Oleoresin yields for slash pines from seven seed sources
Abstract
Tests were made of the oleoresin-yielding potential of Pinus eliottii elliottii from a number of geographic sources planted in Louisiana 200 miles west of the natural range of the species. Seed sources ranging from South Carolina to Florida and westward to Louisiana did not differ in oleoresin yield under microchipping, nor in viscosity and exudation pressure of the resin. Individual trees, by contrast, varied greatly, their productivity being correlated with diameter, length of live crown, ratio of crown length to total height of tree, and viscosity of resin.