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Kim Lewers, USDA-Agricultural Research Service Beltsville, Maryland

Discover the impact of UV and Infrared technology on strawberry yield in low tunnels. Learn about maximizing production, frost protection strategies, disease prevention, and extended growing seasons. Benefit from expert insights and contact researchers for more information.

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Kim Lewers, USDA-Agricultural Research Service Beltsville, Maryland

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  1. Kim Lewers, USDA-Agricultural Research Service Beltsville, Maryland

  2. ‘Earliglow’ ‘Allstar’ ‘Ovation’

  3. Israel - winter Brazil - summer

  4. First, let’s talk about yield.

  5. UV UV Near-Infrared Infrared Provided by ARS Beltsville scientists Dr. Craig Daughtry and technician Mr. Andrew Russ.

  6. ‘Seascape’ ‘Albion’ ‘Monterey’ ‘Portola’

  7. Total strawberry yield from low tunnels, late May to early December 2011 200-ft tunnels with 400 plants, 12-inch spacing 17,000 plants/A

  8. Total strawberry yield from low tunnels, late May to early December 2011 End of short-day season at our location this year, June 9

  9. *There are new misters now that cost more but would negate the cost of the pvc. Fall and Winter Production

  10. 70’s Air temperatures mid-November: Black = inside low-tunnels. Pink = open bed next to low-tunnels. 50’s ~34F Seconds of frost protection with misters under tunnels: 15-minute intervals 6minutes

  11. Strawberry yield (lbs. 200-ft low tunnel) each week Effect of anthracnose July August September

  12. Anthracnose fruit rot begins Anthracnose fruit rot severe and limits yield

  13. B1082

  14. B1540

  15. Fruit from tunnels. And NO FUNGICIDES! This is Botrytis fruit rot. We did NOT see Botrytis in the tunnel fruit, even after harvest.

  16. Provided by ARS Beltsville scientists Dr. Craig Daughtry and technician Mr. Andrew Russ.

  17. NO powdery mildew!

  18. Hoops: Every 4 feet 12 ft-long, 3/16 in stainless steel rods 2 ft from top of bed

  19. 4 mil thick x 12 ft wide clear plastic sheeting No holes

  20. Twine “Stoppers”

  21. Dropped the sides first of October

  22. 70’s Air temperatures mid-November: Black = inside low-tunnels. Pink = open bed next to low-tunnels. 50’s ~34F Seconds of frost protection with misters under tunnels: 15-minute intervals 6minutes

  23. UV Near-Infrared Infrared Provided by ARS Beltsville scientists Dr. Craig Daughtry and technician Mr. Andrew Russ.

  24. Extended season • Great quality fruit • No Botrytis • No birds, fox, or deer • Reduced water use • Longer-lasting beds • Fewer runners and weeds

  25. John Enns George Meyers Thank you! Want to visit? Kim.Lewers@ ARS.USDA.gov Office: 301-504-6768 Cell: 240-463-5654

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