Precommercial thinning direct-seeded longleaf pine on a medium site

A medium longleaf site on the Palustris Experimental Forest, in Louisiana, was direct-seeded in 1961 and then thinned in 1969 using several different levels of thinning. This publication includes tree counts recorded in 1968 and 1969, before and after treatments. Also included are additional tree measurement data, collected in 1974 and then every five years until 2019, such as diameter at breast height for each tree as well as the tree or stand age. For a subset of trees, additional measurements such as height, height to base of live crown, crown class, bark thickness in two directions, and height of trees to 4 different outside bark diameters (2, 4, 6, and 8 inches) are also provided.
The original study was meant to be used in in conjunction with other studies on other sites for determining the best thinning method for dense direct-seeded longleaf pine stands.