Ammonia sources in agriculture and their measurement

McGinn, S. M.; Janzen, H. H.

doi:10.4141/s96-059

Cited by 76 publications

(47 citation statements)

References 70 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Various techniques and methodologies have been established to quantify NH 3 losses from field systems Sommer et al 1995;van der Weerden et al 1996;McGinn and Janzen 1998;Loubet et al 1999;Rochette et al 2001). A large percentage of the studies, however, have been conducted in laboratory settings.…”

mentioning

confidence: 99%

Comparison of three simple field methods for ammonia volatilization from manure

Smith¹,

Gordon²,

Bourque³

et al. 2007

Can. J. Soil. Sci.

View full text Add to dashboard Cite

. 2007. Comparison of three simple field methods for ammonia volatilization from manure. Can. J. Soil Sci. 87: 469-477. Land application of swine manure can result in a loss of nitrogen (N) through ammonia (NH 3 ) volatilization. Accurate NH 3 loss assessments are essential to support the development of regional and global emission factors and identify best management strategies for reducing losses. The objectives of this study were to simultaneously assess the reliability and applicability of three simple NH 3 flux measurement techniques and their effectiveness and usefulness for the measurement of emissions from surface-applied swine manure. Ammonia losses from two chamber systems were compared: (i) static and (ii) wind tunnel chamber, as well as the (iii) micrometeorological theoretical profile shape (TPS) method. A series of field tests were performed at the Agriculture and Agri-Food Canada (AAFC) Research Farm in Harrington, Prince Edward Island (PE) on a sandy loam, stubble field that was surface applied with 100 kg NH 4 -N ha -1 of liquid swine manure. After application the three NH 3 emission techniques were established and measurements were performed over a 5-d period. Ammonia losses from the wind tunnels were comparable with those from the TPS method. The static chambers were found to underestimate NH 3 emissions (by ~95-99%), compared with both the wind tunnel and TPS methods. It is therefore recommended that either the TPS or wind tunnel approaches be used to more accurately quantify NH 3 losses for field systems.

show abstract

mentioning

confidence: 99%

Comparison of three simple field methods for ammonia volatilization from manure

Smith¹,

Gordon²,

Bourque³

et al. 2007

Can. J. Soil. Sci.

View full text Add to dashboard Cite

show abstract

“…Cape Hallett is situated at the southern end of Moubray Bay, northern Victoria Land, The most recent estimate of the colony size is 39 000 breeding pairs, recorded in the breeding season 1998-1999(Landcare Research, 2000. In addition to the breeding pairs, the colony also contains non-breeding adults and chicks.…”

Section: Colony Locationmentioning

confidence: 99%

The application of inverse-dispersion and gradient methods to estimate ammonia emissions from a penguin colony

Theobald

Crittenden

Tang

et al. 2013

Atmospheric Environment

View full text Add to dashboard Cite

Contact CEH NORA team at noraceh@ceh.ac.ukThe NERC and CEH trademarks and logos ('the Trademarks') are registered trademarks of NERC in the UK and other countries, and may not be used without the prior written consent of the Trademark owner. 1The application of inverse-dispersion and gradient methods to estimate ammonia emissions from a penguin colony AbstractPenguin colonies represent some of the most concentrated sources of ammonia emissions to the atmosphere in the world. The ammonia emitted into the atmosphere can have a large influence on the nitrogen cycling of ecosystems near the colonies. However, despite the ecological importance of the emissions, no measurements of ammonia emissions from penguin colonies have been made. The objective of this work was to determine the ammonia emission rate of a penguin colony using inversedispersion modelling and gradient methods. We measured meteorological variables and mean atmospheric concentrations of ammonia at seven locations near a colony of Adélie penguins in Antarctica to provide input data for inverse-dispersion modelling. Three different atmospheric dispersion models (ADMS, LADD and a Lagrangian stochastic model) were used to provide a robust emission estimate. The Lagrangian stochastic model was applied both in 'forwards' and 'backwards' mode to compare the difference between the two approaches. In addition, the aerodynamic gradient method was applied using vertical profiles of mean ammonia concentrations measured near the centre of the colony. The emission estimates derived from the simulations of the three dispersion models and the aerodynamic gradient method agreed quite well, giving a mean emission of 1.1 g ammonia per breeding pair per day (95% confidence interval: 0.4-2.5 g ammonia per breeding pair per day). This emission rate represents a volatilisation of 1.9% of the estimated nitrogen excretion of the penguins, which agrees well with that estimated from a temperature-dependent bioenergetics model. We found that, in this study, the Lagrangian stochastic model seemed to give more reliable emission estimates in 'forwards' mode than in 'backwards' mode due to the assumptions made.

