Tree Removal Methods Manual, Mechanized, and Chemical.

Tree Removal Methods

Manual, Mechanized, and Chemical

Manual Felling

• Not always practical if large numbers of trees must be removed

• Can damage residual trees

Brushsaw for small stems, brushChainsaw

Tree Girdling

• Double girdle 1 in. deep spaced ~ 6 in. apart

• Later winter, early spring during sap rise

• Diffuse porous species are poor candidates unless herbicide is used

Mechanized Felling

• Mechanized removal– Tracked feller buncher

• Rotating cab with hinged arm

• Steep, uneven terrain

– Hydrostatic feller buncher• Easily maneuverable

• Plantations

– 3-wheeled feller buncher• Lightweight

• Flat terrain

Mechanized Removal

• Brush Hog

– Small trees and brush

Herbicides

• Why herbicide?

– Effective kill of whole plant with no resprout potential

• Uses– Precommerical thinning

– Release treatments

– Improvement cutting

– Site preparation

– Control of invasive species

– Right-of-way maintenance

Herbicide Application Methods

• Cut surface treatments– Frill girdle (Hack and squirt)

– Stem injection

– Cut stump

• Bark, foliage, and soil treatments– Foliar spray

– Basal bark application

– Basal soil spray

Herbicide Types

• Amine formulations (water-based)

– Water used as “carrier”

– Foliar spray, cut surface• Herbicide label will specify mixture for given application and target species

– Common chemicals: • Glyphosate: Roundup, Accord

• Triclopyr: Garlon 3A

• Picloram: Tordon K, Pathway

• Imazapyr: Aresenal

• 2,4-D

Herbicide Types

• Ester formulations (oil-based)

– Basal oil, diesel, or kerosene used as “carrier”

– Cut surface, basal bark• Herbicide label will specify mixture for given application and target species

– Common chemicals: • Triclopyr: Garlon 4

Cut surface treatments

Bark, foliage, and soil treatments

Silvicultural Objectives and Chemical Control Methods

Tree Removal Methods Manual, Mechanized, and Chemical.

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Transcript of Tree Removal Methods Manual, Mechanized, and Chemical.