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An Evaluation of a Chemical Root Pruning Technique for Improving the Root System Morphology of Containerized Seedlings Item Info

Three western conifer species, Psuedotsuga menzesii var. glauca (Beissn.) Franco, Pinus ponderosa Laws. var. ponderosa, and Pinus monticola Dougl. were chemically root pruned with cupric carbonate (CuC03) during greenhouse production. The interior walls of four cubic inch styroblock and Ray Leach pine cell containers were coated with four concentrations of CuCOj in a latex paint carrier: 0 g CuC03/liter of paint, 30 g/liter, 100 g/liter, and 300 g/liter. Seedlings were potted after one growing season, initiating a standard root growth potential test (Duryea 1984). The number and length of new roots, greater than one cm in length, were measured and a surface area index was calculated. Seedling root systems increased in total surface area, especially in the upper segments of the root plug, as a result of chemical root pruning. Seedling height and caliper were unaffected by the cupric carbonate treatments during the production phase, and a latex paint carrier did not decrease seedling growth or alter the root system surface area of potted seedlings. Cupric carbonate concentrations needed to produce a maximum surface area index were determined with a multiple regression procedure.

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Title:
An Evaluation of a Chemical Root Pruning Technique for Improving the Root System Morphology of Containerized Seedlings
Creator:
Woollen, Richard L.
Date Created:
1986-12
Description:
Three western conifer species, Psuedotsuga menzesii var. glauca (Beissn.) Franco, Pinus ponderosa Laws. var. ponderosa, and Pinus monticola Dougl. were chemically root pruned with cupric carbonate (CuC03) during greenhouse production. The interior walls of four cubic inch styroblock and Ray Leach pine cell containers were coated with four concentrations of CuCOj in a latex paint carrier: 0 g CuC03/liter of paint, 30 g/liter, 100 g/liter, and 300 g/liter. Seedlings were potted after one growing season, initiating a standard root growth potential test (Duryea 1984). The number and length of new roots, greater than one cm in length, were measured and a surface area index was calculated. Seedling root systems increased in total surface area, especially in the upper segments of the root plug, as a result of chemical root pruning. Seedling height and caliper were unaffected by the cupric carbonate treatments during the production phase, and a latex paint carrier did not decrease seedling growth or alter the root system surface area of potted seedlings. Cupric carbonate concentrations needed to produce a maximum surface area index were determined with a multiple regression procedure.
Document Type:
Thesis
Library Call Number:
SD404.3.W66 1986
Subjects:
Douglas-fir pseudotsuga menziesii ponderosa pine pinus ponderosa western white pine pinus monticola containerized seedlings morphology chemical root pruning root morphology cupric carbonate West Hatter Creek silviculture
UIEF Unit:
West Hatter Creek
Location:
UIEF; West Hatter Creek
Latitude:
46.844328
Longitude:
-116.875834
Department:
Department of Forest Resources
Type:
text
Format:
application/pdf

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Preferred Citation:
"An Evaluation of a Chemical Root Pruning Technique for Improving the Root System Morphology of Containerized Seedlings", UIEF Research Exchange, University of Idaho Library Digital Collections, https://www.lib.uidaho.edu/digital/uief/items/uief_0074.html
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Rights:
In copyright, educational use permitted.
Standardized Rights:
http://rightsstatements.org/vocab/InC-EDU/1.0/
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