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Factors Affecting Seedling Emergence of Blackwell Switchgrass 1
Author(s) -
Hudspeth E. B.,
Taylor H. M.
Publication year - 1961
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1961.00021962005300050020x
Subject(s) - seedling , agronomy , soil compaction , environmental science , compaction , moisture , panicum virgatum , water content , soil water , soil science , chemistry , biology , geology , biofuel , bioenergy , geotechnical engineering , ecology , organic chemistry
Synopsis Switchgrass seedlings emerged from 3 ¼ inch depth of loose soil. However, when compaction pressure or surface slaking caused drying soil to develop considerable rigidity, emergence was hindered. With static medium to high available‐moisture levels, pressures of 1 psi on loose soil caused significantly greater emergence than no pressure. Greatest emergence through a depth of ½ inch of loose soil occurred at about ⅓ atmosphere soil moisture tension.