soiltemperature s hit 75 F, stressful practice ssuch as aeration, scarifying, & verti-cut-ting etc. should be restricted. spring isthe best time for these practices.



OTF member Jean Esposito is a second-genera-tion green professional. Her father and m other start-ed Hinckley Hills Golf Course in 1962, and the club

has been family owned and operated since that time.

Esposito is currently the golf course superintendent,

and h er husband is assistant superintendent and head

mechanic.

Aim for a good education

Esposito credits her parents with her involvement

in the green industry and her strong belief in the

value of classroom and field education. They involved

her in the green industry at an early age. My father

used to take me along to courses The Scotts Company

used to conduct for customers. I did not always under-stand what the course leader was talking about, but at

some point during the course, I would hear a term I

recognized from hearing my parents talk, and the

course con tent would start to come together, says

Esposito. I attended Bluffton College and majored in

education. Then I returned to the green industry, she

says.

Join a professional association

Professional associations, such as Ohio Turfgrass

Foundation and Golf Course Super intenden ts

Association of America, offer the educationalresources and the practical, in-depth information

needed for various specialty areas, says Esposito.

They offer an all-important connection to other

younger and older green professionals.

Esposito was the president of the Nor thern Oh io

Chapter of GCSAA in 1987 and again in 1995 and

1996.

MemberSpotlight

Advice From A Pro

Jean ExpositoGolf Course Superintendent

Hinckley Hills Golf Club

Stay in touch with other professionals

We are lucky to be in a profession where people shareinformation, solutions and innovations, says Esposito. We

talk about our good an d the bad experiences because we

know that value is to be found in the experience each p ro-

vides. And if you visit other facilities, you can see the good

and bad in play and discuss solutions.

Hinckley Hills Golf Course is one of five golf courses in

only 27 square miles, says Esposito. Every golf course

super intenden t has to deal with nature and the weather to

meet the expectations of golfers who see the worlds pre-

miere courses as the norm. It helps to have other superin-

tendents to talk with.

For example, Esposito recalls how David Webner,

Superintendent, Westwood Country Club shared the value

of using a fiberglass whipp ing pole to h elp with spring

cleanup. This was a beneficial process we now employ

because David, a colleague, was generous enough to share

it, says Esposito.

Listen to your vendors

Welcome your sales represen tatives, says Esposito;

Most have the latest product information and are willing

to share it. When asked if product representatives are a

bit b iased, Esposito says a few may be, but most will let you

know if a product is not the best solution. Many also offer

excellent quick courses in products and practices.Vendors have learn ed that if they put sales before cus-

tomer need, it will come back to haunt them, she says.

Many product manufacturers are putting a good num ber

of representatives in the field who have been in the sector.

So, communications with manufacturers has improved

greatly. They are better able to help you arrive at the best

practice or product for your situation.

Hinckley Hills Golf Course is located at 300 State Road

in H inckley, Oh io.



EpidemiologyIs the study of diseaseinitiation, development, and spread.

There are many aspects that are unknown or not

fully und erstood.

Survives un favorable cond itions (overwinters) asdormant mycelium in thatch, excessive thatch

significantly enhances the severity of dollar spot

problems.

Pathogen growth initiation starts when tempera-ture reaches 60F in the turf microenvironmen t

(in the turf canopy).

Maximum fungal growth occurs at 70to 80F inthe turf microenvironment.

Temperature range for fungal growth is 5986F;there are biotypes in southern USA that tolerate

and grow well at higher temperatures.

Long periods of wet foliage from; dew, fog, highhumidity, overcast skies, light rain, guttation fluid,

irrigation, etc. provide ideal conditions for

pathogen growth.

The fungus can produce a material during activegrowth that is toxic to bentgrass roots; this may be

associated with the slow recovery of damaged spots.

Night atmospheric humidity of 85% or higher (heavydew formation) is ideal.

Dissemination is by movement of infected plant partsand the mycelium.

Slow growing turf; due to limited soil moisture, lowfertility levels, poor soil conditions, etc. is more

severely damaged and the damage persists.

Soil pH and phosphorous levels are reported to havelimited influence on disease severity.

Turf susceptibility, can occur on all cool seasongrasses, however bentgrasses and some cultivars of

Kentucky bluegrass are often most severely damaged.

Fungicide resistance is an increasing concern. OSU isstudying how wide spread this problem is and ways to

determine if resistance has occurred by developing a

laboratory test to h elp tur f managers plan the m ost

effective fungicide strategy.

