method for controlling buckthorn - society for ecological restoration 2011
DESCRIPTION
This presentation describes a novel way to control woody invasive plant species like buckthorn. It is especially suitable for small woodland owners and managers.TRANSCRIPT
1
The Tall Stump Control Method for Buckthorn
John LampeGreen Shoots, LLC
Saint Paul, MinnesotaApril 2, 2011
THIRD MIDWEST-GREAT LAKES SER CHAPTER MEETINGApril 1 to 3, 2011
University of Illinois Springfield
2
Biggest Problems for AverageSmall Woodland Owner
Daunted by the task
3
4
Daunted by Control Methods
5
Images from Buckthorn Control Guide Printed with Permission
6
Tall Stump MethodCan Help Average Woodland
Owner
7
Talk Outline
• Background on family-owned woodland
• Tall stump control method
• Potential advantages– Efficient– Effective – Environmentally sound
8
9
Family Property
• Washington County, Minnesota
• 12.5 acres
• Rolling hills and lakes
• Typical of woodlands in area
10
Family Property (con.)
Native Oak savanna
1900s Pasture; heavily eroded
1960s Red and scotch pine planted
1980s Overgrown pine & buckthorn
1990s Early buckthorn control
2000 to today Beginnings of management
11
Our Woodland still has lots of “warts.”
12
13
14
But we are making progress.
15
16
17
18
19
20
Girdled Aspen
21
Creates Nice Snag!
22
Three Phases of Tall Stump Control Method
• Preparation
• Cutting the tall stumps
• Treatment
23
First Phase - Preparation
Not out-of-the-ordinary:
• Our Forest Management Objectives:– Convert to oak savanna and woodlands– Enhance ecological diversity– Safety – prevent fire, etc.
24
Only go after the worst buckthorn.
25
Worst Buckthorn – Berries
• mature female– 4 seeds per berry– 400 to 1800 fruits– 1600 to 7200 seeds– Over 5 year period =
• 8,000 to 36,000 seeds
26
Ignore the Small Buckthorn!
• Too time consuming
• It’s not just about the buckthorn
27
2nd Phase
28
Traditional – 2nd Phase
• Pulling
• Girdling
• Foliar
• Basal Bark
• Cut Stump
• Frill (“cut and squirt”)
29
2nd phase of the tall stump method only involves
stump cutting
No Treatment Yet
30
2nd Phase of Tall Stump: Cutting
• Tools: lopper or hand saw
• Cut trunk high
• Cut big branches
• Leave tall stumps
31
Tall Stump
32
Tall Stumps Can be
Quite Tall!
33
3rd Phase of Tall Stump Method
34
3rd Phase: Treatment
• Tools: – Scraping tool– Herbicide applicator
• Frill Method
35
Scrape Bark
36
37
Apply Herbicide
38
39
40
41
3rd Phase: Treatment (con.)
• Winter – ideal time.
• Glyphosate (20% to 30% concentration).
• Control and treatment can be separated by months
42
43
Advantages of Tall Stump Treatment
Method
44
1st Advantage: Efficiency
45
Efficient: FewerTools
46
Efficient – Split Work Up
• Cutting Tall Stump – springtime
• Treatment – fall or winter
47
Efficient because:
If you have a delayed treatment. . .
48
• Growth will occur at the top
• And, it’s still easy to treat the tree
49
• But at least you don’t have a bush to deal with
50
2nd Advantage: Effectiveness
51
Cutting Phase in Spring
• After leaf out and flowering
• Weakens the buckthorn
52
Sap Flow - Spring
SINK
SINK
53
Cutting Removes Sink
Sink
54
Frill Mainlines Herbicide
• Frill “mainlines” herbicide into inner bark or phloem
55
56
57
Sap Is Falling
Herbicide Goesto the Roots
58
3rd Advantage: Better for Environment
• No soil disturbance
• Better target surface means less herbicide
• Uses glyphosate – relatively benign
59
Green Shoots
• John Lampe
• 651-245-4682 (cell)
• slide presentation on blog: http://invasiveplantnews.com
• Website: www.greenshootsonline.com