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Soil Hardness Measurements in Relation to Soil Moisture Content and Porosity
Author(s) -
Jamison V. C.,
Weaver H. A.
Publication year - 1952
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/sssaj1952.03615995001600010005x
Subject(s) - loam , subsoil , penetrometer , water content , porosity , soil science , moisture , environmental science , pedotransfer function , soil morphology , field capacity , geology , topsoil , soil water , geotechnical engineering , soil type , hydraulic conductivity , materials science , composite material
A method of adjusting penetrometer measurements so as to express soil porosity conditions is presented. The best simple function giving high correlations with macroporosity in the Decatur clay and the sandy clay subsoil of Greenville fine sandy loam was log (ϑH 1/2 ) where ϑ was field moisture percentage and H the hammer blows required to cut a soil core. The hardness function can be used to estimate macroporosity and compares favorably with the latter in relationship to depth of rooting, growth, and height of cotton plants.