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Integrated Turfgrass Management
University of Nebraska—LincolnExtension
Select Adapted Grasses
Environmental conditionsSoil typeIntensity of useIntensity of culturePest thresholds
Photo: University of Nebraska
Kentucky Bluegrass Adaptation
Variety of soilsCool conditionsGood cold toleranceDrought tolerancePoor shade toleranceRecuperative potentialHigh thatch potential
Photo: University of Nebraska
Tall Fescue AdaptationVariety of soilsCool conditionsGood high temperature toleranceDrought avoidanceShade toleranceLow compacted soil tolerance
Photo: University of Nebraska
Buffalograss AdaptationFiner textured soilsHeat toleranceDrought tolerantReduced management inputsPoor shade tolerancePoor salt toleranceShort growing season
Photo: University of Nebraska
Use Weeds as “Indicators”
Legumes (white clover, black medic, birdsfoot trefoil), sandbur, and ground ivy may indicate low nitrogen levels
Photo: University of Nebraska
Use Weeds as “Indicators”
Algae and moss may indicate excess moistureCrabgrass and annual bluegrass may indicate low mowing heights
Photo: University of Nebraska
Use Weeds as “Indicators”Knotweed, goosegrass, and crabgrass may indicate compacted soilGround ivy and violet may indicate excessive shade
Photos: University of Nebraska
Use Diseases as “Indicators”Disease presence may be enhanced by:
Improper watering practicesLow or high nitrogen fertility levelsSpread of clippingsHigh thatch layers
Photos: University of Nebraska
Use Insects as “Indicators”
Healthy turf can withstand many insect infestations, especially with proper irrigation and thatch management programs
Photos: University of Nebraska
Management of many pests can be accomplished through proper management practices
MowingFertilizingIrrigationCultivation
Mowing is the Ultimate Integrated Pest
Management (IPM) Tool
Photo: University of Nebraska
Mowing Height Recommendations
Kentucky bluegrass: ¾–3½ inches (preferred 2-3½ inches)Buffalograss: ½ inch to unmown(preferred 2 inches to unmown)Tall fescue: 1-4 inches (preferred 2-4 inches) Lower mowing heights only for special situations (ie. athletic field turf)
Mowing Height and Rooting Depth
Shorter mowing heights result in:Decreased rooting Higher maintenanceIncreased pest problems
Irrigation TimingEarly morning (4-10 a.m.) to reduce leaf wetness and disease incidenceFor root feeding insects (ie. grubs):
Prior (in dry soils) and after insecticide applications to move insects higher in soil profile
Photo: University of Nebraska
Seasonal Irrigation Frequency
Water to the depth of the root systemCool-season turfgrasses often exhibit root dieback in the summerFor low traffic areas allow Kentucky bluegrass to go into summer dormancy
Fertilizer Application Timing and Rate
Application Timing N / 1000 ft2
1 April 20-May 10 0.5 –
1.0 lb
2 June 5 –
June 15 0.75 –
1.0 lb
3 September 1 – September 15
0.75 –
1.0 lb
4 October 15 – November 15
1.0 –
1.5 lbs
Calendar for cool-season turfs
Fertilizer Application Timing
Avoid heavy nitrogen fertilization in the summerFall applications important for recovery from summer stresses and to prepare for the next season’s growth
Desired Cultivation TimingAvoid cultivation during high stress periodsSpring and fall provide optimal growing conditions for cultivation on cool-season turfgrasses
CreditsContent Specialists
Anne Streich, UNL ExtensionRobert Shearman, UNL ExtensionRoch Gaussoin, UNL Extension
Content EditorErin Bauer, UNL Extension
PhotosAnne Streich, UNL ExtensionRobert Shearman, UNL Extension
CreditsPhotos cont.
John Watkins, UNL ExtensionDon Steinegger, UNL ExtensionRoch Gaussoin, UNL ExtensionDepartment of Entomology, University of Nebraska—Lincoln