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| Web URL(s): | https://dl.sciencesocieties.org/publications/aj/pdfs/96/5/1272
Last checked: 11/04/2016
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| Publication Type:
| Refereed |
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| Author(s): | Collins, Augusta;
Allinson, Derek W. |
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| Author Affiliation: | Department of Plant Science, University of Connecticut, Storrs, Connecticut |
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| Title: | Soil nitrate concentrations used to predict nitrogen sufficiency in relation to yield in perennial grasslands |
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| Section: | Nitrogen management
Other records with the "Nitrogen management" Section
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| Source: | Agronomy Journal. Vol. 96, No. 5, September/October 2004, p. 1272-1281. |
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| Publishing Information: | Madison, WI: American Society of Agronomy |
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| # of Pages: | 10 |
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| Keywords: | TIC Keywords: Nitrate nitrogen; Nitrogen; Yield response; Grasslands; Perennial grasses; Nitrogen fertilization; Application rates; Forage; Soil sampling; Ammonium
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| Abstract/Contents: | "A method of evaluating soil N present in a perennial grassland system could help determine the need for additional N and enable more accurate N fertilization recommendations. The purpose of this study was to establish a relationship between a critical level (CL) of soil nitrate N under perennial grassland and optimum yield in a three-harvest system. A range of fertilizer treatments from 0 to 613 kg ha-1 was applied across two growing seasons to mixed stands of perennial forage grasses at two sites in Connecticut. Soil samples were taken on a weekly basis, and soil ammonium N and nitrate N were measured. Nitrate N was correlated with relative yield for three harvests within each growing season, and CLs of nitrate were generated using Cate-Nelson, linear response plateau, and quadratic response plateau models. Ranges of critical nitrate levels during the first 2 wk of each cycle were established: 2.0 to 4.5 mg kg-1 for the first harvest, 4.0 to 9.8 mg kg-1 for the second harvest, and 2.0 to 11.0 mg kg-1 for the third harvest. These values could be used to evaluate the necessity of adding N to a perennial grassland system in a three-harvest rotation and aid in a more correct fertilization of perennial grasses by offering soil-specific N evaluations." |
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| Language: | English |
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| References: | 58 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Collins, A., and D. W. Allinson. 2004. Soil nitrate concentrations used to predict nitrogen sufficiency in relation to yield in perennial grasslands. Agron. J. 96(5):p. 1272-1281. |
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| Web URL(s):
https://dl.sciencesocieties.org/publications/aj/pdfs/96/5/1272
Last checked: 11/04/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: S 22 .A45 |
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