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Effects of Fertilizer Applications on Two Generations of Slash Pine
Author(s) -
Mergen Francois,
Voigt G. K.
Publication year - 1960
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1960.03615995002400050027x
Subject(s) - fertilizer , slash (logging) , slash pine , phosphorus , germination , nutrient , agronomy , greenhouse , basal area , potassium , biology , horticulture , environmental science , botany , chemistry , pinus <genus> , ecology , organic chemistry
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.