managing kentucky bluegrass in the heat at university of evansville bob dale supervisor of grounds...
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Managing Kentucky Bluegrass in the Managing Kentucky Bluegrass in the
Heat at University ofHeat at University of EvansvilleEvansville
Bob Dale
Supervisor of Grounds
University of Evansville
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Kentucky Bluegrass in Kentucky Bluegrass in EvansvilleEvansville
Why??!!Why??!!
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Favorable Characteristics of Favorable Characteristics of Bluegrass Bluegrass
Excellent densityExcellent densityGood surface resiliencyGood surface resiliencyGood recovery from damageGood recovery from damageExcellent spring and fall colorExcellent spring and fall colorModerate drought toleranceModerate drought tolerance
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Does Bluegrass Fit Our Does Bluegrass Fit Our Seasons of Play?Seasons of Play?
January 18January 18thth Start of Practice (Baseball\ Start of Practice (Baseball\Softball)Softball)
February 18February 18thth Home Opener Home OpenerMid-end of May: Last Regular Season Mid-end of May: Last Regular Season
GameGame
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Seed Variety SelectionSeed Variety Selection
Used NTEP trials (USDA) Used NTEP trials (USDA) www.ntep.orgwww.ntep.org
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Qualities RatedQualities Rated
Winter ColorWinter ColorTransition Zone QualityTransition Zone QualitySpring GreenupSpring GreenupGenetic ColorGenetic ColorMowing Height at 1-2”Mowing Height at 1-2”Summer Patch ResistanceSummer Patch ResistanceDrought ToleranceDrought Tolerance
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Qualities WeightingQualities Weighting
Trans. Zone Quality 3XTrans. Zone Quality 3XSpring Greenup, Summer Patch Spring Greenup, Summer Patch
Resistance, Drought Tolerance 2XResistance, Drought Tolerance 2XAll others 1XAll others 1X
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Mild Soil Temp AdjustmentMild Soil Temp AdjustmentAbout 4-5 degrees FAbout 4-5 degrees F
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December ‘01December ‘01
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Good Communication is KeyGood Communication is KeyElement to MaintenanceElement to Maintenance
Document problem areas, stress factors Document problem areas, stress factors and environmental conditionsand environmental conditions
Share those with coaches (These are X’s Share those with coaches (These are X’s and O’s to them)!!and O’s to them)!!
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Aeration is varied between hollow and Aeration is varied between hollow and solid tines and from 1”-5” depthssolid tines and from 1”-5” depths
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When Necessary, We When Necessary, We ImproviseImprovise
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Signage and Communication are Signage and Communication are Key ElementsKey Elements
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Limit Traffic Whenever Limit Traffic Whenever Possible or NecessaryPossible or Necessary
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Common Diseases of Cool Common Diseases of Cool Season GrassesSeason Grasses
PythiumPythiumBrown PatchBrown PatchDollar SpotDollar SpotNecrotic Ring SpotNecrotic Ring SpotSummer PatchSummer Patch
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Summer PatchSummer PatchUse of high potassium organic fertilizer with Use of high potassium organic fertilizer with
fair amount of sulfur (4%) and Banner Maxxfair amount of sulfur (4%) and Banner MaxxRaise mowing height from 1-1/4” to 2”Raise mowing height from 1-1/4” to 2”Avoid frequent irrigationAvoid frequent irrigation
How We Control Problem How We Control Problem DiseasesDiseases
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FERTILIZATIONFERTILIZATION
Combinations of organic, IBDU and WSN Combinations of organic, IBDU and WSN sourcessources
6#N per year, all others based on soil tests (2x\6#N per year, all others based on soil tests (2x\year) and tissue testing on the sand based areayear) and tissue testing on the sand based area
Micronutrients every two weeks in the summerMicronutrients every two weeks in the summer Make certain of late season fertilizationMake certain of late season fertilization
How we leave it in November, is what we will play How we leave it in November, is what we will play on in February!!on in February!!
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Weed ControlWeed Control
Primarily spot treatments in MayPrimarily spot treatments in MayA poor stand of grass is not a result of A poor stand of grass is not a result of
weeds. Weeds are a result of a poor stand weeds. Weeds are a result of a poor stand of grassof grass
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Summary of our Most Summary of our Most Difficult ProblemsDifficult Problems
Disease Disease Control with combination of cultural and Control with combination of cultural and
chemicalchemicalTiming and height of mowing Timing and height of mowing Judicious wateringJudicious watering
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Summary of Difficult Summary of Difficult ProblemsProblemsSummer PlaySummer Play (Tournaments in June, July (Tournaments in June, July
and August)and August)Insist on knowing the schedule well in Insist on knowing the schedule well in
advance and prepare the field for those eventsadvance and prepare the field for those eventsYou don’t want to have your fungicide You don’t want to have your fungicide
application nearing its end of effectiveness application nearing its end of effectiveness just prior or during a 3 day long tournament!just prior or during a 3 day long tournament!
Build the moisture level slowly prior to, and Build the moisture level slowly prior to, and water heavily following the tournamentswater heavily following the tournaments
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Summary of Difficult Summary of Difficult ProblemsProblems
Slow Establishment of BluegrassSlow Establishment of BluegrassSeed as early in fall as possibleSeed as early in fall as possiblePre germ when possible…as a last resort, we Pre germ when possible…as a last resort, we
might use some ryemight use some rye
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Summary of Difficult Summary of Difficult ProblemsProblems
Slow Establishment of BluegrassSlow Establishment of BluegrassSeed as early in fall as possibleSeed as early in fall as possiblePre germ when possible…as a last resort, we Pre germ when possible…as a last resort, we
might use some ryemight use some ryeRecognize bluegrass is a very heavy feeder Recognize bluegrass is a very heavy feeder
that needs 1#N every growing month during that needs 1#N every growing month during establishment establishment
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Know Your FieldKnow Your Field
Recognize and correct problems earlyRecognize and correct problems earlyDocument problems and times they occur Document problems and times they occur
to prevent them in the futureto prevent them in the futureShare your findingsShare your findingsLook at your field daily, if you want to be Look at your field daily, if you want to be
outstanding in OUR field…..outstanding in OUR field…..
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You Better Be Caught Often You Better Be Caught Often Out Standing InOut Standing In YOUR YOUR Field!Field!
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Questions or CommentsQuestions or Comments