New Bush Honeysuckle Control Options and Strategies MIPN... · 2015. 7. 30. · Bush Honeysuckle Control Options and Strategies Strategies Ron Rathfon, Extension Forester Zach Lowe,

Bush Honeysuckle Control Options and

Strategies

Bush Honeysuckle Control Options and

Strategies

Ron Rathfon, Extension Forester

Zach Lowe, Assistant Professor, Restoration Ecology

Ron Rathfon, Extension Forester

Zach Lowe, Assistant Professor, Restoration Ecology

Southern Indiana CWMA

Selecting Control Methods

• Suite of invasive species• Range of sizes of invasive trees and

shrubs• Numbers of plants or size of area

needing treatment• Operational environment • Availability of equipment, labor, and

money• Desire to prevent damage to native

vegetation

Selecting Control Methods

• No one treatment will do it all!• Integrated Vegetation Management (IVM)

Invasive Brush ControlPrevention• Maintain healthy forest• Integrate invasive mgt. with forest

mgt. plan

Invasive Brush Control

Early Detection• Learn to i.d.• 1-3 years walk or

ride property to monitor

Bush Honeysuckle Control

Rapid ResponseSearch & Destroy

MissionsHand pulling/grubbingSpot treatments

Woody Vegetation Control

Six Herbicide Delivery Methods

1. Cut Stump2. Basal Bark3. Injection4. Foliar5. Dormant Stem

Spray6. Soil

1. Cut Stump1. Cut Stump

Hand or Machine Cutting – No Herbicide

• Resprouting. • Treat in spring and

again late summer. • Avoid cutting in

winter as it encourages most vigorous resprouting

• Most effective with shade-growing shrubs.

• Labor intensive• Disturbance

Cut Stump

Rathfon & Ruble (2006) Purdue FNR and Vigo Co. Parks Dept. Research 2002/03:

• Cut stump treatments very effective for shrubs 8’ and taller.

• Tordon/Pathway and 20% Garlon 4 in oil carrier equally effective – 100%

• Some non-target species affected by Pathway – Tulip-poplar.

Cut Stump - PathwayCut Stump - Pathway

Lowe, Weeks, Holt, and Parker (2007) Cut Surface Invasive Brush

Control. Purdue Wildlife Area, March 2003

0102030405060708090

100

% C

ontr

ol

Control

100%

AX-IT

20% G

4

20% G

4+1%

S

20% G

4+3%

S

15%G4+

1%S

15%G4+

3%S

10% G

4+3%

S

BHSAO

Large scale and mechanized treatment options

Brown Brush Monitor

– Cuts up to 2 -3 inch stems

– Debris thrown from the cutting chamber

– Herbicide sprayed in a 2nd chamber and wiped across cut stump surfaces


SIPAC, April 2006Skid SteerCut up to 6 - 8” base dia.

Spray stumps with herbicide using backpack sprayer

Follow-up foliar


2. Basal Bark Spray2. Basal Bark Spray

General RecommendationsGeneral Recommendations

Basal Bark SprayBasal Bark Spray–– Shrubs >4Shrubs >4’’ talltall–– 20% 20% triclopyrtriclopyr ester (ester (GarlonGarlon 4) in oil carrier 4) in oil carrier –– 12 12 -- 18 inch band to root collar on all sides 18 inch band to root collar on all sides

(depending on size)(depending on size)•• Year roundYear round

–– Avoid when bark wet or frozenAvoid when bark wet or frozen–– Inconsistent results reportedInconsistent results reported

