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Exchangeable Ions

Garrison Sposito

in The Chemistry of Soils

Published in print:
2016
Published Online:
November 2020
ISBN:
9780190630881
eISBN:
9780197559710
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780190630881.003.0013
Subject:
Chemistry, Environmental Chemistry

In Section 3.4, the cation exchange capacity, or CEC, of particulate soil humus is defined as the maximum number of moles of proton charge per kilogram that can be desorbed by a metal cation under ... More


Soil Salinity

Garrison Sposito

in The Chemistry of Soils

Published in print:
2016
Published Online:
November 2020
ISBN:
9780190630881
eISBN:
9780197559710
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780190630881.003.0016
Subject:
Chemistry, Environmental Chemistry

A soil is salineif the electrical conductivity of its soil solution as obtained by extraction from a water-saturated soil paste (ECe) exceeds 4 dS m-1. (The measurement of electrical conductivity ... More


Soil Acidity

Garrison Sposito

in The Chemistry of Soils

Published in print:
2016
Published Online:
November 2020
ISBN:
9780190630881
eISBN:
9780197559710
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780190630881.003.0015
Subject:
Chemistry, Environmental Chemistry

A soil is acidic if the pH value of the soil solution is less than 7.0. This condition is met in many soils where rainfall exceeds evapotranspiration, including Alfisols, Histosols, Inceptisols, ... More


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