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Influence of Exchangeable Hydrogen and Calcium, and of Sodium, Potassium and Ammonium at Different Hydrogen Levels on Certain Physical Properties of Soils
Author(s) -
Martin J. P.,
Richards S. J.
Publication year - 1959
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/sssaj1959.03615995002300050010x
Subject(s) - soil water , potassium , conductivity , hydraulic conductivity , chemistry , bulk density , sodium , ammonium , compaction , moisture , cation exchange capacity , water content , inorganic chemistry , mineralogy , soil science , materials science , geology , geotechnical engineering , organic chemistry , composite material
These studies were undertaken to determine the influence of exchangeable Ca and H and of Na, K, and NH 4 at different H levels on the aggregation of < 50 µ particles and on water conductivity by a method involving compaction of the soil into the conductivity cylinders while moist. Variation of the exchangeable H of three soils from 0 to 85% and of the Ca from 5% to excess, exerted very little influence on aggregation, bulk density, hydraulic conductivity, or moisture retention at 1/10‐, 1/3‐, or 1‐bar suction. Increasing Na reduced aggregation and conductivity. Increasing exchangeable K or NH 4 only slightly reduced soil aggregation but greatly reduced water conductivity. Increasing exchangeable H increased the dispersing action of Na, K, and NH 4 .