Sericea Lespedeza(Lespedeza cuneata L.)
Sericea Lespedeza      • Perennial legume native to eastern        Asia      • Introduced into the U. S. in the late      ...
Sericea Lespedeza                        Description• Grows to height of 2-4 feet• Stems are hairy   – Parallel lines of d...
Sericea Lespedeza    Distribution
Sericea Lespedeza      Habits          • Nitrogen fixer          • Drought and flood tolerant          • High tannin level...
Sericea Lespedeza          Seed• Prolific seed producer   – Can produce 600 -1,000     seed per plant   – 600 – 1,000 lbs ...
Sericea Lespedeza                          Seed• 90% of the seed produced  dies from competition in  infested stands   – A...
Sericea Lespedeza                              Control - Chemical• Chemical control is the most effective   – Triclopyr (R...
Sericea Lespedeza                           Control -Chemical• 2,4-D does not work   – “Burns” plant, but will not kill it...
Sericea Lespedeza                     Control –Burning• Burning is not effective at eradicating  – Spring burns will stimu...
Sericea Lespedeza                      Control – Other• Goats will forage on serciea  lespedeza  – They will also forage o...
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Sericea lespedeza

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Presentation on the invasive Sericea Lespedeza.

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Sericea lespedeza

  1. 1. Sericea Lespedeza(Lespedeza cuneata L.)
  2. 2. Sericea Lespedeza • Perennial legume native to eastern Asia • Introduced into the U. S. in the late 1890’s as a potential forage species • Used through the 1930’s – 1960’s for erosion control and wildlife cover/food • Declared a noxious weed in Kansas, spreading and becoming more problematic in many other states
  3. 3. Sericea Lespedeza Description• Grows to height of 2-4 feet• Stems are hairy – Parallel lines of dense white hairs• Trifoliate leaf – Green on top – light grey- green on bottom• Purple pea-like flowers in July – Oct.• Seed is yellow to red- orange in color
  4. 4. Sericea Lespedeza Distribution
  5. 5. Sericea Lespedeza Habits • Nitrogen fixer • Drought and flood tolerant • High tannin levels make it unpalatable to cattle • Planted in the Southeast still as forage and wildlife legume • Prefers full sun, but can tolerate shaded conditions • Allelopathic: Sericea lespedeza residues reduced the germination, emergence, and biomass of rye and tall fescue (Kalburtji and Mosjidis 1993)
  6. 6. Sericea Lespedeza Seed• Prolific seed producer – Can produce 600 -1,000 seed per plant – 600 – 1,000 lbs seed/acre• Seed can remain viable for years – Some studies suggest up to 20 years in the soil• Flowers July – Oct.• Seed dispersed throughout the fall
  7. 7. Sericea Lespedeza Seed• 90% of the seed produced dies from competition in infested stands – Adult plants shade and suppress seedlings• Seed can build up to a substantial level in the seed bank• Readily germinates when competition is removed – Intensive management can reduce seed bank
  8. 8. Sericea Lespedeza Control - Chemical• Chemical control is the most effective – Triclopyr (Remedy, Garlon 4, Redeem) – Fluroxypr (Pasturegard) – Metsulfron (Escort, Ally, Cimarron) • Triclopyr and Fluroxypr seem to be most effective before flowering (May –July) • Metsulfron more effective after flowering (Aug. – Sept.) – Slow kill (several weeks to asses effectiveness) Altom et al. 1992; Koger et al. 2002; Ohlenbusch et al. 2001• Chemical control can be effective (95% kill on exisiting plants)• Must treat areas for multiple years – At least 3 years, most like more for eradication
  9. 9. Sericea Lespedeza Control -Chemical• 2,4-D does not work – “Burns” plant, but will not kill it• Dicamba and Tordon are not effective• Chemical treatments will kill non-targeted forbs – Spot treatments reduce collateral damage to other forbs • Early detection and control are essential• Multiple broadcast treatments are most effective IF there is no concern about non-targeted forb species
  10. 10. Sericea Lespedeza Control –Burning• Burning is not effective at eradicating – Spring burns will stimulate germination and growth • Can use in conjunction with herbicide treatment to control – Summer burns may be used to control seed development and control spread
  11. 11. Sericea Lespedeza Control – Other• Goats will forage on serciea lespedeza – They will also forage on all other broadleaves • Mowing can be used to control seed production in the fall, but will not impact existing plants
  12. 12. Questions?

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