A Review and Update on Resear ch

and the Activity of Dollar Spot onGolf Cour ses and Law ns in Ohio

New Growth and Technology

J.W. Rimelspach and Dr. M.J. BoehmDepartment of Plant Pathology

The Ohio State University

A Review and Update on Resear ch

and the Activity of Dollar Spot onGolf Cour ses and Law ns in Ohio

Dollar spot (Scler otinia homoeocar pa) is consider ed the number one tur f disease in Ohior equir ing mor e fungicide applications to manage than any other tur f disease. In r ecent year s many

have been increasingly challenged to manage the disease. The following information is to assist in theunderstanding and management of this disease. Topics included are; an overview of epidemiology, recent

w eather patt er ns and impact on disease sever ity, fungicide label update,and OSU dollar spot fungic ide evaluat ion data.



2001 Avg. Temp. 2001 Avg. Temp. 2002 Avg. Temp. Normal Avg. TempApril 1-30 51.7 (+ 0.6) 56.5 (+ 5.4) 54.5 ( + 3.4 ) 51.1

May 1-31 65.7 (+ 4.3) 63.3 (+ 1.9) 59.0 ( - 2.4 ) 61.4

June 1-30 71.1 (+ 1.3) 70.9 (+ 0.5) 73.9 ( + 3.5 ) 70.4

July 1-31 72.4 (- 1.8) 74.0 (- 0.2) 78.3 ( + 4.1 ) 74.2

Aug 1-31 71.5 (- 1.1) 75.2 (+ 2.4) 76.1 ( + 3.5 ) 72.6

Sept. 1-30 64.5 (- 1.6) 64.1 (- 2.2) 70.5 ( + 4.4 ) 66.1

Weather Condit ionsDollar spot severi-ty can be greatly influence by yearly weatherpatterns.

As outlined in the previous information on epi-

demiology, environmen tal conditions / weather, plays

a major role in th e growth and development of the

pathogen. The activity of most turfgrass diseases is

determined by the environm ental factors of tempera-

ture and moisture. The following weather data Table 1

contains the average temperature by month and notes

the departure ( +/ -) from the normal monthly temper-

ature. Precipitation data is not included since it was

extremely variable across the state. In th e 2000 seasonthere were many golf course superintendents that

found management of dollar spot to be extremely dif-

ficult. A major reason for th is was the long per iod of

time that weather conditions were almost ideal for the

growth of the pathogen Sclerotinia homoeocarpa.

The spring was warmer than normal which accellerat-

ed the growth and developmen t of the pathogen. So

disease onset was early and more aggressive than in

most years. Then the summer that followed had cool-

er then normal temperatures, which again was nearly

ideal for the pathogen to grow. The high disease activ-

ity in the spring, through the summer, and into the

fall made 2000 one of the most ideal for continous dis-ease activity. The contrasting situation was the summer

of 2002. Spring was warmer than normal or about nor-

mal and dollar spot started, but the summer was much

warmer then normal and the disease activity dropped

off sharply and did not reoccur until well into the fall.

Much of the state last summer was quite dr y which fur-

ther reduced dollar spot growth and development,

making disease pressure low and easier to manage. In

2001 there was a mixture of high and low tempera-

tures and the activity of the disease was variable.

Fungicide Label Change Sw eeping

changes in chlor othalonil labels.Recently chlorothalonil has gone through theR.E.D. (Re-registration Eligibility Document) process.

EPA uses this process to review from time to time

whether a pesticide should be allowed to retain its reg-

istration. This is a comprehensive review and may

require extensive additional tests and data.

After this review, the following label changes were

made to ALL chlorothalonil products and apply to all

manufactures. The limits to maximum use per acre

per year is an accumulation of all chlorothalonil prod-

ucts. All applications of chlorothalonil need to be

added together regardless of the manufacturer to cal-

culate the amou nt applied to an area. If there are anyquestions read and follow the label on the product.

Old product can be use in accordance with the label

on the package.

