Challenges To High Tunnel Growing

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The challenges that face a farmer growing in high tunnels.

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Challenges To High Tunnel Growing

  1. 1. Challenges to High Tunnel Growing <ul><li>Weeds </li></ul>Pests Disease
  2. 3. January 8, and yes, that’s a dandelion in bloom!
  3. 4. At this stage, they’re easy to handle
  4. 5. Unchecked, they can look like this..
  5. 7. Insects – Pests & Predators
  6. 8. Direct intervention Removing affected crops…great chicken feed! Help from predators
  7. 9. Lacewing
  8. 10. Lady Beetle
  9. 12. Direct intervention
  10. 13. Hornworm, dark phase
  11. 15. Braconid wasp
  12. 16. Diseases
  13. 17. Sclerotinia sclerotiorum
  14. 24. Strategies Biologicals – Coniothirium Minitans – Contans Biofumigation Solarization
  15. 25. Biofumigation Certain Brassica cover crops, as well as mustard seed meal, contain high concentrations of isothiocyanates (ITCs) – derived from the degradation of glucosinolates (what gives them the pungent taste). The seed meal is also a significant source of nitrogen and other nutrients. When incorporated into the soil ITCs act as an effective biofumigant, reducing populations of pathogenic fungal species (Sclerotium, Rhizoctonia, and Phytium), nematodes, weeds, and certain insect species. UT/TSU 2003 In addition, the residues add important organic matter for soil building.
  16. 26. Solarization Heat Moisture Time
  17. 29. 77 86 95 104 113 122 131 Soil temp. ( ℉)
  18. 30. Questions?

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