SLIDE 1
Advanced Invasive Plant Management
Managing Japanese Barberry & Japanese Knotweed
Connecticut Invasive Plant Symposium October 4th, 2018
Christopher Polatin, M.S., CERP Polatin Ecological Services, LLC & Land Stewardship, Inc.
SLIDE 2 Ecological Restoration
Process of assisting the recovery of an ecosystem that has been degraded, damaged, or destroyed.
- Invasive plant management is considered as
- ne step in the ER process
- The native species displaced by the ip’s are
restored to the site after ip management is completed
- The secondary ecological effects of herbicides
- r other invasive eradication methods are
reduced to a minimum
SLIDE 3
Japanese Barberry
What’s a land manager to do?
SLIDE 4 Land Use History
Photo credit: Brian DeGasperis
SLIDE 5
SLIDE 6
4/30/2013
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SLIDE 8
SLIDE 9 Childs Road Information
Date # person days
(gallons) July 2016 9 108 (2% Rodeo; 0.5 non-ionic surfactant) July 2017 5 8 (Thinvert 8% Rodeo) September 2018 3 0.75 (Thinvert 8% Rodeo)
SLIDE 10
2017
SLIDE 11
2018
SLIDE 12
Regeneration
SLIDE 13 Upland IP Management
2011 2012 2013 2014
SLIDE 14 Japanese Knotweed
Early Development
- Brian P. Colleran and Katherine E. Goodall (2015) Extending the Timeframe for Rapid
Response and Best Management Practices of Flood-Dispersed Japanese Knotweed (Fallopia japonica). Invasive Plant Science and Management: April-June 2015, Vol. 8,
- No. 2, pp. 250-253.
- Brian P. Colleran and Katherine E. Goodall (2014) In Situ Growth and Rapid Response
Management of Flood-Dispersed Japanese Knotweed (Fallopia japonica). Invasive Plant Science and Management: January-March 2014, Vol. 7, No. 1, pp. 84-92.
SLIDE 15 Connecticut River Bank Stabilization, Gill, MA
SLIDE 16
Small Patches
SLIDE 17 Stem Injection
Stem injection with JK Injection System
SLIDE 18
Knotweed Superorganism
SLIDE 19
Knotweed Reduction Mid-June
SLIDE 20
Foliar Herbicide Application After JK flowers (Mid-August)
SLIDE 21
Results after Initial Treatment
SLIDE 22
Results after Follow-up #1 Treatment
SLIDE 23
Results after Follow-up #2 Treatment
SLIDE 24 Emerging Success IPM & ER
Fannie Stebbins Memorial Wildlife Refuge, Longmeadow, MA
SLIDE 25
SLIDE 26
IP Success Criteria
1. Year 1. Initial treatments (combination of mechanical and chemical) results in 90% control. 2. Year 2. The first follow-up treatment (targeted chemical) results in 95% control. 3. Year 3. The second follow-up (manual or targeted chemical) results in 99% control. 4. Annual Stewardship and Maintenance (primarily manual) maintains 99% control.
SLIDE 27
Revegetation
SLIDE 28 Seeding
processing, and storage
commercial seed sources
good seed to soil contact with light raking, rolling, or stomping
SLIDE 29 Smother Crops
Use of buckwheat cover crop to smother treated knotweed area. Oats seeded into woodland planting area.
SLIDE 30
Revegetation Methods: Cuttings
SLIDE 31 Revegetation: Shrubs
2015 2013
SLIDE 32 McLean Open Space, Belmont, MA
Knotweed treated with herbicide in 2007. Native shrubs planted in 2008. Photos taken in Spring 2009
Revegetation: Shrubs
SLIDE 33 McLean Open Space, Belmont, MA
SLIDE 34 Marble Works Park, Middlebury, VT
SLIDE 35 Marble Works Park, Middlebury, VT
SLIDE 36 Marble Works Park, Middlebury, VT
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