Table 1. Weather DataThe Ohio State Univer si ty /OSU Tur fgr ass Resear ch Center Columbus, Ohio



chlorothalonil label changes and restrict ions:Seasonal max:

73 lbs active ingredient / A/ season on greens(89 lb Daconil Ultrex)

52lbs active ingredient / A/ season on tees(63 lb Daconil Ultrex)

26 lbs active ingred ient / A/ season on fairways(32 lb Daconil Ultrex)

Maximum individual rate:

A limite of one single application at a rate greater

than 7.3 lbs active ingredient / A / season isallowed for fairways, sod frams, commercial lawns,

parks, athletic fields and recreation al lawns. (8.8

lbs Daconil Ultrex/ A )

A limit of two applications at a rate greater th an11.3 lbs active ingred ient / A / season is allowed

for golf course greens and tees. (14 lbs Daconil

Ultrex/ A )

Minimum spray interval:

7 days (14 days at the 14 lb/ A rate)

Site restrictions: Can NOT be used on residential lawns.

Remember to read and follow the label

on all products.

Fungicides evaluated for cont r ol ofdollar spot in 2002.

The test was conducted at The OSU Turfgrass

Research Center, Columbus, OH on a stand of creep-

ing bentgrass established in 1997. Mowing height was

0.19," clippings were removed and the area was irrigat-

ed as needed. Fertilizer was applied with18-4-18 in

May (0.5 lb N/ 1000 sq ft). Th e soil was Crosby B silt

loam, pH 7.3. Individual plots measured 3 ft x 5 ft,

and were arranged in a randomized complete block

design with th ree replications. Treatments were

applied with a hand-held, CO 2-powered boom sprayer,

6503 TeeJet nozzles, 40 psi, water volume was 2.0gal/ 1000 sq ft. Treatments were started on June

11with the last application made September 24.Due to

above n ormal temperatures conditions were n ot con-

ducive for dollar spot until late summer and fall. The

experimental area was also inoculated with millet seed

inoculum in late Aug. No fungicide resistance to dol-

lar spot is known at the site.

Many treatments gave excellent control. Honor 50

WG 0.2 oz 14 days, Emerald 70 WG 0.13 oz 14 days,

Emerald 70 WG 0.18 oz 28 days, Propiconazole Pro

14.3 ME 2.0 fl oz 14 days, T methyl Pro 4.5 F and

50WP at 1.0 fl oz and 2.0 oz 14 days, Banner MAXX

1.3 MEC 1.0 fl oz 14 days, Banner MAXX 1.3 MEC 1.0

fl oz 21 days, Daconil Ultrex 82.5 WDG 1.6 oz and 3.2

oz 7 days, 3336 50 WP 2.0 oz 14 days, Chipco 26GT

2SC 4.0 fl oz 14 days, and MANhandle T & O WP 10.0

oz 21 days all demonstrated excellent d isease

management.



% plot area blighted by Dollar SpotApplication

Treatment and rate per 1000sq ft interval (day) 28 Aug 10 Sep 16 Sep 24 Sept 01 Oct

Untreated 2.33 10.00 13.67 11.00 18.33

Insignia 20 WG 0.9 oz 14 0.00 0.67 1.33 0.67 2.33Heritage 50 WP 0.4 oz 14 0.00 1.00 2.33 3.00 7.67Emerald 70 WG 0.13 oz.z

Insignia 20 WG 0.9 oz 14 0.00 0.00 1.00 0.33 1.00Honor 50 WG 0.2 oz 14 0.00 0.00 0.00 0.00 0.00Honor 50 WG 0.2 oz 28 0.00 0.00 0.33 0.00 0.00Emerald 70 WG 0.13 oz 14 0.00 0.00 0.00 0.00 0.00Emerald 70 WG 0.18 oz 21 0.00 0.00 0.00 0.33 0.00Emerald 70 WG 0.18 oz 28 0.00 0.00 0.00 0.00 0.00Propiconazole Pro 14.3 ME 1.0 fl oz 14 0.00 0.33 4.00 1.33 0.00Propiconazole Pro 14.3 ME 2.0 fl oz 14 0.00 0.00 0.00 0.00 0.00T methyl Pro 4.5 F 2.0 fl oz 14 0.00 0.00 0.00 0.00 0.00T methyl Pro 4.5 F 1.0 fl oz 14 0.00 0.00 0.00 0.00 0.00

T methyl Pro 50 WP 2.0 fl oz 14 0.00 0.00 0.00 0.33 0.00T methyl Pro 50 WP 1.0 fl oz 14 0.00 0.00 0.00 0.33 0.33Dow Rotationy 14 0.00 0.00 0.00 0.67 2.67Daconil Ultrex 82.5 WDG 3.2 ozv

