• Houston, Allan E.
  Agricultural Experiment Station, University of Tennessee, Ames Plantation, Grand Junction, TN
  
• Buckner, Edward R.
  Department of Forestry, Wildlife and Fisheries, University of Tennessee, Knoxville, TN
  

Green ash, sycamore, and sweetgum were established on abandoned agricultural bottomlands on the Ames Plantation with 150 pounds of elemental nitrogen and 35 pounds of elemental phosphorus per acre added at the beginning of the second growing season as a main treatment while disking and mowing were treated at the sub-plot level. After 5 years, height gains in disked plots versus control plots were 81 percent for green ash, 73 percent for sycamore, and 50 percent sweetgum. Height growth for green ash was 37 percent greater with fertilization alone; sycamore and sweetgum increased 29 and 15 percent respectively. Height growth was not affected significantly in mowing treatments. Gains in fertilizer treatments were confined primarily to the growing season following application.