Assessment Of Ammonia Volatilization From Flooded Soil Systems

Jayaweera, G. R.; Mikkelsen, D. S.

doi:10.1016/s0065-2113(08)60044-9

Cited by 40 publications

(40 citation statements)

References 74 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…-N concentration of the surface water was influenced by nitrogen application rates, which was the decisive factor affecting the ammonia volatilization loss (Jayaweera and Mikkelsen 1991;Li et al 2008). Figure 4 demonstrated that in the surface water NH 4 ?…”

Section: Change In the Nh 4 ? -N Concentration Of Surface Water Aftermentioning

confidence: 98%

See 1 more Smart Citation

Characteristics of ammonia volatilization on rice grown under different nitrogen application rates and its quantitative predictions in Erhai Lake Watershed, China

Chen

Lei

et al. 2014

Nutr Cycl Agroecosyst

View full text Add to dashboard Cite

Ammonia (NH 3 ) volatilization was measured with the continuous airflow enclosure chamber method under different urea application amounts using pots in paddy fields in Erhai Lake Watershed, China. Several factors, such as the urea nitrogen application amount, days after fertilization, NH 4 ? -N concentration and pH of surface water, and climate, that could affect ammonia volatilization were also studied. The results indicated that ammonia volatilization loss increased linearly with increasing amounts of applied urea. The ratios of the ammonia volatilization loss to the applied nitrogen ranged from 16.59 to 18.43 % with different nitrogen application amounts. The ammonia volatilization loss peaked within the first 3 days after fertilization, which accounted for 65-82 % of the total ammonia loss in each period. We observed the following degree of the effects of various factors on ammonia volatilization: NH 4 ? -N concentration of surface water [ urea application amount [ pH of surface water [ days after fertilization [ water temperature of surface water. The wind velocity and rainfall were the key factors affecting ammonia volatilization. The model of ammonia volatilization flux was established by using the measured dates from 2013 and was represented as Y = 0.008(x 1 ? x 2 ? x 3 ) ? e 0.056x4-0.068x5 -0.623 (R 2 = 0.81, P \ 0.0001). The model was verified by using the measured dates from 2012. The calculated values fitted well with the field observations. However, the model parameters need to be amended using the model to predict the ammonia volatilization flux in the rice season from other regions.

show abstract

Section: Change In the Nh 4 ? -N Concentration Of Surface Water Aftermentioning

confidence: 98%

“…The NH 4 ? -N concentration in the surface water has also been tested for its effects on ammonia volatilization losses in rice paddies (Xu et al 2012;Jayaweera and Mikkelsen 1991;Freney et al 1985;Li et al 2008). The ammonia volatilization flux exponentially increased with increasing NH 4 ?…”

Section: Change In the Nh 4 ? -N Concentration Of Surface Water Aftermentioning

confidence: 99%

Characteristics of ammonia volatilization on rice grown under different nitrogen application rates and its quantitative predictions in Erhai Lake Watershed, China

Chen

Lei

et al. 2014

Nutr Cycl Agroecosyst

View full text Add to dashboard Cite

show abstract

“…Ammonium nitrogen contents in surface water dominated the AV loss from transplanted rice fields (Jayaweera and Mikkelsen, 1991;Li et al, 2008a;Watanabe et al, 2009). It was confirmed it in DSR fields in current experiment.…”

Section: Discussionmentioning

confidence: 99%

Ammonia Volatilization from Direct Seeded Later-rice Fields as Affected by Irrigation and Nitrogen Managements

Liao¹,

Shao²,

RenJing³

et al. 2015

IJAB

View full text Add to dashboard Cite

Ammonia volatilization (AV) from direct seeded later-rice (DSR) fields was investigated based on plot experiment with different irrigation (traditional flooding irrigation (TI) and controlled irrigation (CI)) and nitrogen (farmers' fertilization practice (FF) and controlled released urea (CU)) managements. Seasonal AV losses were 64.0, 69.5, 33.0 and 24.6 kg N ha -1 from CIFF, TIFF, TICU and CICU fields, accounting for 18.3, 19.9, 13.7 and 10.3% of nitrogen inputs not as high as expected, and falling in the range reported in transplanted rice fields with the similar nitrogen treatments. Thus, it is difficult to answer the question if DSR practice will lead to significantly higher AV loss than transplanted cultivation. Mixed basal nitrogen fertilizer into muddy and frequently rainfall in the first forty days in rice season might account for the low AV loss percentages from DSR field in current research. Both nitrogen and irrigation management significantly affected AV loss from DSR fields, with the nitrogen management as the predominant factor. Compared with the farmers' fertilization， controlled released urea led to the reduced and retarded AV process. The controlled irrigation led to higher AV peaks immediately after nitrogen application in short period, but lower AV rates in long periods after the pulse AV emission than traditional flooding irrigation. The combination of controlled irrigation and controlled released urea is help to reduce AV loss from DSR field.

show abstract

“…two orders of magnitude lower (Kester, 1975;Skirrow, 1975;Weiler, 1979;Murphy & Brownlee, 1981 ;Jayaweera & Mikkelson, 1991). Tables 1 and 2 suggest that, even if all of the NHg released from continental communities were to be transferred via the atmosphere into the oceans, it would contributed only 2-23 % of the total nitrogen used in primary production, although it could supply 11-2% of the 'new' production, i.e.…”

Section: Comparisons Among the Abilities Of Roots And Shoots Of Terrementioning

confidence: 99%

Ammonia and ammonium fluxes between photolithotrophs and the environment in relation to the global nitrogen cycle

1992

View full text Add to dashboard Cite

summary Ammonium (used here to signify NH4+ plus NH3) is the immediate inorganic precursor of organic nitrogen in photolithotrophs. In marine habitats ammonium is also the major exogenous nitrogen source, and the same is probably true of terrestrial habitats. In addition to this major role of ammonium as exogenous nitrogen source, it is also quantitatively very important as an endogenous nitrogen source with nitrate or N2 as exogenous nitrogen source, and as a recycled nitrogen compound in photorespiration and in phenylpropanoid synthesis. The shoots of terrestrial plants have higher NH3 compensation partial pressures than most natural soils, and especially higher than that of the sea. However, long‐distance transport of gaseous NH3 (e.g. from continents to oceans) is a negligible component of the ‘natural’ global nitrogen cycle. Current concepts of evolution of the atmosphere and biosphere do not involve high partial pressure of NH3 in the atmosphere: any ammonium produced in inorganic or biological processes is removed from the atmosphere by rain‐out, or, over larger time‐scales, by the action of ultraviolet radiation (especially before the ozone screen came into being) and of hydroxyl radicals (especially after oxygenation of the atmosphere). In addition to posing problems for the origin of life and arguing for an early rather than a late evolution of diazotrophy, a low NH3 partial pressure renders implausible arguments that phenylpropanoid synthesis was restricted early in evolution by the effect of high ammonia in reversing phenylalanine ammonia‐lyase.

show abstract

Assessment Of Ammonia Volatilization From Flooded Soil Systems

Cited by 40 publications

References 74 publications

Characteristics of ammonia volatilization on rice grown under different nitrogen application rates and its quantitative predictions in Erhai Lake Watershed, China

Characteristics of ammonia volatilization on rice grown under different nitrogen application rates and its quantitative predictions in Erhai Lake Watershed, China

Ammonia Volatilization from Direct Seeded Later-rice Fields as Affected by Irrigation and Nitrogen Managements

Ammonia and ammonium fluxes between photolithotrophs and the environment in relation to the global nitrogen cycle

Contact Info

Product

Resources

About