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

Silvicultural Objectives and Chemical Control Methods

Silvicultural Objectives and Chemical Control Methods

Silvicultural Objectives and Chemical Control Methods

Silvicultural Objectives and Chemical Control Methods