Designation:F2269−11(Reapproved2018)AnAmericanNationalStandardStandardGuideforMaintainingWarmSeasonTurfgrassesonAthleticFields1ThisstandardisissuedunderthefixeddesignationF2269;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisguidecoverstheminimumrequirementsformain-tainingwarm-seasonturfgrassesusedfornaturalsurfaceath-leticfields.Practicescoveredincludemowing,fertilization,irrigation,corecultivation,winteroverseeding,pestmanagement,andrequirementsformanagementofdormantturfwinteroverseededwithcool-seasonturf(seealsoGuideF2060).1.2Thedecisionsinvolvedinmaintainingaqualitynaturalplayingsurfaceshouldconsidersoiltypes,localclimateandotherfactors.Therefore,itisrecommendedthatyoucontactyourlocalcooperativeextensionserviceformorespecificinformationonsoils,andgrassspeciesandcultivarsadaptedtoyourarea.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesinparenthesesareforinformationonly.1.4Thisstandardmayinvolvehazardousmaterials,operations,andequipment.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafety,health,andenvironmentalprac-ticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2F2060GuideforMaintainingCoolSeasonTurfgrassesonAthleticFieldsF2651TerminologyRelatingtoSoilandTurfgrassCharac-teristicsofNaturalPlayingSurfaces3.Terminology3.1Definitions:3.1.1Exceptasnoted,soil-relatedandturfgrass-relateddef...
