Full TGIF Record # 134090
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Web URL(s):http://img.kisti.re.kr/soc_img/society//tsk/JDHHBF/2006/v20n2/JDHHBF_2006_v20n2_223.pdf
    Last checked: 01/28/2013
    Requires: PDF Reader
Publication Type:
i
Refereed
Author(s):Christians, Nick; Joo, Young-Kyoo; Lee, Jeong-Ho
Author Affiliation:Christians: Department of Horticulture, Iowa State University, Ames, Iowa, USA; Joo and Lee: Department of Biological Resources and Technology, Yonsei University, Wonju, Korea
Title:Interpreting soil tests for turfgrass
Source:Korean Journal of Turfgrass Science. Vol. 20, No. 2, 2006, p. 223-235.
Publishing Information:Korea: Turfgrass Society of Korea
# of Pages:13
Keywords:TIC Keywords: Soil testing; Phosphorus; Potassium; Nutrient availability; Soil test values; Base saturation; Soil texture; Soil pH
Abstract/Contents:"Soil testing laboratories unfamiliar with turfgrasses will often overestimate the plant's need for phosphorus and underestimate the need for potassium. This is partly due to differences in rooting between grasses and many garden plants and crops. The grasses are generally more efficient in extracting phosphorus from the soil, reducing their need for phosphorus fertilizer. The fact that crop yield is often the primary objective in field crop production, and is usually of little interest in turfgrass management, may affect soil test interpretation for potassium. Potassium levels above those required for maximum tissue yield of grasses may improve stress tolerance and turfgrasses will usually benefit from higher applications of this element. There are also differences in soil testing philosophies. Some laboratories use the sufficiency level of available nutrients(SLAN) approach, whereas others prefer the basic cation saturation ratio(BSCR) approach. Some will use a combination of the two methods. The use of the BCSR theory easily lends itself to abuse and questionable fertilizer applications and products are sometimes recommended citing imbalances in cation ratios. The usefulness of the BCSR ratio theory of soil testing varies with soil texture and interpretations on tests performed on sand-bases media are particularly a problem. Other soil testing problems occurs when sand-based media used on sports fields and golf greens contain free calcium carbonate. The ammonium acetate extractant at pH 7.0 dissolves excessive amounts of calcium that can bias cation exchange capacity measurements and measurements of cation ratios. Adjusting the pH of the extractant to 8.1 can improve the accuracy of the testing procedure for calcareous media."
Language:English
References:25
Note:Abstract appears in English
Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Christians, N., Y.-K. Joo, and J.-H. Lee. 2006. Interpreting soil tests for turfgrass. (In English, with English abstract.) Korean Journal of Turfgrass Science. 20(2):p. 223-235.
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http://img.kisti.re.kr/soc_img/society//tsk/JDHHBF/2006/v20n2/JDHHBF_2006_v20n2_223.pdf
    Last checked: 01/28/2013
    Requires: PDF Reader
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