Full TGIF Record # 62726
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Web URL(s):http://www.tandfonline.com/doi/abs/10.1300/J099v02n04_05#.UqnOO-KQO8E
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Publication Type:
i
Report
Author(s):McCoy, Edward L.; Stehouwer, Richard C.
Author Affiliation:McCoy: School of Natural Resources, Ohio State University, Wooster; Stehouwer: Department of Agronomy, Pennsylvania State University, University Park
Title:Water and nutrient retention properties of internally porous inorganic amendments in high sand content root zones
Source:Journal of Turfgrass Management. Vol. 2, No. 4, 1999, p. 49-69.
# of Pages:21
Publishing Information:Binghamton, NY: Food Products Press (Haworth Press)
Keywords:TIC Keywords: Soil water retention; Soil amendments; Root zone; Nutrient status improvement; Calcined clay; Diatomaceous earth; Sandy soils; Sand; Cation exchange capacity; Potassium; Calcium; Leaching; Hydraulic conductivity; Mathematical equations; Sand particle size; Sand texture; Porosity; Peat
Abstract/Contents:"Internally porous inorganic amendments (IPIA's) are thought to improve water and nutrient retention of root zones. This study examined the performance of three amendment materials, a calcined clay and two diatomaceous earth products when added to high sand root zone mixes. Water retention aspects focused on the capacity of these materials to retain water and the soil water pressure head where water within the internal pore space is released. Nutrient retention aspects focused on the root zone mix CEC, selectivity of K vs. Ca on exchange sites, and impact of these characteristics on nutrient leaching. All IPIA's retained water in the internal porosity, yet diatomaceous earth materials contained a larger proportion internally than calcined clay. The diatomaceous earth products also released water from the internal pore space at slightly less negative pressure heads than calcined clay. Yet, all IPIA's released water from the internal pore space at relatively low soil water suction. All IPIA's exhibited selectivity for K vs. Ca on exchange sites. Only the calcined clay contained sufficient CEC to translate this selectivity into a K retention response. Thus, mixes containing calcined clay showed the greatest delay in K elution from column leaching experiments."
Language:English
References:20
Note:Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
McCoy, E. L., and R. C. Stehouwer. 1999. Water and nutrient retention properties of internally porous inorganic amendments in high sand content root zones. J. Turfgrass Manage. 2(4):p. 49-69.
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http://www.tandfonline.com/doi/abs/10.1300/J099v02n04_05#.UqnOO-KQO8E
    Last checked: Item not verified
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
    Notes: Abstract and Guide page only
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MSU catalog number: SB 433 .J68
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