Case Study Name (Landowner)

Pine Rider Regeneration Project (St. Louis Cty, MN)

Stand Information
State or Province: 
Minnesota
Nearest city or town: 
Duluth, MN
Landowner: 
St. Louis County
Cover-type: 
MN ECS Native Plant Community System: 
Plant community or habitat classification and growth stage: 
White pine with a red pine component -FDN 43
Forest Health Threats: 
Estimated year of stand origin: 
1907
Site Index: 
67
feet
Silviculture System: 
Brief silvicultural objective: 
Regenerate White and Red Pine
Soils: 
Well drained sandy loam
Overview

This project is for White and Red Pine regeneration by shelterwood.

Silviculture Objective(s)

This project is to regenerate the pine types in the stand by

  • partial harvest
  • site treatments:
    • Herbicide to control competition
    • Seedbed preparation by mechanical  scarification 
    • Control of browse damage to regeneration as needed
    • Final removal of over story when white pine regeneration is established.

Pre-treatment stand description and condition
Stand establishment and management history: 
  • Harvesting of White pine at the start of the 20th century left large stumps still evident on site. The existing white pine was likely a young understory released by the first harvest.
  • There was some red and white pine planted in part of the site in the 1950’s, not a large area (3+acres).
  • There are stumps that appear to be from cutting done in the 1970’s of primarily small sawtimber white pine. This stand had a medium incidence of white pine blister rust. At that time, nearly all cutting of white pine on county land was done to remove “dead top” pine. 
Silviculture Prescription

The site is to be harvested to remove a portion of the over story and most of the understory,  retaining a target of 60 ft2 basal area of predominantly white pine (77%) and red pine (23%). Post-harvest the site is to be treated to create a seed bed for natural seeding. Control of broadleaved competition species was planned to be done by the means of herbicides. The site will also be treated mechanically to create soil exposure, exact means to be determined later. 

What actually happened during the treatment

The original prescription noted the use of herbicide then a mechanical site prep but due to the minimal competition and relatively heavy over story we did not do a herbicide treatment but just trenched the site in fall 2016.  We will now hope for a good seed year for that stand and see what nature will produce. 

Other notes

The large diameter made it possible to leave a higher basal area in parts of the site and still allow for equipment use between trees. Some areas in the site exceeded the 60 BA target.

Photographs
Pine Rider site 1939 B&WPine Rider site 2013 colorPine Rider site hillshade imageryPine Rider site pre-treatmentJason Meyer of St Louis County Land and Minerals discussing the Pine Rider site pre-treatment during a September 2015 tourLooking into the treated area during a September 2015 tour
Keywords
Biography
Name: 
Bob Hedburg
Organization: 
St Louis County Land Department
St Louis County logo
Title: 
Retired
Phone Number: 
(218) 726-2606
Name: 
Troy Lindgren
Organization: 
St Louis County Land and Minerals
Address: 
Phone Number: 
(218) 625-3716