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The Use of Micro‐Aggregation or Dispersion Measurements for Following Changes in Soil Structure
Author(s) -
Kolodny L.,
Neal O. R.
Publication year - 1942
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1942.036159950006000c0014x
Subject(s) - service (business) , soil conservation , supervisor , library science , citation , agriculture , operations research , computer science , engineering , archaeology , history , political science , business , law , marketing
SOIL structure is defined most simply as the arrangement of the soil particles, and various direct and indirect methods (i, 3, 4, 5, 6) are used for its evaluation. Macroscopic and microscopic observations of the character and arrangement of the particles, the size of the aggregates, and the type of cementation may be classified as direct methods. These are, however, morphological. Among the laboratory methods, measurements of the stability and degree of aggregation may be classified as direct ( i) . The amount and distribution of pores in the soil and water permeability of the soil comprise the more important indirect methods. One of the most accurate of the direct laboratory technics is the determination of the degree of dispersion or micro-aggregation. Because of its relative accuracy, this method is an excellent means of following relative changes in structure. Since the microstructural units form the nuclei of the macro units, there is adequate justification for the use of this method in structure studies.