Comparison of Two Micrometeorological Methods to Determine Ammonia Volatilization from Lagoon Swine Effluent

Warren, Jason G.; Hattey, Jeffory A.; Turner, Jason Clemn; Phillips, S. B.

doi:10.1080/00103620600626825

Cited by 3 publications

(3 citation statements)

References 8 publications

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“…The radius chosen in this study was smaller (12.5 m) and the surface-roughness length higher due to high-crop stands in the maize experiments. However, Sommer et al (1996) and Warren et al (2006) applied even smaller experimental radii for determining NH 3 losses from manure-storage facilities with the IHF(S) with satisfactory accuracy, as compared to the losses obtained from a reference technique (NH 4 -concentration change in NH 3 source).…”

Section: Discussionmentioning

confidence: 99%

“…In a recent publication, Misselbrook et al (2005) have shown the reliability of the samplers by Leuning et al (1985) often used in such a simplified IHF method. Apart from this IHF approach, another simplified IHF method with different samplers developed by Schjoerring et al (1992) was also frequently used for the determination of ammonia loss in agricultural studies (e.g., Sommer et al, 1996;Schulz and Dämmgen, 1999;Schjoerring and Mattsson, 2001;Warren et al, 2006). Due to the still demanding experimental requirements, these micrometeorological methods are usually applied without replication.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of different methods for the measurement of ammonia volatilization after urea application in Henan Province, China

Pacholski

Cai

Fan

et al. 2008

Z. Pflanzenernähr. Bodenk.

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Ammonia losses following urea fertilization of maize and winter wheat were determined in field trials carried out at Fengqiu Experimental Station in the North China Plain in 1998 and 1999. Four experiments were carried out using two simplified micrometeorological integrated horizontal flux methods [IHF(L) and IHF(S)], a chamber method (calibrated Dräger-Tube Method DTM) and the 15 N-balance method using 15 N-labeled urea. The IHF(L) was taken as the reference method. Both IHF methods showed good agreement in one experiment only, while the IHF(S) overestimated as well as underestimated cumulative ammonia losses compared to IHF(L) in the other experiments (deviation ranged from 12.5% to 64% based on cumulative ammonia losses). Regression analysis of the fluxes showed that in particular different sensitivities of the samplers to wind speed accounted for the discrepancies observed. The IHF(L) and the DTM flux curves were very similar in three experiments, while the values obtained with DTM considerably deviated from IHF(L) results in one experiment. A comparison with apparent fertilizer-N losses determined by the 15 N-labeling approach showed that ammonia volatilization was the major pathway of fertilizer-N loss in this study.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparison of different methods for the measurement of ammonia volatilization after urea application in Henan Province, China

Pacholski

Cai

Fan

et al. 2008

Z. Pflanzenernähr. Bodenk.

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“…Wind speed was <10 m/s except for 1 d during the period of 19 to 23 May where 24% of the 30-min measurements were >10 m/s. Bypass can be assessed by plotting the amount of NH 3 -N in the tubes facing away from the source (background tubes) vs. the amount of NH 3 -N in the tubes facing toward the source (Sommer et al, 1996;Warren et al, 2006;Cabrera et al, 2011). When bypass is observed, NH 3 -N emissions are calculated by adding the NH 3 -N in the background and exposed tubes instead of subtracting the NH 3 -N in background from the exposed tubes.…”

Section: Ammonia Emissionsmentioning

confidence: 99%

Feeding condensed tannins to mitigate ammonia emissions from beef feedlot cattle fed high-protein finishing diets containing distillers grains12

Koenig

Beauchemin

McGinn

2018

Journal of Animal Science

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Two experiments were conducted to determine the effects of feeding a condensed tannin extract (CT) on dry matter intake (DMI), growth performance, carcass traits, and NH3-N emissions of beef feedlot cattle fed high-protein barley-based finishing diets. In Exp. 1, 36 crossbred steers (346 ± 4.2 kg) were individually fed 4 diets with 20% corn dried distillers grains (DG) and increasing concentrations of a CT extract from Acacia mearnsii (black wattle) at 0%, 1.2%, 2.4%, and 3.5% of DM (9 steers per diet) for 52 d. The DMI was not affected at 1.2% and 2.4% but tended (P = 0.08, quadratic effect) to decrease at 3.5% CT extract. There was no effect (P ≥ 0.12) of increasing CT extract on ADG, but G:F tended (P = 0.09) to decrease linearly. In Exp. 2, 148 crossbred steers (457 ± 3.8 kg) were allocated to 16 pens with 4 pens per treatment in a completely randomized design and fed for 83 d. The 4 dietary treatments included 0% corn DG (0DG), 20% DG (20DG), 40% DG (40DG), and 40% DG with 2.5% CT extract (40DGCT) and contained 13.3, 15.9, 20.4, and 19.4% CP, respectively. All cattle were weighed, and blood was collected from 5 steers per pen every 3 wk. Ammonia emissions were measured in four 3-wk periods using the integrated horizontal flux technique with passive NH3 samplers from 2 pens of cattle fed 0DG and 20DG (Period 1), 40DG and 40DGCT (Period 2), 0DG and 40DG (Period 3), and 0DG and 40DGCT (Period 4). There was no effect (P ≥ 0.15) of diet on final body weight (621 ± 7.1 kg), DMI (11.9 ± 0.25 kg/d), ADG (1.98 ± 0.07 kg/d), G:F (166 ± 5.4 g/kg), and carcass traits. Plasma urea N (PUN) increased (P < 0.001) from 0DG to 40DG (113 to 170 ± 6.0 mg N/L) and was reduced (P < 0.001) by 40DGCT (146 mg N/L) compared with 40DG and tended (P = 0.09) to be reduced compared with steers fed 20DG (153 mg N/L). Ammonia-N emissions were greater from cattle fed 40DG [113.7 vs. 70.8 ± 4.57 g N/(steer·d), P = 0.003] and tended to be greater from cattle fed 20DG [51.3 vs. 26.3 ± 11.2 g N/(steer·d), P = 0.11] compared with 0DG. Cattle fed 40DGCT tended to have lower NH3-N emissions compared with cattle fed 40DG [72.7 vs. 95.1 ± 9.3 g N/(steer·d), P = 0.09 and 20.5 vs. 26.5 ± 2.64% N intake, P = 0.11]. Feeding 2.5% CT to beef feedlot cattle fed a high-protein diet had no detrimental effect on performance, reduced PUN indicating lower urinary urea N excretion, and lowered NH3-N emissions by 23%.

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Comparison of Two Passive Flux Methods to Measure Ammonia Volatilization

Cabrera

Vaio

Rema

et al. 2011

Soil Science Society of America Journal

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Comparison of Two Micrometeorological Methods to Determine Ammonia Volatilization from Lagoon Swine Effluent

Cited by 3 publications

References 8 publications

Comparison of different methods for the measurement of ammonia volatilization after urea application in Henan Province, China

Comparison of different methods for the measurement of ammonia volatilization after urea application in Henan Province, China

Feeding condensed tannins to mitigate ammonia emissions from beef feedlot cattle fed high-protein finishing diets containing distillers grains12

Comparison of Two Passive Flux Methods to Measure Ammonia Volatilization

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