Seasonal High Tunnel System for Crops Interim Conservation Practice Job Sheet 798




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Interim NE-CPA-798

Seasonal High Tunnel System for Crops

Interim Conservation Practice Job Sheet 798


Photo Source: www.hightunnels.org
Definition

A seasonal high tunnel is a polyethylene covered structure with no electrical, ventilation, or heating system, at least 6 feet in height, which modifies the climate to create more favorable growing conditions for vegetable and other specialty crops grown in the natural soil within the covered space.

Purpose

The purpose of the seasonal high tunnel is to extend the crop growing season, improve plant quality, improve soil quality, and improve water quality from reduced nutrient and pesticide transport.



Where used

A seasonal high tunnel may be used where existing specialty commodity crops are grown in open field conditions, and extension of the growing season is needed due to climate conditions.

Commercially available high tunnel structures are made in numerous widths and lengths. The high tunnels are constructed of metal or plastic bow frames that are covered with a single layer of polyethylene. Ventilation is achieved by means of a combination of roll-up side vents, end vents, and occasionally, roof vents. Generally, the end walls are framed-in to create door and ventilation areas. The high tunnel structure covers several crop rows, is wide enough to allow crop growth to full maturity under the tunnel, and is tall enough to allow spraying, cultivation and harvest to occur with the tunnel intact.

Conservation management system

Water runoff from the high tunnels or from other nearby sources can cause erosion and ponding issues that may require the application of other practices such as infiltration trenches, diversions, underground outlets and critical area plantings. These additional practices must be planned and installed as a condition for the installation of a high tunnel. Additional practices should be considered as a part of a conservation plan, such as nutrient and pest management and crop rotation.




Seasonal High Tunnel System – Job Sheet
Producer________________________ Location ___________________________

Field Office ______________________ Conservation Contract _________________



Materials List


  • High Tunnel Structure with 4 year manufacturer’s warranty, size(s) ______________________

  • Polyethylene cover, minimum 6-mil greenhouse grade, UV resistant

Supporting Practices Required:

  • Manufactured Gutter System

  • Critical Area Planting (job sheet attached)

  • Infiltration Trench along each side (construction plan attached)

  • Underground Outlet (construction plan attached)

  • Diversion (construction plan attached)

  • Sediment Basin (construction plan attached)

  • Other ____________________________________________________________________

High Tunnel System Construction

  • Obtain all necessary permits prior to construction.

  • Contact the Nebraska OneCall System at 1-800-833-7352 at least 2 working days in advance of construction, for location of underground utilities.

  • Prepare site according to manufacturer’s instructions.


  • Lay out building location according to site plan.

  • Assemble high tunnel structure according to manufacturer’s instructions.

  • Install supporting practices as required, according to construction plans provided.

Operation and Maintenance


  • Periodically inspect structure and cover for damage. Reinstall or repair promptly.

  • Follow manufacturer’s instructions for operation and maintenance of the high tunnel structure.

  • Avoid damage to structure from equipment operated in and around the seasonal high tunnel.

  • Inspect runoff control measures after every significant rainfall event. Repair promptly.

  • These are intended to be seasonal structures and may not be designed to sustain a heavy snow load. Follow manufacturers’ recommendations regarding care and maintenance of the polyethylene cover. If necessary, remove and store the cover at the end of each growing season and replace it prior to use in the spring.






Seasonal High Tunnel System – Layout and Location
Plan view of seasonal high tunnel system site shown below.
Scale 1"=________ ft. (NA indicates sketch not to scale: grid size=1/2" by 1/2")










































































































































































































































































































































































































Additional Specifications and Notes:









Design Certification


This Seasonal High Tunnel System plan meets the requirements of NRCS Conservation Practice Standard 798.

