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http://dx.doi.org/10.7745/KJSSF.2011.44.6.998

Water Holding Capacity and Hydraulic Conductivity According to Compaction and Saturation Degree for Perlite amended with Ground Coir  

Kim, Gi-Rim (Dept. of Bioenvironmental Chem Coll of Agri and Life Sci. Chungnam National Univ.)
Woo, Hyun-Nyung (Dept. of Bioenvironmental Chem Coll of Agri and Life Sci. Chungnam National Univ.)
Kim, Hye-Jin (Dept. of Bioenvironmental Chem Coll of Agri and Life Sci. Chungnam National Univ.)
Park, Mi-Suk (Dept. of Bioenvironmental Chem Coll of Agri and Life Sci. Chungnam National Univ.)
Song, Jin-A (Dept. of Bioenvironmental Chem Coll of Agri and Life Sci. Chungnam National Univ.)
Song, Tae-Yong (Dept. of Bioenvironmental Chem Coll of Agri and Life Sci. Chungnam National Univ.)
Jang, Hyo-Ju (Dept. of Bioenvironmental Chem Coll of Agri and Life Sci. Chungnam National Univ.)
Chung, Doug-Young (Dept. of Bioenvironmental Chem Coll of Agri and Life Sci. Chungnam National Univ.)
Publication Information
Korean Journal of Soil Science and Fertilizer / v.44, no.6, 2011 , pp. 998-1003 More about this Journal
Abstract
This investigation was performed to determine the hydraulic conductivity coefficient and water holding capacity for a specified compaction forces which are the amount of mechanical energy applied to the porous granule (PG) volume. Most current specifications of minerals and perlite as growth media require to be compacted to a specified density, which in general is equivalent to a certain percentage of laboratory compaction. The water holding capacity of the saturated PG was very large at potential above -1 bar compared with perlite, but very little water remained below this value. The water holding capacity and hydraulic conductivity characteristics of graded PG amended with the ground coir less than 2 mm in diameter were also determined from pressure outflow data. The saturated hydraulic conductivity of the saturated and compacted PG was slightly lower by more than one tenth order of magnitude at equal matric potentials of perlite, but when expressed on the basis of equal water deficits, the conductivity of PG was higher at all but the smallest deficits than those of perlite.
Keywords
Perlite; Compaction; Water holding capacity; Hydraulic conductivity;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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