Modification of Ponderosa Pine Root Systems in Containers
Coating the inside surfaces of containers with cupric carbonate (CuCO3) caused roots of ponderosa pine (Pinus ponderosa Laws.) to stop growth when they contacted the container wall. Higher order laterals then proliferated and were arrested when they, in turn, encountered the container wall. These roots resumed growth radially when the container was removed. Indolebutryic acid (IBA) caused a similar, but not as dramatic effect as CuCO3.
Contributor Notes
2Rocky Mountain Forest and Range Experiment Station, Forest Service, United States Department of Agriculture, Flagstaff, AZ.
3Department of Forest and Wood Sciences, College of Forestry and Natural Resources, Colorado State University, Fort Collins, CO.