AMMONIA VOLATILIZATION FROM DIFFERENT FERTILIZER SOURCES AND EFFECTS OF TEMPERATURE AND SOIL pH1

He, Zhenli; Alva, A. K.; Calvert, D. V.; Banks, D. J.

doi:10.1097/00010694-199910000-00006

Cited by 120 publications

(71 citation statements)

References 23 publications

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“…Agricultural N losses are also related to the forms of fertilizer applied. For example, ammonium form (NH + 4 -N) fertilizers such as urea promote rapid volatilization (Vlek and Craswell, 1979;Keller and Mengel, 1986;He et al, 1999), while nitrate form (NO − 3 -N) fertilizers are the major contributors of N leaching (Dinnes et al, 2002). In addition, both ammonium N and nitrate N fertilizers can contribute to N 2 O emission through nitrification and denitrification under different soil temperature and moisture conditions (Azam et al, 2002;Bouwman et al, 2002;Tenuta and Beauchamp, 2003;Venterea and Stanenas, 2008;Snyder et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Historical nitrogen fertilizer use in agricultural ecosystems of the contiguous United States during 1850–2015: application rate, timing, and fertilizer types

Cao

Lü

2018

Earth Syst. Sci. Data

191

154

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Abstract.A tremendous amount of anthropogenic nitrogen (N) fertilizer has been applied to agricultural lands to promote crop production in the US since the 1850s. However, inappropriate N management practices have caused numerous ecological and environmental problems which are difficult to quantify due to the paucity of spatially explicit time-series fertilizer use maps. Understanding and assessing N fertilizer management history could provide important implications for enhancing N use efficiency and reducing N loss. In this study, we therefore developed long-term gridded maps to depict crop-specific N fertilizer use rates, application timing, and the fractions of ammonium N (NH Geospatial analysis revealed that hotspots for N fertilizer use have shifted from the southeastern and eastern US to the Midwest, the Great Plains, and the Northwest over the past century. Specifically, corn in the "Corn Belt" region received the most intensive N input in spring, followed by the application of a large amount of N in fall, implying a high N loss risk in this region. Moreover, spatial-temporal fraction of NH + 4 -N and NO − 3 -N varied largely among regions. Generally, farmers have increasingly favored ammonia N fertilizers over nitrate N fertilizers since the 1940s. The N fertilizer use data developed in this study could serve as an essential input for modeling communities to fully assess N addition impacts, and improve N management to alleviate environmental problems. Datasets used in this study are available at https://doi.org/10.1594/PANGAEA.883585.

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Section: Introductionmentioning

confidence: 99%

Historical nitrogen fertilizer use in agricultural ecosystems of the contiguous United States during 1850–2015: application rate, timing, and fertilizer types

Cao

Lü

2018

Earth Syst. Sci. Data

191

154

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“…Van der Weerden and Jarvis (1997), in a field plot study investigating emissions from urea, reported similar NH 3 emissions for sandy clay loam (pH: 6) and clay loam (pH: 5.6) soils in the UK (Table 3). He et al (1999), in a controlled laboratory study, found NH 3 emissions to increase by 150% as the soil pH increased from 4.5 to 5.5 and by 10% from 5.5 to 6.5. Further increasing the soil pH to 7.5 and 8.5 had no significant effect on NH 3 et al, 1990 to explain any of the variation in measured NH 3 emissions.…”

Section: Discussionmentioning

confidence: 96%

“…NH 3 emissions from urea fertiliser on grassland in Ireland and the UK have been found to be quite variable, ranging from 8 to 68% of applied N (Chambers and Dampney, 2009;Forrestal et al, 2015) and may be due to differences in temperature, precipitation and wind speed following urea application (Black et al, 1987;Hatch et al, 1990;Sommer et al, 1991Sommer et al, , 2003Sanz-Cobena et al, 2011). Another important factor that may contribute to this range in emissions is the variation of soil types, with different physical and chemical characteristics (Stevens et al, 1989;Watson et al, 1994;He et al, 1999). Direct comparisons of NH 3 emissions from different soil types are limited to laboratory-based studies (McGarry et al, 1987;Watson et al, 1994), while the majority of field-based studies on NH 3 emissions from N fertilisers have been conducted on only one or two sites (Chambers and Dampney, 2009;Forrestal et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

A field-based comparison of ammonia emissions from six Irish soil types following urea fertiliser application

Burchill

Lanigan

Forrestal

et al. 2016

Irish Journal of Agricultural and Food Research

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Ammonia (NH3 ) emissions from a range of soil types have been found to differ under laboratory conditions. However, there is lack of studies comparing NH 3 emissions from different soil types under field conditions. The objective was to compare NH 3 emissions from six different soil types under similar environmental conditions in the field following urea fertiliser application. The study was conducted on a lysimeter unit and NH 3 emissions were measured, using wind tunnels, from six different soil types with varying soil characteristics following urea fertiliser application (80 kg N/ha). On average, 17.6% (% total N applied) was volatilised, and there was no significant difference in NH 3 emissions across all soil types. Soil variables, including pH, cation exchange capacity and volumetric moisture, were not able to account for the variation in emissions. Further field studies are required to improve the urea-NH 3 emission factor used for Ireland's NH 3 inventory.

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“…The potential N loss pathways include urea-N volatilization before flooding and denitrification after flooding. Surface applications of urea are not subject to potential volatilization loss until it is hydrolyzed to ammonium (NH 4 + ) via a reaction catalyzed by the urease enzyme (He et al, 1999). This reaction results in soil pH increase in the immediate vicinity of the urea.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of N Additives for Improving N Use Efficiency of Surface Applied Urea to Dry Seeded and Permanently Flooded Rice

Dunn¹,

Wiatrak²

2014

American Journal of Agricultural and Biological Sciences

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There are several potential Nitrogen (N) loss mechanisms in a dry seeded and delayed flood system rice (Oryza Satvia L.) production system including urea volatilization and denitrification. The scope and magnitude of these potential losses are largely weather dependent. Two additives (stabilizers), Agrotain and Nutrisphere-N, have been offered to rice producers for controlling these potential losses. This study compared these two products in their ability to maintain rice grain yields, where cultural management maximizes these loss mechanisms. Response of rice to urea-N stabilizers varied in 2007 and 2008 depending on soil and environmental conditions. In 2007, dry soil surface at time of urea-N application and lack of rainfall resulted in a low loss due to N volatilization. However, urea-N volatilization or denitrification were higher in 2008 and using Agrotain stabilizer resulted in higher yields of rice at 78 kg N ha −1 . Across years, Agrotain and Nutrisphere-N were similar in terms of slightly improving rice grain yields compared to untreated urea at the rate of 78 kg N ha −1 . Therefore, urea stabilizers may offer a good solution in years with high potential for urea-N losses.

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AMMONIA VOLATILIZATION FROM DIFFERENT FERTILIZER SOURCES AND EFFECTS OF TEMPERATURE AND SOIL pH1

Cited by 120 publications

References 23 publications

Historical nitrogen fertilizer use in agricultural ecosystems of the contiguous United States during 1850–2015: application rate, timing, and fertilizer types

Historical nitrogen fertilizer use in agricultural ecosystems of the contiguous United States during 1850–2015: application rate, timing, and fertilizer types

A field-based comparison of ammonia emissions from six Irish soil types following urea fertiliser application

Evaluation of N Additives for Improving N Use Efficiency of Surface Applied Urea to Dry Seeded and Permanently Flooded Rice

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