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Microsite Effects on Oleoresin Exudation Pressure of Large Loblolly Pines
Author(s) -
Lorio Peter L.,
Hodges John D.
Publication year - 1968
Publication title -
ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.144
H-Index - 294
eISSN - 1939-9170
pISSN - 0012-9658
DOI - 10.2307/1934519
Subject(s) - microsite , oleoresin , loblolly pine , atmospheric pressure , ecology , botany , horticulture , environmental science , biology , pinus <genus> , chemistry , geology , seedling , oceanography
Daily average oleoresin exudation pressure (OEP) of 40—year—old loblolly pines was not significantly reduced until severe soil and atmospheric moisture stress occurred from mid—September to mid—October. Under these conditions OEP was reduced more in trees on flat, usually wet sites than in trees on low (0.3—0.6 m) mounds. This response is attributed to a deficient fine root system on flat sites.