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Sesbania Herbacea

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Sesbania Herbacea

  1. 1. Sesbania herbacea
  2. 2. AKA• Sesbania• Coffee Bean• Coffee Weed• Colorado River Hemp• Tall Indigo• Formerly Sesbania exaltata
  3. 3. • 3’ – 10’ tall (much taller in SEMO)• Leaves 4”-12” with 20-70 leaflets• Yellow flowers ½”- ¾”• Slender seed pods 6” – 8” with numerous seeds• Noticeably pungent smell
  4. 4. Largedistribution, primarily thesoutheastern statesFound in low-lying, wetareas, disturbedsites, road ditches, streambanksGrows in a variety ofsoils, heavy clay to sandyGrows best when soiltemperatures arewarm, optimal over 800 F
  5. 5. Indian Jointvetch• Aeschynomene indica• Commonly mistaken for Sesbania• Grow in similar habitats and conditions• Shorter plant• More leaflets• Leaflets become shorter at the end of the leaf causing a pointed shape to leaf• Darker green color• Less pungent smell
  6. 6. Control• When is the population high enough to need control?• Methods of control – Fertilizer – Mechanical – Water management – Herbicide
  7. 7. Fertilizer• Nitrogen, granular urea 46-0-0• Why does this work? Competition or direct impact on the sesbania plant• When to apply• Application rates• Pilot study on Ten Mile Pond CA
  8. 8. Pilot study at Ten Mile Pond CA• University of Missouri Extension• Four test plots for sampling• Each plot was treated with different rates of nitrogen; 0#/acre, 25#/area, 50#/acre, 100#/acre• Numerical but not statistical difference in the number of sesbania plants
  9. 9. Mowing• Mow before the plants produce seed• Works best where the plants occurred in a narrow strip or isolated spot
  10. 10. Disking• Disk prior to seed production• Fits in well with regular moist soil management
  11. 11. Water Management• Not an option for everyone• Dewater earlier, promote earlier germinating plants• Competition is the best control
  12. 12. Deep Soil Disturbance• This works with a new population of plants• Seeds are still viable for 5+ years• Works great in some places, disaster in others
  13. 13. Herbicides• Follow the label• Costs• Herbicides affect other plants• Don’t forget the surfactant or crop oil
  14. 14. • Glyphosate herbicides• Broad spectrum herbicide• Glyphosate resistance• 2% Solution
  15. 15. • Low cost• Very effective on Sesbania but equally effective on all broadleaf plants• Drift potential• Some states have specific restrictions• ½ - 1 pint/acre
  16. 16. • Good herbicide for moist soil management where 2,4-D is not an option• Not as cheap• It is labeled to control smartweed but the smartweed recovers• Use prior to sesbania bloom• Full rate 1 ½ pints/acre because of plant height• Work well with crop oil 1-2 pints/acre• Not effective on jointvetch
  17. 17. • Combination for spraying adjacent to water bodies• Surfactant is important• Order of mixing is important• Sesbania is not listed on the Garlon 3A label, however it works• Rodeo; 1 ½ - 2% solution• Garlon; 2-2 ½ pts/acre

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