Basal Bark SprayBasal Bark Spray

• 6 Treatment application times/seasons

• 5 Herbicide rates/combinations

• 4 Oil diluents• 2 BHS sizes

Herbicide Treatments

00.10.20.30.40.50.60.70.80.9

1

Jul-04 Sep-04

Nov-04

Jan-05 Mar-05

May-05

Prop

ortio

n B

HS

Kill

ed

20% Garlon 41% Stalker20% G4 + 1% S3% Stalker15% G4 + 3% S

91.9oF 48.9oF

Herbicide x Oil Diluent Treatments

00.10.20.30.40.50.60.70.80.9

1

20%Garl

on 41%

Stalke

r20

%G4+1%

S3%

Stalke

r15

%G4+3%

S

Herbicide Treatments

Prop

ortio

n K

illed

DieselAX-ITJLB PlusArborchem

Lowe, Weeks, Holt, and Parker (2007) Basal Bark Invasive Brush

Control. Purdue Wildlife Area, March 2003

0102030405060708090

100

% C

ontr

ol

100%

Ax-i

t

20%Garl

on 4

20%G4+

1%S

20%G4+

3%S

15%G4+

1%S

15%G4+

3%S

10%G4+

3%S

BHSAOMFR

3. Injection3. Injection

K.M. Hartman and B.C. McCarthy 2004 Southern Ohio


Two Treatments for Bush Honeysuckle

1. Cut Stump painted with 50% glyphosate

2. EZ-Ject lance injection with 83.5% glyphosate

Native tree seedlings planted



Two Treatments for Bush Honeysuckle – applied March 1994

1. Cut Stump painted with 50% glyphosate

94% mortality2. EZ-Ject lance

injection with 83.5% glyphosate

95% mortality Brian McCarthy, Ohio University

4. Foliar4. Foliar

General RecommendationsBackpack Low Volume Foliar Herbicide

Application:• Shrubs up to 8’ tall• 1 - 2% Glyphosate (RoundUp,

Glypro, Accord) foliar.• 1 – 2% Triclopyr (Garlon 3A, Garlon

4) foliar. • May – Oct.• Thorough coverage, no runoff.

Asian Bush Honeysuckle

Growth Habits• Leafs out very

early before most native plants

• One of last plants to drop leaves in the fall (early to late Nov., central Indiana)

Bush Honeysuckle Control Using 3 Herbicide Treatments x 2

Timing Combinations

0

0.2

0.4

0.6

0.8

1

SprTric

loSprT

riclo+Im

az

SprGlyp

h

FalTric

loFalT

riclo+Im

az

FalGlyp

h

Prop

ortio

n

Mortality GT 50% Damage LT 50% Damage

aa

b

Mortality F=12.2, p=0.0002, =0.05a a a

4% G

arlon 3A

3% G

arlon 3A

1/8% Arse

nal

5% G

lypro

Plus

4% G

arlon 3A

3% G

arlon 3A

1/8% Arse

nal

4% G

lypro

Plus

4% GlyproPlus, Low Volume Backpack

Nov. 4, 2002 Terre Haute, IN

4% GlyproPlus, Low Volume Backpack

Nov. 4, 2002 Terre Haute, IN

4% Garlon 3A, Low Volume Backpack Nov. 4, 2002

Terre Haute, IN

4% Garlon 3A, Low Volume Backpack Nov. 4, 2002

Terre Haute, IN

Late Season High Volume Foliar Treatments

Southern Indiana– Herbicide– Herbicide

Rate– Application

Timing

Foliar Applied Herbicide Combinations for Bush Honeysuckle Control – November 2005, Dubois County

0.000.100.200.300.400.500.600.700.800.901.00

1% G

lypro

Plus2%

Glyp

roPlus

4% G

lypro

Plus0.1

25% A

rsenal

0.25%

Arse

nal0.5

% Ars

enal

1% G

lypro

Plus+0.1

25% A

r...

Prop

ortio

n K

illed

7-Nov14-Nov21-Nov

NO

TR

T

NO

TR

T

NO

TR

T

NO

TR

T

1% GlyproPlus, High Volume Nov. 8, 2005 Dubois Co.




• Log skidder or dozer mounted– RadiArc Sprayer

James H. Miller, USDA Forest Service

• Boomless sprayers

James H. Miller, USDA Forest Service

• Serious Weed Control

John D. Byrd, Mississippi State University


Brush hog/Hydroax/Kershaw

– Good for open areas

– More difficult in heavily stocked forest stands


• Lowe et al. (2007)– Brush hog/

Hydroax– Follow up with

foliar herbicide treatment.• Habitat + Krenite• Habitat + Krenite

+ Escort• Habitat + Accord

5. Dormant Stem Low VolumeLowe, Weeks, Holt, and Parker (2007)

Dormant Stem Low Volume Invasive Brush Control. Purdue Wildlife Area, March 2003– 4% Ax-it + 1.5% triclopyr (Garlon 4) +

0.25% nonionic surfactant + 0.125% imazapyr (Stalker) in water

– Applied March 2004– 100% control of BHS, AO, and MFR


Prescribed Fire• Fire adapted

communities• Spring burn

preferable to fall burn

• Lack of fuel in spring and under large BHS thickets

• Potential damage to overstory trees

• Follow up with foliar herbicide

Operational ApplicationOperational Application

• Use a combination of treatments • Follow up treatments• Use a combination of treatments • Follow up treatments

Southern Indiana CWMA

Documents

New Bush Honeysuckle Control Options and Strategies MIPN... · 2015. 7. 30. · Bush Honeysuckle Control Options and Strategies Strategies Ron Rathfon, Extension Forester Zach Lowe,