Prescribed burning has been used successfully to manipulate brush in second-growth ponderosa pine to increase desirable plants; to kill mature brush plants; to kill brush seedlings and deplete the amount of seeds in the soil; and, at the same time, to prepare a better seedbed for pine seedling germination.

The above reported studies are a part of a project conducted cooperatively by the University of California and the California Department of Fish and Game under Federal Aid in Wildlife Restoration Act Project 51-R.