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Sesbania herbacea
AKA
• Sesbania• Coffee Bean• Coffee Weed• Colorado River Hemp• Tall Indigo• Formerly Sesbania
exaltata
• 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
Large distribution, primarily the southeastern states
Found in low-lying, wet areas, disturbed sites, road ditches, stream banks
Grows in a variety of soils, heavy clay to sandy
Grows best when soil temperatures are warm, optimal over 800 F
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
Control
• When is the population high enough to need control?
• Methods of control– Fertilizer– Mechanical– Water management– Herbicide
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
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
Mowing
• Mow before the plants produce seed
• Works best where the plants occurred in a narrow strip or isolated spot
Disking
• Disk prior to seed production
• Fits in well with regular moist soil management
Water Management
• Not an option for everyone• Dewater earlier, promote earlier germinating
plants• Competition is the best control
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
Herbicides
• Follow the label• Costs• Herbicides affect other plants• Don’t forget the surfactant or crop oil
• Glyphosate herbicides
• Broad spectrum herbicide
• Glyphosate resistance
• 2% Solution
• Low cost
• Very effective on Sesbania but equally effective on all broadleaf plants
• Drift potential
• Some states have specific restrictions
• ½ - 1 pint/acre
• 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
• 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