Full TGIF Record # 106302
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Web URL(s):https://archive.lib.msu.edu/tic/its/articles/2005jou1015.pdf
    Last checked: 09/29/2008
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Author(s):Woods, Micah S.; Ketterings, Quirine M.; Rossi, Frank S.
Author Affiliation:Woods and Rossi: Department of Horticulture, Cornell University, Ithaca, New York; Ketterings: Department of Crop and Soil Sciences, Cornell University, Ithaca, New York
Title:Measuring the effects of potassium application on calcium and magnesium availability in a calcareous sand
Section:Soil biology & chemistry & plant nutrition
Other records with the "Soil biology & chemistry & plant nutrition" Section
Meeting Info.:Llandudno, Wales, UK: July 10-15 2005
Source:International Turfgrass Society Research Journal. Vol. 10, No. 2, 2005, p. 1015-1020.
# of Pages:6
Publishing Information:Aberystywth, Ceredigion, UK: International Turfgrass Society
Keywords:TIC Keywords: Soil testing; Soil pH; Potassium; Calcium; Magnesium; Calcareous sands; Nutrient absorption enhancers; Cation exchange capacity; Application rates; Agrostis stolonifera; Sand-based root zones; Extraction
Cultivar Names:L-93
Abstract/Contents:"Potassium application can reduce soil and plant calcium and magnesium. However, for calcareous sands with a low cation exchange capacity and excess calcium and magnesium carbonates, the effects of potassium application on available calcium and magnesium are not known. Our objectives were to determine the effects of potassium application on calcium and magnesium concentrations in tissue, and to evaluate the ability of different soil tests to identify potassium-induced changes in extractable calcium and magnesium. We applied potassium at six rates (0, 1, 2, 3, 5, and 6 g m-2 14 d-1) during the 2002 and 2003 growing seasons to L-93 creeping bentgrass [Agrostis stolonifera var. palustris (Huds.) Farw.] grown in a calcareous sand rootzone. Calcium and magnesium were extracted from soil samples using three standard agronomic extraction methods (Mehlich 3, Morgan, 1 N ammonium acetate) and two experimental methods (0.01 M strontium chloride and 1:5 water). Tissue calcium and magnesium decreased in response to increasing potassium application. The experimental soil tests adjusted to the pH of the soil during the extraction process and detected a decrease in extractable calcium and magnesium, while the agronomic tests did not adjust to the pH of the soil and were unable to consistently detect a difference in calcium and magnesium availability. We conclude that, while changes in calcium and magnesium extracted from this calcareous sand are not always associated with concurrent changes in bentgrass tissue calcium or magnesium concentration, extraction methods which adjust to the pH of a calcareous sand appear more effective in assessing calcium and magnesium availability."
See Also:Reprinted as Chapter 3 in Nonacid Cation Bioavailability in Sand Rootzones, 2006 Ph.D. Dissertation by Micah Sharpe Woods, R=109838 R=109838
See Also:Other items relating to: Potassium
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Woods, M. S., Q. M. Ketterings, and F. S. Rossi. 2005. Measuring the effects of potassium application on calcium and magnesium availability in a calcareous sand. Int. Turfgrass Soc. Res. J. 10(2):p. 1015-1020.
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    Last checked: 09/29/2008
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MSU catalog number: SB 433 .I52 v. 10
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