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Terminal Elongation of Loblolly and Shortleaf Pine Seedlings under Soil Moisture Stress
Author(s) -
Stransky J. J.,
Wilson D. R.
Publication year - 1964
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/sssaj1964.03615995002800030041x
Subject(s) - wilting , water content , seedling , moisture stress , moisture , agronomy , environmental science , water stress , loblolly pine , spring (device) , soil water , elongation , horticulture , pinus <genus> , biology , chemistry , botany , geology , soil science , materials science , mechanical engineering , geotechnical engineering , organic chemistry , engineering , ultimate tensile strength , metallurgy
During the spring growth flush, height growth of potted seedlings was inhibited by soil moisture tensions not greater than 2 atm. and it stopped completely as tension increased to 3.5 atm. Incipient wilting of the young flush occurred near 5 atm. and all plants died at 15 atm. Leaf moisture content and corresponding leaf water deficit changed little before growth stopped. Water deficit was not a reliable indicator of the seedling's internal moisture regime once leaf moisture content fell from an initial 210% to below 105%.