High Tunnel Coverings, Screens, &       Exclusion Materials     by Donald L. Josko, BFG     djosko@bfgsupply.com
What Covering Technologies Are   Available To High Tunnel Growers?•Poly Films•Thermo Reflective Screens•Pest Screens/Barri...
Types Of External Layer PolyClear 6 mil 4 year Film        Light Diffusing 6mil Poly Superior Light Transmission   Effecti...
Internal Film IR/AC 6mil Clear FilmBee FriendlyCondensation ResistantEnergy Savings
10mil Nylon Corded Poly3-Ply with internal nylon cordsTear / Puncture ResistantCold Crack ResistanceLight WeightExtremely ...
Thermo Reflective ScreensAluminet Energy Savings 15-45%   Shade 30-70%Cools CropsProtects Against FrostUse Aluminet I (Ins...
Pest Screen Barriers Screen Sizing                       Thrip ScreenPest           Screen SizeLeafminer      0.025” (640 ...
Bird /Bat Screens   Deer Fence
Weed Guard   OMRI Listed*Weed Control * Conserves Moisture*Till into the Ground in Fall*Fertilizer Enriched 5-5-5
Hail/Wind/Diffused Light ScreensChromati Net Pearl                        Chromati Net Red •Significant Improvement in fru...
Types Of ChromatiNet TypesPearl                  Benefits                  • Higher Yield s                  • Heavier Pla...
Grey   Benefits       •   Heavier Branching       • Higher Yield of Stems       • Use in Orchards, Vineyards,         Vege...
ChromatiNet Red   Benefits                  • Increased Fruit size                  • Improves Crop Quality               ...
Row Covers   • Dewitt     – Deluxe- .5 oz        • 4 degrees warmer Than Outside          Air        • Used for seed germi...
Frost Barrier     • Dewitt Products       – Supreme 1.5 oz          • 6-8 degrees protection       – Ultimate 3 oz        ...
Freeze Pruf   Benefits              • Quick Application              • 6-8 degrees Safety Net              • Environmental...
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High tunnel coverings,screens, & exclusion materials 2012

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by Donald Josko. Presented at the 2012 MN Statewide High Tunnel Conference.

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High tunnel coverings,screens, & exclusion materials 2012

  1. 1. High Tunnel Coverings, Screens, & Exclusion Materials by Donald L. Josko, BFG djosko@bfgsupply.com
  2. 2. What Covering Technologies Are Available To High Tunnel Growers?•Poly Films•Thermo Reflective Screens•Pest Screens/Barriers•Hail/Wind Protection w Light Diffusing Technology Screens
  3. 3. Types Of External Layer PolyClear 6 mil 4 year Film Light Diffusing 6mil Poly Superior Light Transmission Effective Diffused Light Excellent Strength Under High Light Transmission Proper Conditions Excellent Thermic Properties Excellent PAR Light
  4. 4. Internal Film IR/AC 6mil Clear FilmBee FriendlyCondensation ResistantEnergy Savings
  5. 5. 10mil Nylon Corded Poly3-Ply with internal nylon cordsTear / Puncture ResistantCold Crack ResistanceLight WeightExtremely Durable
  6. 6. Thermo Reflective ScreensAluminet Energy Savings 15-45% Shade 30-70%Cools CropsProtects Against FrostUse Aluminet I (Inside)
  7. 7. Pest Screen Barriers Screen Sizing Thrip ScreenPest Screen SizeLeafminer 0.025” (640 micron)Melon Aphid 0.013”(340 microns)Whitefly 0.018”(462 microns)Western Flower Thrip 0.0075” (192 microns)
  8. 8. Bird /Bat Screens Deer Fence
  9. 9. Weed Guard OMRI Listed*Weed Control * Conserves Moisture*Till into the Ground in Fall*Fertilizer Enriched 5-5-5
  10. 10. Hail/Wind/Diffused Light ScreensChromati Net Pearl Chromati Net Red •Significant Improvement in fruit quality and higher yields! •Physical Protection against wind, hail, birds, and bats! •Protects Against Sunburn and Abrasion of Crop •Creates a Micro-Climate
  11. 11. Types Of ChromatiNet TypesPearl Benefits • Higher Yield s • Heavier Plant Mass – Increased secondary Branching – -Beneficial for Leaf & Stem Plants (Herbs, Leafy Vegetables) • Better Quality • Avable in 30,40,50,60% Shade
  12. 12. Grey Benefits • Heavier Branching • Higher Yield of Stems • Use in Orchards, Vineyards, Vegetables, Small Fruits • Frost Protection – Blocks Infrared (IR)radiation • Available in: • 30,40,50,60,70,80
  13. 13. ChromatiNet Red Benefits • Increased Fruit size • Improves Crop Quality – Less Scaring – Increased Brix (Sugar content) • Use in Orchards, Vineyards, Peppers, Leafy Vegetables Small Fruits Available In : 30,40,50,60,70% Shade
  14. 14. Row Covers • Dewitt – Deluxe- .5 oz • 4 degrees warmer Than Outside Air • Used for seed germination – Deluxe Plus 1 oz • 4-6 degrees Higher • Used as a Growing On Product • Insect and Mammal Barrier • Wind & Scorch Barrier
  15. 15. Frost Barrier • Dewitt Products – Supreme 1.5 oz • 6-8 degrees protection – Ultimate 3 oz • Up to 10 degrees protection
  16. 16. Freeze Pruf Benefits • Quick Application • 6-8 degrees Safety Net • Environmentally Safe.

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