McCully, W. G., Bowmer, W. J., & Stubbendieck, J. L. (1970). Problems in Establishing or Maintaining Vegetation on Roadsides (Report No. 142-1). Texas Transportation Institute. Texas A&M University. https://rosap.ntl.bts.gov/view/dot/85243
McCully, Wayne G., William J. Bowmer, and James L. Stubbendieck. Problems in Establishing or Maintaining Vegetation on Roadsides. Report no. 142-1. Texas Transportation Institute. Texas A&M University, 1970. https://rosap.ntl.bts.gov/view/dot/85243.
McCully, Wayne G., et al. Problems in Establishing or Maintaining Vegetation on Roadsides. Texas Transportation Institute. Texas A&M University, 1970, Report no. 142-1, ROSA P. https://rosap.ntl.bts.gov/view/dot/85243.
Tests were installed during the period 1968-70 to investigate the modification of roadside soil materials restricted by physical or chemical characteristics limiting plant growth, to determine the utility of plant materials for roadside use, and to develop chemical treatments for controlling unwanted vegetation. A plasticity index (PI) value greater than 16 signifies a poor tendency toward granulation and other properties desirable in a plant growth medium. This physical condition can be modified in some, but not all, cases by admixing agricultural gypsum, certain cationic polymers and polyurethane.
McCully, W. G., Bowmer, W. J., & Stubbendieck, J. L. (1970). Problems in Establishing or Maintaining Vegetation on Roadsides (Report No. 142-1). Texas Transportation Institute. Texas A&M University. https://rosap.ntl.bts.gov/view/dot/85243
McCully, Wayne G., William J. Bowmer, and James L. Stubbendieck. Problems in Establishing or Maintaining Vegetation on Roadsides. Report no. 142-1. Texas Transportation Institute. Texas A&M University, 1970. https://rosap.ntl.bts.gov/view/dot/85243.
McCully, Wayne G., et al. Problems in Establishing or Maintaining Vegetation on Roadsides. Texas Transportation Institute. Texas A&M University, 1970, Report no. 142-1, ROSA P. https://rosap.ntl.bts.gov/view/dot/85243.
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