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| DOI: | 10.21273/JASHS.126.1.151 |
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| Web URL(s): | https://journals.ashs.org/jashs/view/journals/jashs/126/1/article-p151.xml?rskey=sSNH8E
Last checked: 11/15/2019
Requires: PDF Reader |
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| Publication Type:
| Refereed |
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| Author(s): | Bigelow, Cale A.;
Bowman, Daniel C.;
Cassel, D. Keith |
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| Author Affiliation: | Department of Crop Science, North Carolina State University, Raleigh, NC |
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| Title: | Nitrogen leaching in sand-based rootzones amended with inorganic soil amendments and sphagnum peat |
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| Source: | Journal of the American Society for Horticultural Science. Vol. 126, No. 1, January 2001, p. 151-156. |
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| Publishing Information: | Alexandria, VA: American Society for Horticultural Science |
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| # of Pages: | 6 |
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| Keywords: | TIC Keywords: Nitrogen; Leaching; Sand-based root zones; Sphagnum peat moss; Inorganic amendments; Golf greens; Golf courses; Sand-based golf greens; Clinoptilolite; Zeolites; Diatomaceous earth; Porous ceramics; Cation exchange capacity; Nitrates; Ammonia; Root zone mixture; Application rates; Soil depth; Particle size; Hydraulic conductivity; Bulk density; Porosity; Capillary porosity; Nitrogen fate; Nutrient retention
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| Abstract/Contents: | "Sand-based rootzones are specified for golf course putting greens because they resist compaction and maintain drainage, even under heavy traffic. Although sands provide favorable physical properties, nutrient retention is generally poor and soluble nutrients like nitrogen (N) are prone to leaching. Laboratory experiments were conducted to evaluate several inorganic soil amendments (clinoptilolite zeolite (CZ), diatomaceous earth, and two porous ceramics), which varied in cation exchange capacity (CEC), and sphagnum peat for their ability to limit N leaching. Columns (35 cm tall X 7.6 cm diameter) were filled with 30 cm of sand-amendment mixtures (8:2 v/v) and NH₄NO₃ was applied in solution at a N rate of 50 kg ha-1. Leaching was initiated immediately using 2.5 pore volumes of distilled water in a continuous pulse. Leachate was collected in 0.1 pore volume aliquots and analyzed for NH₄⁺-N and NO₃⁻-N. All amendments significantly decreased NH₄⁺ leaching from 27% to 88% which was directly proportional to the CEC of the amendments. By contrast, NO₃⁻ losses were consistently high, and no amendment effectively decreased loss compared to nonamended sand. Two amendments with the highest CEC's, CZ and a porous ceramic, were selected to further study the effects of amendment incorporation rate, depth, and incubation time on N leaching. Ammonium but not NO₃⁻ leaching was decreased with increasing amendment rate of both products. At 10% amendment (v/v) addition, only 17% to 33% of applied NH₃⁺ leached from the amended sands. Depth of amendment incorporation significantly affected NH₄⁺ leaching, with uniform distribution through the entire 30 cm tall column being more effective than placement within the upper 2.5 or 15 cm. Allowing the NH₄NO₃ to incubate for 12 or 24 hours following application generally did not affect the amount leached. These results suggest NH₄-N leaching is inversely related to CEC of the root-zone mixture and that uniform distribution of these CEC enhancing amendments in the root-zone mixtures reduced N leaching to a greater extent than nonuniform distribution." |
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| Language: | English |
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| References: | 27 |
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| Note: | Graphs
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Bigelow, C. A., D. C. Bowman, and D. K. Cassel. 2001. Nitrogen leaching in sand-based rootzones amended with inorganic soil amendments and sphagnum peat. J. Am. Soc. Hortic. Sci. 126(1):p. 151-156. |
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| DOI: 10.21273/JASHS.126.1.151 |
| Web URL(s):
https://journals.ashs.org/jashs/view/journals/jashs/126/1/article-p151.xml?rskey=sSNH8E
Last checked: 11/15/2019
Requires: PDF Reader |
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MSU catalog number: SB 1 .A46 |
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