show abstract

“…A disposição da espuma interfere na troca de ar do interior do coletor com a atmosfera. Assim, quanto maior for o impedimento para a troca de ar, maior será a redução da evaporação de água, o que favorecerá a reciclagem de água juntamente com o NH 3 volatilizado do solo, pois o NH 3 é solúvel e possui alta afi nidado pela água (McGinn & Janzen, 1998).…”

Section: Espuma De 3 MMunclassified

“…Além dos métodos citados, vários outros são encontrados na literatura (McGinn & Janzen, 1998;Loubet et al, 1999;Rochette et al, 2001). Entretanto, a maioria foi avaliada apenas em condições de laboratório (Smith et al, 2007).…”

Section: Introductionunclassified

Calibração de câmara semiaberta estática para quantificação de amônia volatilizada do solo

Araújo

Marsola

Miyazawa

et al. 2009

Pesq. agropec. bras.

View full text Add to dashboard Cite

Resumo -O objetivo deste trabalho foi calibrar uma câmara prática e de baixo custo, para quantifi car a amônia volatilizada do solo. A calibração da câmara foi realizada pela técnica do balanço do isótopo 15 N. A amônia volatilizada foi capturada por uma câmara semiaberta livre estática (SALE), confeccionada a partir de garrafa de plástico transparente de politereftalato de etileno (PET) de 2 L. O interior da câmara apresentava livre circulação de ar, e possuía uma lâmina de espuma de poliuretano, com 2,5 cm de largura e 25 cm de comprimento, pendurada verticalmente, com a extremidade inferior inserida em frasco com solução ácida, que mantinha a espuma saturada. A recuperação do 15 N-NH 3 no coletor aumentou de forma linear com o aumento da taxa de volatilização de NH 3 do solo. Os testes de campo mostraram efi ciência de 57% na recuperação do N-NH 3 volatilizado do solo. O intervalo de coletas das espumas pode variar de um a seis dias, sem comprometer a efi ciência do sistema. Para estudos de campo, com uso do método proposto, o fator de correção de 1,74 deve ser usado para estimar a real taxa de volatilização de amônia do solo.Termos para indexação: fator de emissão de amônia, isótopo 15 N, sistema coletor de NH 3 , ureia, volatilização de amônia. Calibration of a semi-opened static chamber for the quantifi cation of volatilized ammonia from soilAbstract -The objective of this work was to calibrate a practical and low-cost chamber for the quantifi cation of ammonia volatilization from soil. The chamber was calibrated using the 15 N isotope balance technique. The volatilized ammonia was captured by a semi-opened free static chamber built with a 2 L ethylene polyterephthalate (PET) plastic bottle. The inner side of the chamber had free-air circulation and a stripe of polyurethane foam, with 2.5 cm wide and 25 cm long, hanged vertically with the lower end inserted in a bottle containing acid solution, which kept the foam moistened. The recovery of 15 N-ammonia by the chamber increased linearly with the increase in the rate of soil ammonia volatilization. Field tests showed an effi ciency of 57% in the volatilized ammonia recuperation. The sampling interval of foam can vary from one to six days without impairing the system effi ciency. For studies in the fi eld using the proposed method, a correction factor of 1.74 should be used to estimate the real rate of ammonia volatilization from soil.

show abstract

Ammonia sources in agriculture and their measurement

Cited by 76 publications

References 70 publications

Comparison of three simple field methods for ammonia volatilization from manure

Comparison of three simple field methods for ammonia volatilization from manure

The application of inverse-dispersion and gradient methods to estimate ammonia emissions from a penguin colony

Calibração de câmara semiaberta estática para quantificação de amônia volatilizada do solo

Contact Info

Product

Resources

About