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| DOI: | 10.2134/agronj2010.0242 |
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| Web URL(s): | https://dl.sciencesocieties.org/publications/aj/articles/103/1/38
Last checked: 06 28/2016
Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/aj/pdfs/103/1/38
Last checked: 06/29/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Woodward, Timothy R.;
Frame, W. Hunter;
Alley, M. M.;
Whitehurst, Garnett B.;
Whitehurst, Brooks M. |
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| Author Affiliation: | Woodward: Research Specialist; Frame: Graduate Research Assistant; Alley: W. G. Wysor Professor, Dep. of Crop and Soil Environmental Sciences, Virginia Polytechnic Inst. and State Univ., Blacksburg, VA; Garnett B. Whitehurst: Research Director; Brooks M. Whitehurst: President, Brooks Whitehurst Associates Inc., New Bern, NC |
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| Title: | Design and validation of a laboratory system for measurement of volatilized ammonia |
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| Section: | Nitrogen management
Other records with the "Nitrogen management" Section
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| Source: | Agronomy Journal. Vol. 103, No. 1, January 2011, p. 38-44. |
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| Publishing Information: | Madison, Wisconsin: American Society of Agronomy |
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| # of Pages: | 7 |
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| Related Web URL: | https://dl.sciencesocieties.org/publications/aj/abstracts/103/1/38
Last checked: 06/29/2016
Notes: Abstract only |
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| Keywords: | TIC Keywords: Ammonia; Ammonium chloride; Ammonium fertilizers; Comparisons; Control methods; Laboratory methods; Losses from soil systems; Nitrogen fertilizers; Volatility
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| Abstract/Contents: | "The design of laboratory systems for studying ammonia (NH3) released from fertilizers varies widely, and few designs have been tested to determine the accuracy and precision in measuring NH3 loss. A standard volatilization system design is needed for reliable and comparable studies of NH3 volatilization from N fertilizer. The objectives of this study are: (i) to describe the design of a system capable of controlling air flow rate and temperature for laboratory measurement of NH3 volatilized from N fertilizers; and (ii) assess the system's efficiency and variation in recovering NH3 lost from NH4Cl applied to an alkaline sand media. The system is comprised of individual chambers for soil and fertilizer, where temperature can be varied from room temperature to ~32°C; humidity is maintained near saturation, air flow rate can be varied, and acid traps are used to capture volatilized NH3 Two initial trials (I and II) were conducted at an N rate of 90 kg N ha-1 using air flow rates of 2.00 and 1.00 L min-1 and trapping acid volumes of 50 and 100 mL, respectively. A third trial was conducted at 30°C. A fourth trial (IV) was performed using a range of N application rates (25-250 kg N ha-1). The system recovered 89.3 to 97.1% of the N applied over all four trials and provided accurate and repeatable results under the conditions tested. Rapid, precise comparisons of NH3 volatilization losses from N fertilizers under laboratory conditions can be made with this system." |
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| Language: | English |
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| References: | 16 |
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| Note: | Equations
Figures
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Woodward, T. R., W. H. Frame, M. M. Alley, G. B. Whitehurst, and B. M. Whitehurst. 2011. Design and validation of a laboratory system for measurement of volatilized ammonia. Agron. J. 103(1):p. 38-44. |
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| DOI: 10.2134/agronj2010.0242 |
| Web URL(s):
https://dl.sciencesocieties.org/publications/aj/articles/103/1/38
Last checked: 06 28/2016
Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/aj/pdfs/103/1/38
Last checked: 06/29/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: b2212646a |
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