Lecture 5 - Mechanical Treatments for Rangelands

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Last updated 8:35 PM on 3/2/26
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13 Terms

1
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Immediate results

Can be selective or broad

Soil disturbance may facilitate seeding efforts

May completely change vegetation

Often coupled with other types of treatments

EASY TO CARRY OUT

Advantages to Mechanical Control

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Generally High average

Cost

May be limited by terrain

Soil disturbance can be severe

May disturb cultural and archaeological sites

May require specialized equipment and training

Disadvantages to Mechanical Control

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Mechanical Control – Types

Individual Plant Treatment

Multiple Plant Treatment

Top Removal

Entire Plant Removal

<p>Individual Plant Treatment</p><p>Multiple Plant Treatment</p><p>Top Removal</p><p>Entire Plant Removal</p>
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When/Why to Select Mechanical Control (or ANY control!)

1. Management objectives

2. Target Species Characteristics

3. Secondary Species Characteristics

4. Topography/Terrain

5. Soil kind, depth, texture, etc

6. Site Potential

7. Follow-up!

8. Public/Interest Group Pressure

Cost, Goals, Results

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How to Treat Individual Plants:

Top-Killing

  • Hand Cutting/Chopping

  • Girdling

  • Power Mulching

Entire Plant Removal

  • Hand Grubbing

  • Power Grubbing


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Important Factors to Consider:

1.Does the plant resprout

2.What is the plant densit

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How to Treat Many Plants at Once

Top Killing

  • Bulldozing

  • Blading

  • Tree-dozing

  • Chaining/Cabling

  • Railing

  • Roller-chopping/Crushing

  • Shredding/Mowing

  • Harrowing

Entire Plant Removal

  • Plowing/Disking

  • Root Plowing

  • Root Raking


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______: Great for removing non-resprouting species

Must dig out root-ball on resprouting species

Small plants are often missed or require more time

Bulldozing/Blading

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________: Pull large anchor-chain between two tractors

Chain Modifications

  • Rails

  • Disks

  • Blades

  • Roller Balls

  • Weight Balls (for steep slopes)


Chaining/Cabling

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_________: “A” rail, Supp rail, Random rail

Railing

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Straight-blade

Spiral-blade; aerators/renovators

Land Imprinter

Roller-Chopper

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________: One-way disk

Brushland Plow

Moldboard Plow

Standard Disk Plow

Offset Disk Harrow

Root Plow / Root Rake

Plows & Disks for Rangeland Use

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<p>Treatment/Implement Tractor/dozer power required</p><ul><li><p>Various Chains 140-350 hp</p></li><li><p>Rootplows 170-400 hp</p></li><li><p>Regrowth Rootplows 140-170 hp</p></li><li><p>Offset Disks 70-350 hp</p></li><li><p>Shredders/Mowers 35-150 hp (pto)</p></li><li><p>Roller-Choppers 60-350</p></li><li><p>Land Imprinters similar to roller-choppers</p></li><li><p>Pipe Harrow 210-400 hp</p></li><li><p>BullHog-style Brush shredders 55-500 hp</p></li></ul><p></p>

Treatment/Implement Tractor/dozer power required

  • Various Chains 140-350 hp

  • Rootplows 170-400 hp

  • Regrowth Rootplows 140-170 hp

  • Offset Disks 70-350 hp

  • Shredders/Mowers 35-150 hp (pto)

  • Roller-Choppers 60-350

  • Land Imprinters similar to roller-choppers

  • Pipe Harrow 210-400 hp

  • BullHog-style Brush shredders 55-500 hp


Power (cost?) Requirements: