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| DOI: | 10.1097/SS.0b013e3181fadf3a |
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| Web URL(s): | http://ovidsp.ovid.com/ovidweb.cgi?T=JS&CSC=Y&NEWS=N&PAGE=fulltext&D=ovft&AN=00010694-201011000-00004&PDF=y
Last checked: 06/19/2017
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Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Wang, Huo-Yan;
Sun, Hai-Xia;
Zhou, Jian-Min;
Cheng, Wei;
Du, Chang-Wen;
Chen, Xiao-Qin |
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| Author Affiliation: | State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, P. R. China |
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| Title: | Evaluating plant-available potassium in different soils using a modified sodium tetraphenylboron method |
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| Source: | Soil Science. Vol. 175, No. 11, November 2010, p. 544-551. |
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| Publishing Information: | Baltimore, Maryland: Williams & Wilkins |
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| # of Pages: | 8 |
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| Related Web URL: | http://journals.lww.com/soilsci/Abstract/2010/11000/Evaluating_Plant_Available_Potassium_in_Different.4.aspx
Last checked: 10/04/2016
Access conditions: Item is within a limited-access website
Notes: Abstract only |
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| Keywords: | TIC Keywords: Evaluative methods; Lolium perenne; Potassium; Potassium uptake
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| Abstract/Contents: | "Finding a uniform method to evaluate plant-available potassium (K) in a variety of soils has been a challenge. In this study, the sodium tetraphenylboron (NaBPh4) method was modified and compared with the conventional ammonium acetate (NH4Ac) method to evaluate K availability to perennial ryegrass (Lolium perenne L.) in soils with different K fertilities. The amount of K extracted using NaBPh4 was influenced by extraction time and concentrations of NaCl and NaBPh4. Without NaCl, the NaBPh4 method with low concentrations of NaBPh4 (0.001 and 0.003 mol L-1) could only extract luble and exchangeable soil K, equivalent to three sequential extractions using the NH4OAc method, whereas the NaBPh4 method with a high NaBPh4 concentration (0.2 mol L-1) could extract all the NH4OAc-extractable K and some easily released nonexchangeable K (NEK) in soils. Easily released NEK contributed significantly to K uptake by ryegrass. Soil K availability estimated using the 60-min (r2 = 0.83-0.92) and 120-min (r2 = 0.84-0.94) modified NaBPh4 methods correlated well to the K removed by one to eight crops of ryegrass. The 60-min modified NaBPh4 method without NaCl (0.2 mol L-1 NaBPh4 + 0.01 mol L-1 EDTA) was suitable for evaluating K availability to plants in a variety of soils, whereas the NH4OAc method was only suitable for evaluating K availability in soils of the same type or with similar K-buffering capacities, but not in soils with variable K buffer capacities or in which the NEK contribution to plant K uptake varied." |
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| Language: | English |
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| References: | 35 |
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| Note: | Includes map, "[Soil sampling sites]", p. 545
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Wang, H., H. Sun, J. Zhou, W. Cheng, C. Du, and X. Chen. 2010. Evaluating plant-available potassium in different soils using a modified sodium tetraphenylboron method. Soil Science. 175(11):p. 544-551. |
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| DOI: 10.1097/SS.0b013e3181fadf3a |
| Web URL(s):
http://ovidsp.ovid.com/ovidweb.cgi?T=JS&CSC=Y&NEWS=N&PAGE=fulltext&D=ovft&AN=00010694-201011000-00004&PDF=y
Last checked: 06/19/2017
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: b2220467 |
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