'Experimental studies were conducted in Southeast Texas by the Texas Forest Service from 1949 through 1958 to determine the place and practical use of prescribed burns 1/ for control of undesirable understory hardwoods invading pine-hardwood stands and slash pine plantations. Studies were made in two physiographic provinces, namely, the upper flatwoods and rolling hill sites, and upper coastal plain steep slopes exceeding 20 per cent gradient. Data are presented in this report to show the effect of three seasonal burns and two frequencies of burn in three common fuel types: well stocked pulpwood size pine-hardwood; cut over sawtimber size pine-hardwood; and pulpwood size slash pine plantations... The research described in this publication was initiated under the premise that prescribed burning in the pine-hardwood type was a justifiable calculated risk; would set back natural plant succession and leave the site in a condition favorable to regeneratiOn and dominance by sub-climax plants, such as pine; would be the most economical tool to control plant succession when used in even aged management; and would be acceptable to technicians and land managers if fire behavior, degree of control, and effectiveness could be predicted under certain conditions.'