Effects of Fertilizer Applications on Two Generations of Slash Pine
1960
Mergen, Francois | Voigt, G. K.
A series of 37 plots was established on which three formulations of fertilizer were applied at five rates to two age-classes of slash pine growing in Florida. The fertilizer caused increases in the nutrient contents of needles and branches of the younger trees and of cones and seeds in the older trees. Basal-area growth was increased as much as 32% in the older trees. Fertilizer treatments had no significant effect on cone length but produced heavier seeds. When these seeds were germinated in the greenhouse, they produced larger more vigorous seedlings with higher contents of nitrogen, phosphorus and potassium than did seeds produced on control trees.
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