Utilization of Hardwood Bark in Media for Growing Woody Ornamental Plants in Containers1

in Journal of the American Society for Horticultural Science
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  • 1 University of Illinois, Urbana-Champaign


Hardwood bark was used in combination with other materials as media for forsythia and juniper plants in containers with various growing procedures, bark sources, and fertility practices. Based on dry wt, the most rapid growth of forsythia was obtained in a bark and fine sand medium; whereas, the least growth was obtained in soil, peat, and perlite. However, pfitzer juniper plants under 2 different fertility regimes grew most rapidly in a bark, soil, and peat medium, slowest in a bark and torpedo #2 sand medium, and at an intermediate growth rate in soil, peat, and perlite. The standard mix (soil, peat, and perlite) was more acidic than the experimental mixes containing bark and sand. Chlorotic plants were more numerous in acidic mixes. Leaf tissue analyses from the plants grown in the peat amended bark and standard mix had higher Fe and Mn concn than plants grown in a bark-sand mix.

Contributor Notes

Received for publication August 2, 1971. This is a publication of the Illinois Agriculture Experiment Station, University of Illinois at Urbana-Champaign.

The authors are, respectively, Graduate Assistant, Professor, and Assistant Professor, Department of Horticulture.

The authors wish to thank the Paygro Division of Mead Paper Corporation of Dayton, Ohio for partial financial assistance.