Full TGIF Record # 68364
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Web URL(s):http://www.tandfonline.com/doi/pdf/10.1080/00103629909370371
    Last checked: 10/13/2015
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Publication Type:
i
Report
Author(s):Collins, Augusta; Allinson, Derek W.
Author Affiliation:Department of Plant Science, University of Connecticut, Storrs, Connecticut
Title:Use of anion exchange membranes to assess nitrogen needs of perennial grasslands
Source:Communications in Soil Science and Plant Analysis. Vol. 30, No. 15/16, 1999, p. 2267-2282.
# of Pages:16
Publishing Information:New York, NY: Marcel Dekker
Keywords:TIC Keywords: Grasslands; Anions; Nitrogen; Nitrogen fertility; Measurement; Hay; Nitrogen uptake; Fertilization rates; Nitrogen fertilization; Phalaris arundinacea; Festuca arundinacea; Anion exchange resin
Abstract/Contents:"Anion exchange membranes (AEMs) have recently become available and have proven effective in measuring phosphorus present in soils as well as nitrate (NO₃⁻) under both cultivated and grassland field conditions. We have attempted to assess the ability of AEM strips to measure NO₃⁻ present under a perennial grassland harvested for hay three times during the growing season. In all cases, we found significant quadratic relationships between nitrogen (N) applied and NO₃⁻ desorbed from the AEM strips. Using both linear-response-and-plateau (LRP) and quadratic-plateau (QP) models, we found highly significant relationships to relative yield and the ability to predict a critical level (CL) of NO₃⁻-N necessary to reach maximum yield during two harvest periods. The AEM strips provided a good correlation between NO₃⁻ and N rate, and between NO₃^D- and yield. Critical levels at which subsequent N would need to be applied in order to achieve maximum yield were identified. These need to be further field-tested for consistency under differing environmental conditions."
Language:English
References:29
Note:Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Collins, A., and D. W. Allinson. 1999. Use of anion exchange membranes to assess nitrogen needs of perennial grasslands. Commun. Soil. Sci. Plant Anal. 30(15/16):p. 2267-2282.
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Web URL(s):
http://www.tandfonline.com/doi/pdf/10.1080/00103629909370371
    Last checked: 10/13/2015
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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MSU catalog number: S 590 .C54
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