Medallion 50 WP 0.33 ozBanner MAXX 1.3 MEC 1.0 fl ozHeritage 50 WP 0.2 oz 14 0.00 0.00 0.00 0.00 0.67Banner MAXX 1.3 MEC 2.0 fl oz 21 0.00 0.00 0.00 0.00 0.00Banner MAXX 1.3 MEC 1.0 fl oz 14 0.00 0.00 0.00 0.00 0.00Medallion 50 WP 0.33 oz 14 0.00 0.00 1.33 0.00 0.67Heritage 50 WP 0.2 oz 14 0.67 4.67 6.00 10.00 24.67Daconil Ultrex 82.5 WDG 3.2 oz 14 0.00 0.00 0.00 0.00 0.67

Banner MAXX 1.3 MEC 1.0 fl oz +Medallion 50 WP 0.33 oz 14 0.00 0.00 0.33 0.33 0.00Banner MAXX 1.3 MEC 1.0 fl oz +Heritage 50 WP 0.2 oz 14 0.00 0.00 0.00 0.00 0.00Banner MAXX 1.3 MEC 1.0 fl oz +Daconil Ultrex 82.5 WDG 3.2 oz 14 0.00 0.00 0.00 0.00 0.00Heritage 50 WP 0.2 ozz

Daconil Ultrex 82.5 WDG 3.2 oz 14 0.00 0.67 2.00 1.00 0.33Medallion 50 WP 0.33 ozz

Daconil Ultrex 82.5 WDG 3.2 oz 14 0.00 0.00 1.33 1.00 1.67Spectro 90 WDG 4.0 oz 14 0.00 0.00 1.33 0.67 0.33Heritage 50 WP 0.4 oz 28 0.33 1.33 5.67 7.33 6.33Banner MAXX 1.3 MEC 1.0 fl oz 21 0.00 0.00 0.00 0.00 0.33

Banner MAXX 1.3 MEC 0.5 fl oz 14 0.00 0.00 0.67 0.00 0.00Daconil Ultrex 82.5 WDG 3.2 oz 7 0.00 0.00 0.00 0.00 0.00Daconil Ultrex 82.5 WDG 1.6 oz 7 0.00 0.00 0.00 0.00 2.00Chipco 26GT 2SC 4.0 fl oz 14 0.00 0.00 0.33 0.00 0.33Zero Tol 12.0 fl oz 7 0.67 1.67 5.00 9.33 16.67Fertilizer (18-3-18) 44.4 oz 14 0.00 1.00 3.00 3.67 6.67Iprodione PRO 2 SC 4.0 fl oz 14 0.00 0.00 0.67 0.33 0.33Clearys 3336 50 WP 2.0 oz 14 0.00 0.00 0.00 0.00 0.00MANhandle T & O WP 10.0 oz 21 0.00 0.00 0.00 0.00 0.33LSD0.05 0.99 4.19 6.01 4.66 9.74

z Rotate between the materials on a 14 day interval.y Dow rotation 1. Eagle 40SP 0.6 oz, then Fore 75WG 6.0 oz, then Eagle 40SP 0.6 oz, then Eagle 40SP 0.6 oz, then ProStar 70 WG 1.5 oz,then Fore 75WG 6.0 oz, then Chipco 26GT 2SC 4 fl oz, each at a 14 day interval.v

Rotate thorough the materials on a 14 day interval

Table 2. Effect s of Fungicide Pr oducts, For mulations, Rates,and Timing on Cr eeping Bentgr ass Dollar Spot Incidence.


24/27

Co-Advisors:

Dr. David GardnerDr. John R. StreetDepartment of Horticulture and Crop Science

The Ohio State University

OTF TurfNews Vol 65 No. 4 2003 Page 24

Richards previous education includes a

Bachelor of Science degree in Agronomy

from Delaware Valley College and a Master of

Science degree in Turfgrass Management from Cook

College, Rutgers University. His masters thesis

research studied the effect of management practices

on the root growth of bentgrass.

The goal of Richards research is finding ways of

reducing Nitrogen (N) fertilization inputs to turfgrass

systems. The idea behind the research is that the lawncare industry continues to be scrutinized because of

the belief that fertilizers pollute the environment.

Likewise many perceive manicured lawns as an unnec-

essary use of limited resources. Fertilization practices

that would reduce Nitrogen inputs without sacrificing

tur fgrass quality would dem onstrate a proactive

approach to addressing these concerns.

