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This article in AJ

  1. Vol. 53 No. 5, p. 331-335
    Received: Jan 23, 1961

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Factors Affecting Seedling Emergence of Blackwell Switchgrass1

  1. E. B. Hudspeth and
  2. H. M. Taylor2



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.

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