Effects of thinning and fertilization on growth of upland oak stands in the Boston Mountains of Arkansas: 7-year results
| Authors: | David L. Graney |
| Year: | 1983 |
| Type: | Paper |
| Station: | Southern Research Station |
| Source: | Proceedings of the second biennial southern silvicultural research conference. Gen. Tech. Rep. SE-24. |
Abstract
A study of thinning and fertilization of 50-year-old northern red oak (Quercus rubra L.), black oak (Q. velutina Lam.), and white oak (Q. alba L.) was initiated in the Boston Mountains of Arkansas in the spring of 1975. Fertilizer applications of a nitrogen and phosphorous combination were broadcast at two levels to individual oaks that had received thinning or nonthinning treatments. Both levels of fertilization increased diameter growth of all oaks in thinned and nonthinned stands, and thinning further increased this response. Maximum response to fertilization occurred during the first and second years after treatment. Response continued through the fourth year for the lower level ofnitrogen and through the fifth year for the higher level. A significant diameter growth response to thinning occurred during the third growing season after treatment for red and black oaks and the fifth growing season for white oak.