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| Web URL(s): | https://archive.lib.msu.edu/tic/its/articles/2001jou548.pdf
Last checked: 09/29/2008
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| Publication Type:
| Refereed |
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| Author(s): | Li, D.;
Volterrani, M.;
Christians, N. E.;
Minner, D. D.;
Magni, S. |
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| Author Affiliation: | Li, Christians, Minner: Department of Horticulture, Iowa State University, Ames, IA; Volterrani, Magni: Dipartimento di Agronomia e Gestione dell'Agroecosistema, Università di Pisa, Pisa, Italy |
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| Title: | Freezing and thawing effects on sand-based media modified with soil amendments |
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| Section: | Soil physics
Other records with the "Soil physics" Section
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| Meeting Info.: | Toronto, Ontario, Canada: July 2001 |
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| Source: | International Turfgrass Society Research Journal. Vol. 9, No. Part 2, 2001, p. 548-552. |
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| Publishing Information: | Oakville, Ontario, Canada: International Turfgrass Society |
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| # of Pages: | 5 |
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| Keywords: | TIC Keywords: Freezing; Thawing; Sand; Soil amendments; Inorganic amendments; Bulk density; Hydraulic conductivity; Porous ceramics; Calcined diatomaceous earth; Zeolites; Pumice; Physical properties of soil
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| Abstract/Contents: | "Many inorganic amendments have been suggested for use in sand-based systems to increase nutrient and water-holding capacity, but little is known about their long-term effects on the physical properties of the media. The objectives of this study were to investigate the effects of freezing and thawing on the particle integrity, soil bulk density, and saturated hydraulic conductivity (Ksat) of sand-based media amended with predominantly inorganic materials and to measure the particle stability of these sand and inorganic amendment mixtures when subjected to compaction. The amendments included porous ceramic clay (PCC); calcined diatomaceous earth (CDE); zeolite clinoptilolite; zeolite chabasite; a polymer-coated clay with a kelp material incorporated on the exterior of the polymer coating (PC); lapillus; and pumice. A mixture of 85% sand and 15% (v/v) of the soil amendments was prepared in the laboratory. After 20 freeze/thaw cycles, sand amended with PC had a 7.6% decrease in bulk density from the compacted sample. The percentage/weight of the finest fraction that passed through to the 0.106 mm sieve to the bottom pan increased due to freeze/thaw cycles in zeolite clinoptilolite and lapillus treatments compared to the sand control. The fine particles increased from 0.3 and 3.4% to 0.9 and 4.4%, respectively, after freeze/thaw for sand amended with zeolite clinoptilolite and lapillus. After 20 cycles of freeze/thaw, Ksat values of sand amended with PCC and CDE were 25 and 33% higher than the control, respectively. Twenty freeze/thaw cycles resulted in 24.7 and 16.2 cm h-1 increases in Ksat of the sand amended with PC and CDE, respectively. The increases of Ksat by PC and CDE are likely due to their bulk density decreases." |
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| Language: | English |
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| References: | 15 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Li, D., M. Volterrani, N. E. Christians, D. D. Minner, and S. Magni. 2001. Freezing and thawing effects on sand-based media modified with soil amendments. Int. Turfgrass Soc. Res. J. 9(Part 2):p. 548-552. |
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| Web URL(s):
https://archive.lib.msu.edu/tic/its/articles/2001jou548.pdf
Last checked: 09/29/2008
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MSU catalog number: SB 433 .I52 v. 9 |
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