Structural degradation of a prairie soil from long-term management

R. G. Darmody, L. D. Norton

Research output: Contribution to journalArticlepeer-review


The Morrow Plots at the University of Illinois contain three major maize-based crop rotations and a grass sod border area. Subplots within these plots have received variable rates of lime and NPK fertilizers. Aggregate size and stability decreased in the order: grass sod, maize-oat-clover, maize-soybean, and continuous maize. Soil organic carbon decreased similarly. It was concluded that crop rotation has had a profound effect on structural properties whereas fertilization has not. The type of crop residues appear to be important in maintaining stable soil structure. However, all management systems have had a deleterious effect on soil structural properties and carbon content relative to the undisturbed grass sod soil. -from Authors

Original languageEnglish (US)
Pages (from-to)641-649
Number of pages9
JournalUnknown Journal
StatePublished - Jan 1 1994
Externally publishedYes

ASJC Scopus subject areas

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)


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