Studies of the changes occurring in heated soils
Document Type: Journal Article
Author(s): S. U. Pickering
Publication Year: 1910

Cataloging Information

  • chemistry
  • fire resistant plants
  • germination
  • heat effects
  • ignition
  • manganese
  • nitrogen
  • organic matter
  • seed germination
  • seeds
  • soil moisture
  • soil temperature
  • soils
  • temperature
  • toxicity
  • water
Record Maintained By:
Record Last Modified: June 1, 2018
FRAMES Record Number: 35262
Tall Timbers Record Number: 9558
TTRS Location Status: In-file
TTRS Call Number: Fire File DDW
TTRS Abstract Status: Okay, Fair use, Reproduced by permission

This bibliographic record was either created or modified by the Tall Timbers Research Station and Land Conservancy and is provided without charge to promote research and education in Fire Ecology. The E.V. Komarek Fire Ecology Database is the intellectual property of the Tall Timbers Research Station and Land Conservancy.


In previous communications it has been shown that soils heated to temperatures from 60° to 150° exhibit an inhibitory effect on the germination of seeds, due to the presence of some toxic substance, which must be a soluble organic, and, probably, nitrogenous, body, for the extent to which germination is retarded is roughly proportional, to both the soluble organic matter and the soluble nitrogen present. That so-ca]led unheated soils, that is, soils which have not been heated above 20-30 degrees, contain some of this substance, was also probable from the fact that the results with unheated and heated soils all lie on continuous curves. It was shown, too, that treatment with antiseptics produced a chemical change in soils, closely similar to that produced by heating them to 60-75 degrees.

Pickering, S. U. 1910. Studies of the changes occurring in heated soils. Journal of Agricultural Science, v. 3, p. 258-276.