__________________________________ ______________________________ ____________

Signature Title Date




Seasonal High Tunnel System – Construction Checkout

Seasonal High Tunnel Structure – as-built measurements

Length (ft)

Height in Center (ft)

Width (ft)

Structure Manufacturer



Supporting Practices Installed


  • Manufactured Gutter System

  • C
    Quantities and detailed checkout information for supporting practices shall be documented separately.
    ritical Area Planting

  • Infiltration Trench along each side

  • Underground Outlets

  • Diversion
  • Other _________________________________________________________



CHECK OUT:
Amount Completed: _____________square feet. Mark As-Built location on plan map.
Remarks____________________________________________________________________
This practice meets NRCS standards and specifications □ Yes □ No
Check out by: ____________________________________ Date: ______________

The United States Department of Agriculture (USDA) prohibits discrimination in its programs on the basis of race, color, national origin, sex, religion, age, disability, political beliefs and marital or familial status. (Not all prohibited bases apply to all programs.) Persons with disabilities who require alternative means for communication program information (Braille, large print, audiotape, etc.) should contact the USDA Office of Communications (202) 720-2791.
To file a complaint of discrimination write USDA, Director, Office of Civil Rights, Room 326-W, Whitten Building, 14th and Independence Avenue, SW, Washington, DC 20250-9410 or call (202) 720-5964 (voice or TDD). USDA is an equal opportunity provider and employer.
Seasonal High Tunnel System – First Year Annual Report page 1 of 2
Producer________________________ Location ___________________________

Field Office ______________________ Conservation Contract _________________



Report Date _____________________
Report Due On or Before December 15, _____


  • Actual cost of Seasonal High Tunnel System $______________ (attach copies of bills)



  • First year maintenance requirements : (add more sheets if necessary)

Activity or Item (list)

Cost




$





















  • Two years of cropping history before installation of Seasonal High Tunnel: (add more sheets if necessary)

Crop (type)

Crop Year

Yield

Nutrients (Fertilizer)

Pesticide(s)

Type

Rate

Timing

Type

Rate

Timing
















































































































  • First year’s crop in Seasonal High Tunnel:

Crop (type)

Crop Year

Yield

Nutrients (Fertilizer)

Pesticide(s)

Type

Rate

Timing

Type

Rate

Timing























































Seasonal High Tunnel System – First Year Annual Report page 2 of 2

  • Growing season (2 past years, plus the first year in the Seasonal High Tunnel):

Crop (type)

Crop Year

Season Dates

Length of Growing Season (Days)












































































  • Benefits for plant quality: _____________________________________________

  • Benefits for soil quality: ______________________________________________

  • Benefits for water quality: ____________________________________________

  • Producer’s recommendations and observations:

________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Seasonal High Tunnel System – Second Year Annual Report
Producer________________________ Location ___________________________

Field Office ______________________ Conservation Contract _________________



Report Date _____________________

Report Due On or Before December 15, ______

  • This year’s maintenance requirements : (add more sheets if necessary)

    Activity or Item (list)

    Cost




    $



















  • This year’s crop in Seasonal High Tunnel:

    Crop (type)

    Crop Year

    Yield

    Nutrients (Fertilizer)

    Pesticide(s)

    Type

    Rate

    Timing

    Type

    Rate

    Timing























































  • This year’s growing season:

    Crop (type)

    Crop Year

    Season Dates

    Length of Growing Season (Days)

























  • Benefits for plant quality: _____________________________________________

  • Benefits for soil quality: ______________________________________________

  • Benefits for water quality: ____________________________________________

  • Producer’s recommendations and observations:

_________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Seasonal High Tunnel System – Third Year Annual Report
Producer________________________ Location ___________________________

Field Office ______________________ Conservation Contract _________________



Report Date _____________________

Report Due On or Before December 15, ______

  • This year’s maintenance requirements : (add more sheets if necessary)

    Activity or Item (list)

    Cost




    $



















  • This year’s crop in Seasonal High Tunnel:

    Crop (type)

    Crop Year

    Yield

    Nutrients (Fertilizer)

    Pesticide(s)

    Type

    Rate

    Timing

    Type

    Rate

    Timing























































  • This year’s growing season:

    Crop (type)

    Crop Year

    Season Dates

    Length of Growing Season (Days)

























  • Benefits for plant quality: _____________________________________________

  • Benefits for soil quality: ______________________________________________

  • Benefits for water quality: ____________________________________________

  • Producer’s recommendations and observations:

______________________________________________________________________________________________________________________________________________________________________________________________________

Job Sheet – Seasonal High Tunnel February 2010

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