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Physical Soil Amendments, Soil Compaction, Irrigation, and Wetting Agents in Turfgrass Management III. Effects on Oxygen Diffusion Rate and Root Growth 1
Author(s) -
Letey L.,
Morgan W. C.,
Richards S. J.,
Valoras N.
Publication year - 1966
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1966.00021962005800050024x
Subject(s) - irrigation , agronomy , peat , wetting , chemistry , amendment , soil compaction , diffusion , environmental science , soil water , soil science , materials science , biology , ecology , physics , political science , law , composite material , thermodynamics
The O.D.R. values under tensiometer guided irrigation were found to be high at the time measurements were made. Under the set irrigation program, the O.D.R. were lowest for unamended soil, next lowest for peat amended soil, and highest for soil amended with lignified redwood and calcined clay. Root growth in containers receiving water on a set schedule was associated with the measured O.D.R. A value of about 0.15 µg cm −2 min −1 appeared to be the lower limit for root growth. Each amendment promoted the development of a root system of unique characteristics.