The research will pursue two areas of study. First,

the research will evaluate the fertility requ iremen t of

Kentucky bluegrass blends consisting of darker green

versus more moderate green cultivars. It is speculated

that darker green cultivars may have a lower seasonal

N requirement and may also provide more consistentquality between fertilizer applications. Second, the

research will evaluate the Illinois Nitrogen Test

(INT) for turfgrass use. The INT is a new test that

holds great promise in accurately fertilizing corn. The

test measures the amount of N released from the

organic matter in soil and can be used by farmers to

assess the need to add fertilizer. It is hoped that the

INT can quan tify the amoun t of N released from the

organic matter in mature turfs thereby allowing a cor-

responding reduction in fertilizer rate.

Richard began his graduate study at Ohio State in

the fall of 2002. Richard is pursuing a Ph.D. degree

under the guidance of Dr. Dave Gardner and Dr. John

Street of the Department of Horticulture and Crops

Science.

Disser tation Tit le

Finding Ways of Reducing

Nitrogen Fertilization Inputsto Turfgrass Systems

Graduate Student CornerDisser tation Tit le

Finding Ways of Reducing

Nitrogen Fertilization Inputsto Turfgrass Systems

Student: Richard Rathjens

Degree: Ph.D.



Nor ther n Ohio Having FunRaising Funds!T

he Northern Ohio GCSAA works very hard each year to raise money for our

Research and Scholarship fund. As of 2003, we hold two fund-raisers per year;

a golf outing and a reverse raffle.

The golf outing is hosted by Windmill Lakes Golf Club and Bob Doty with a clam-

bake following. Windmill has hosted the Annual Clambake and Golf outing for 12

years. It started as an end of the year golf outing where members could get together

for an inexpensive and informal day of golf and fun. Since th is event trad itionally hosts

a full field the members of Northern O hio decided to combine the Research and

Scholarship outing with the Annual Clambake four years ago. Moneys are raised forthe research and scholarship fund th rough tee sign donations and raffles. Other hosts

to this outing have been Fowlers Mill Country Club and the Cleveland Metro Parks

Sleepy Hollow Golf Course.

The hospitality from Windmill Lakes Golf Club has been phenomenal over the

years. They are gracious enough to donate th e golf and carts for the day. Without their

generosity this event would not be as successful or attract so many superintendents

from around Ohio and Pennsylvania. This outing hosts a full field of 156 golfers and

Sinatra Catering serves 180 for d inner every year. Through the generosity of everyone

involved we are able to raise approximately $4,000 every year.

Beginning in 2003 we incorporated a reverse raffle into our schedule to help fund

new research projects. This annual event is held in March in Kent, Ohio. Bob Doty,

Lenny Marino, and Steve Blackburn do a wonderful job orchestrating this event. The

best thing about this event is that it is not supported solely by our membership, but by

friends and family of the association also. Surprising to all we sold 200 tickets and

raised over $5,000 for the Research and Scholarship fund.

With the tremendous support of our members, friends and family we are now in

the process of choosing a project to be researched at Ohio State University. We will

also be starting a new scholarship program for our membership that will mirror the

GCSAA Legacy Scholarship.

A special Thank You goes out to everyone who has supported the North ern Oh io

GCSAA throughou t the years.

Bob Doty and Michelle Fr azier, CGCS

OTF GuestC O L U M N

Windmill ScrambleLeft- John Maje rnik, CGCS Right- Bob Duty

Reverse RaffleL-R Bob Duty, Lenny Mar ino, Steve Blackburn



Message From YourDirector of Education

this year will be the opening of the tradeshow on

Tuesday evening. The tradeshow preview will be pre-

ceeded by an Open ing Preview Address by Coach

Earle Bruce. Coach Bruce was Head Football Coach

for n ine years at OSU compiling a record of 81-21-1.He also was assistant coach under Woody Hayes when

they won the National Championship in 1968. Coach

Bruce was inducted into the College Football Hall of

Fame in 2002.

