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Home → Publications → National Nursery Proceedings → 1981 → Root Development Control Measures in Containers - Recent Findings

Root Development Control Measures in Containers - Recent Findings

Coating the inside surfaces of containers with cupric carbonate (CuCO3) caused roots of Ponderosa pine (Pinus ponderosa Laws.) to stop growth at the container wall. Higher order laterals then proliferated and were arrested. These roots resumed growth radially when the container was removed. Degree of root crowding had little influence on treatment effect. Indole butyric acid (IBA) worked also, but not as well as CuCO3. The CuCO3 treatment was complementary to mycorrhizal inoculation of the growing medium. Combination of the twotreatments resulted in bigger trees, more lateral roots, and more mycorrhizal infection than either treatment alone.


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Author(s): C. P. Patrick Reid, Richard W. Tinus, Stephen E. McDonald

Event: Proceedings of the Canadian Containerized Tree Seedling Symposium
1981 - Toronto, Ontario