Lesson 1 Regeneration Methods

1
Lesson 1 Regeneration Methods

• Forest Science I
• Unit 6 Reforestation
• Original by Jonathan H. Stribling
• December 3, 2001
• Modified by Georgia Agriculture Education
  Curriculum Office
• July 2004

2
Two Basic Types of Regeneration

• Natural
• Artificial

3
Natural Regeneration

• Advantages
• Low cost
• Less labor and equipment required
• Good early root development
• Minimal visual impact
• Less Soil erosion

4
Natural Regeneration

• Disadvantages
• Less Control of Spacing and Stocking
• Generally lower yield
• No genetic improvement
• No increased disease resistance
• Possible Pre-commercial thinning
• required

5
Methods of Natural Regeneration

• Seedtree
• Shelterwood

6
Seed Tree

• Most popular natural regeneration method
• Leave 6-8 (10) trees per acre to reseed
• Trees left need to be evenly distributed over
  area to be regenerated
• Disadvantage -- Often cannot get a logger to come
  back for such a light volume of wood

7
Shelter Wood

• Leaves more trees than seed tree (25-60)
• Must plan ahead
• Must control pioneer species in all regeneration
  methods (start 5 yrs or so before shelter wood
  cut.
• Careful selection in deciding which trees to
  leave

8
Artificial Reforestation

• Clearcut followed by either planting seedlings or
  direct seeding.

9
Artificial Reforestation

• Advantages
• Control of Spacing and Stocking
• Use of Genetically Improved Seedlings
• Disease Resistant Seedlings
• Allows for Change in Species

10
Artificial Reforestation

• Disadvantages
• Homogenous Stand More Susceptible
• Visually Displeasing to Some People
• Some political action groups rally
  against
  artificial methods of reforestation.

11
Clear Cutting

• Precedes planting seedlings or direct seeding
• Cuts basically all timber off property

12
Artificial Regeneration

• Planting Seedlings
• Hoedad
• Dibble
• Machine
• An experienced planter may plant 1000 seedlings
  per day manually!!!!!

13
Reforestation

• Method Chosen will primarily depend on landowner
  objectives!!