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DNA’s

DNA’s. Inhibit mitosis– primarily in the roots Differences in water solubility Surflan 2.5 ppm Pendulum 0.5 ppm Barricade 0.013 ppm. Paraquat / Gramoxone SL. Fast acting contact foliar Restricted use Highly toxic if swallowed. Gallery T&V. Disrupts root and hypocotyl development

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DNA’s

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  1. DNA’s • Inhibit mitosis– primarily in the roots • Differences in water solubility • Surflan 2.5 ppm • Pendulum 0.5 ppm • Barricade 0.013 ppm

  2. Paraquat / Gramoxone SL • Fast acting contact foliar • Restricted use • Highly toxic if swallowed

  3. Gallery T&V • Disrupts root and hypocotyl development • Water solubility 1 ppm • Broadleaf killer only

  4. Kerb SC • Inhibits mitosis– little foliar uptake • Restricted use • Water solubility 15 ppm

  5. Plant Hormone Mimics • 2, 4– D • Garlon 3A • Stinger

  6. Garlon 3A • Directed spray applications • Dougs more susceptible to damage than true firs • Is one of the components of Crossbow

  7. SpottedCatsear

  8. Stinger • Do not apply to first year transplants • Can apply over the top • Good on Canada thistle, clovers

  9. Canada Thistle

  10. Goal 2XL • Contact activity with wide rate range • Water solubility 0.1 ppm • Good tank mix partner • Goaltender

  11. Sureguard WDG • Same mode of action as Goal 2XL • Weed spectrum may be bigger • Good residual • 8 to 12 ounces per acre

  12. Glyphosate Products • Roundup Weather Max, Roundup Powermax ,Accord Concentrate • Razor, Glyphomax, Buccaneer, Mirage, Glystar………………and on and on……

  13. Asulox • Inhibits mitosis • Foliar activity • Used for Bracken fern control

  14. Horsetail

  15. Axiom DF • 24(c) label • Water solubility 56 ppm • Interferes with meristematic tissue • Needs a tank mix partner

  16. Westar • Premix of Oust and Velpar DF • Supplemental label for OR & WA • OK on new seedlings after one rain

  17. Westar results

  18. Problem Weeds • Bracken fern • Glyphosate 2% • Asulox • Wild carrot or Queen Anne’s Lace • Cultivation • Mowing • Westar, Sureguard

  19. Problem Weeds • Fine Fescues • moderate control with glyphosate • 2%, spray to wet • Better pre-emergent control with Pendulum or Axiom • Woody species • Garlon 3A on Scotch broom and Himalayan or Evergreen blackberries (use glyphosate on trailing BB)

  20. Problem Weeds • Woody Species • Glyphosate on deciduous brush • 1.5-2 % with 0.5% non-ionic surfactant, spray fully leafed out foliage to wet • Poison oak - 2% glyphosate on glossy, green leaves mid summer • Red Alder - both Garlon 3A and glyphosate are effective • Cottonwood - Garlon 3A

  21. Problem Weeds • Field bindweed • glyphosate or Garlon 3A • burns back temporarily • Others Weeds of concern?

  22. ANY QUESTIONS?

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