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This article in SSSAJ

  1. Vol. 24 No. 2, p. 79-81
    Received: Sept 8, 1959
    Accepted: Nov 24, 1959

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Use of Wax Substrates in Root Penetration Studies1

  1. Howard M. Taylor and
  2. Herbert R. Gardner2



Basic information on root penetration into pressure pans is essential in soil compaction studies. The ability of plant roots to penetrate compacted zones may determine moisture effectiveness and nutrient availability on these pressure-pan soils.

The use of wax substrates for simulated plastic pans is discussed and evaluated. Physical characteristics of a number of commercially available waxes are presented.

In plant growth-chamber experiments using wax substrates, the ability of plant roots to penetrate depended upon the wax rigidity, the type of plant, and the density of the soil above the substrate.

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