SC 325 High Tunnel System Jobsheet

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Requirements

- Thepracticerequires crops to begrowninthe naturalsoilprofile. Raisedbeds haveamaximumof12inchdepth.

-Locateand avoidburiedpublicutilities.See page 2

-Locatethestructurenearaviablewatersourceforirrigation.

-Thehightunnelstructuremustbeplanned,designed,andconstructedfromamanufacturedkitinaccordancewithmanufacturers’recommendations.

-Thehightunnelframemustbeconstructedofmetal,wood,ordurableplastic;andbeatleast6feetinheightatthepeak ofthestructure.

- Cover should be aminimum6-milgreenhousegrade,UV-resistantmaterial with a 4-year minimumlifespan.

- Constructhightunnelstructuresonlevelgradeordonotexceedfivepercent slopes.

Manage thehightunnelsystemtomaintainorimprovesoilhealthbyfollowingasoilmanagementsystemthatcreatesafavorablehabitatforsoilmicrobesby:

  • minimizingsoildisturbance,physical,chemicalandbiological
  • usingplantdiversityintherotationtoincreasediversitybelowground
  • keepingalivingrootgrowingyearroundasmuchaspossible
  • keepingthesoilcoveredwithresidueandgrowingplantsyearround

HighTunnelSystemLocationandConstruction
  • Locateyourhightunnelstructureoncroplandthatprovidesbestavailablegrowingconditionsforyourdesiredcrops.
  • Selectahightunnelsiteafterconsiderationofyourland’sslope,sunexposure,soilquality,soilfertility,waterdrainage,airdrainage,riskofherbicidecarry-over,andriskofsoilpests.
  • Thesitemustberelativelylevelandwelldrained,sowaterdoesnotpondbetweentherows
  • Orient yourtunnelinadirectionthatprovidesacceptablesunlightexposureforthecropstobegrown;andgoodventilationbytheprevailingwind.
  • Thesitelocationmusthaveaccesstoenoughcleanirrigationwatertomeetyourcropneedsandallowyoutocarryoutnormalfarmingoperationswithoutdamagingthestructure.
  • Atleast4-5workingdaysbeforeyoustartbuilding,requestmarkingofundergroundutilitiesintheconstructionareabytelephoningtheSC Utility location service: 811 or (888) 721-7877.Thisisafreeservice.
  • Preparethesiteaccordingtomanufacturer’sinstructions.
  • Assemblethehightunnelstructureaccordingtomanufacturer’sinstructions.
  • Installsupportingpracticesasrequired,accordingtoconstructionplansprovided.
  • ContactNRCSwhen yourworkiscompleted,orbeforeyoumakechangestoyouplannedinstallation.

OperationandMaintenance
  • Growcrops underthehightunnelinthenaturalsoilprofile-notonbenches,tables,orinpots.Raisedbedsmaybeinstalledtoimprovesoilcondition,fertility,andaccess.Raisedbedsareamaximumof12inchesindepth.
  • Operatethehightunneltomanagetemperatureandmoistureaccordingtothetolerancesofcropsgrown.
  • Donotusethehightunneltoprovideshelterorhousingforanylivestock,ortostoresuppliesorequipment.
  • Followmanufacturer’sinstructionsforoperationandmaintenanceofthehightunnelstructure.
  • Periodicallyinspectstructureandcoverfordamage.Reinstallorrepairpromptly.
  • Avoiddamagetostructurefromequipmentoperatedinandaroundtheseasonalhightunnel.
  • Inspectrunoffcontrolmeasuresaftereverysignificantrainfallevent.Repairpromptly.
  • Ifthehightunnel’scoverisremovedtoprotectitfrom damagingsnowloads,tropicalstorms,orhurricanes-replacethecoverpriortousingthetunnelagain.
  • Ifthehightunnelisrelocated,re-installrunoffcontrolpracticesneededtopreventsoilerosionandwaterponding.

AdditionalSpecificationsandNotes:

CONSTRUCTIONCHECKOUT

HighTunnelStructure–as-builtmeasurements
Length(ft): / Height inCenter (ft):
Width(ft): / StructureManufacturer:

CERTIFICATIONS

JobSheet

Preparedby:

Title:

Date:

Approvedby:

Title:

Date:

Installation

MeetsNRCSstandardsandspecifications?YESNO

Certification by:

Date