He has written two books. Coach Bruce will sign

autographs, books, and take photosso bring your

camera and signage items. It should be a Buckeye

Extravagansa. Wednesday will feature a great early

morn ing session prior to the trade show opening by

Dr. Leah Brillman on new developments in Kentucky

bluegrass and perennial ryegrass breeding and selec-

tion criteria. Dr. Brillman is a world renown tur fgrass

breeder with Seed Research of Oregon. The KeynotePresentation will follow. Wednesday afternoon will fea-

ture breakou t sessions for golf, sports tur f, profession-

al lawns/ grounds, and sod production. A great work-

shop on tur fgrass insects will be offered on

Wedn esday evening. Th ursday will feature breakou t

sessions all day on a wide variety of agronomic and

business topics. Thursday will climax with powerful

panels in golf and sports tur f with panelists from golf

course, sports fields, industry, and universities. Friday

will offer breakout sessins on golf, sports turf, profes-

sional lawns/ grounds, and turf pest management

issues. The highly acclaimed Breakfast with the

USGA will start early morning Friday for golf course

personnel. Friday PM will offer attendees the opportu-

nity to take the O DA Pesticide Licensing Exam.

Remember, all workshops sessions will be credited

by ODA, GCSAA, and STMA. Join us for several days

of great education,comradery, professional enhance-

ment, and after comradery.

CASH IN AND MAKE YOUR FUTURE GREENER.

John R. StreetDirector of Education

Two major OTF/ OSU sponsored events are stillupcoming in 2003. The O SU Tur fgrass Research Fieldis scheduled fior August 13 at the OTF Research and

Educational Facility, Columbus, Ohio. This is a great

opportunity firsthand to view ongoing research in a

variety of agronomic, plant pathology, and entomolo-

gy areas. It is also a great time to visit with OSU

researchers one on one. Second , the Ohio Turfgrass

Conference and Show is set for December 9-12. There

are some changes in format so read carefully.

The most significant change to the conference and

show is the move from a Monday-Thursday format to

a Tuesday-Friday format. So mark this down please,

the 2003 Ohio Turfgrass Conference and Show will be

held Tuesday through Friday, December 9-12.Tuesday will featu re a variety of all day workshops.

Dr. Ed McCoy will offer a GCSAA accredited work-

shop on soils. Dr. Dave Minner (Iowa State University)

will offer an all-day sports turf workshop on field man-

agement for wear and compaction. OSU faculty and

staff will offer an all-day workshop on pesticide tech-

nology.

Finally, an all-day workshop will be offered to assis-

tant superintendents, foreman and technicians.on a

variety of agronomic and safety topics. A new feature

Mark Your Calendars Right


27/27

2003 OTF OfficersPresident

John MowatCentury Equipmen t

Vice PresidentGeorge FurrerLesco, Inc.

Treasurer

Dr. Chuck DarrahCLC LABS

Immediate Past PresidentMark HeinleinThe Motz Group

Director of EducationDr. John R. StreetThe Oh io State Un iversity

Executive DirectorKevin ThompsonOTF/ Offinger Management Co.

OSUTurfgrassScience TeamDr. Michael J. BoehmThe Ohio State UniversityDept. Plant Pathology

Dr. Karl DannebergerThe Ohio State UniversityDept. Hort. & Crop Science

Mr. Michael FultonThe Ohio State UniversityAgricultural Techn ical Institute

Dr. David GardnerThe Ohio State UniversityDept. Hort. & Crop Science

Dr. Parwinder GrewalOARDC/ OSUDept. Entomology

Dr. Ed McCoyOARDCSchool of Natural Resources

Mr. Joseph W. Rimelspach (Chairman)The Ohio State UniversityDept. Plant Pathology

Ms. Pamela SherrattThe Ohio State UniversityDept. Hort. & Crop Science

Dr. Dave ShetlarThe Ohio State UniversityDept. Entomology

Dr. John R. StreetThe Ohio State UniversityDept. Hort. & Crop Science

Dr. Daniel VoltzThe Ohio State UniversityAgricultural Techn ical Institute

OTF Board of TrusteesTrustees

Term Expires 2004Boyd MontgomerySylvania Recreation

Lin RoppUHS

Todd VossDouble Eagle Golf Club

TrusteesTerm Expires 2005

Glen PottengerLarch Tree Golf Course

TrusteesTerm Expires 2006

Mark GrunkemeyerBuckeye Ecocare

Mark JordanWestfield Companies Country Club

Dan WalterCity of Blue Ash Golf Course

PO Box 3388

Zanesville, OH 437023388

888OTF3445

Fax (740) 4522552

Return Service Requested

PRESRT STD

U.S. POSTAGE P

COLUMBUS, OH

PERMIT #7780

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