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Response of Semimature Slash and Loblolly Pine Plantations to Fertilization with Nitrogen and Phosphorus
Author(s) -
Fisher R. F.,
Garbett W. S.
Publication year - 1980
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/sssaj1980.03615995004400040039x
Subject(s) - slash pine , loblolly pine , pinus <genus> , human fertilization , slash (logging) , soil water , phosphorus , agronomy , coastal plain , environmental science , nitrogen , nutrient , forestry , botany , biology , chemistry , ecology , soil science , geography , organic chemistry
Field trials to measure the response of semimature slash pine ( Pinus elliottii var. elliottii Engelm. ) and loblolly pine ( Pinus taeda L.) in the southeastern U. S. lower coastal plain were established between 1968 and 1970 at 32 locations. Treatments consisted of N at 0, 55, 110, and 220 kg/ha, and P at 0 and 55 kg/ha in a complete factorial arrangement. Grouping sites on the basis of soil drainage class and depth to and nature of the B horizon served as an efficient way to interpret response to fertilization. After 8 years stands on most soils exhibited moderate to large volume gains when fertilized with N and P. Stands on wet soils with clay near the surface responded favorably to the addition of P alone.