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Global Research Alliance N₂O chamber methodology guidelines: Introduction, with health and safety considerations
(Wiley on behalf of American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, 2020-09)
Non-steady-state (NSS) chamber techniques have been used for decades to measure nitrous oxide (N₂O) fluxes from agricultural soils. These techniques are widely used because they are relatively inexpensive, easy to adopt, ...
Irrigation of DOC-rich liquid promotes potential denitrification rate and decreases N₂O/(N₂O+N₂) product ratio in a 0–2 m soil profile
(Elsevier, 2017-03)
Lack of dissolved organic carbon (DOC) is generally one of the key factors limiting denitrification in subsoil beneath the root zone. Despite a number of laboratory DOC amendment studies, the effects of in situ DOC ...
A review of indirect N₂O emission factors from artificial agricultural waters
(IOP Publishing, 2021-04)
Nitrous oxide (N₂O) produced from dissolved nitrogen (N) compounds in agricultural runoff water must be accounted for when reporting N₂O budgets from agricultural industries. Constructed ('artificial') water bodies within ...
Co-application of a biochar and an electric potential accelerates soil nitrate removal while decreasing N₂O emission
(Elsevier, 2020-08-12)
Denitrification is an important mechanism for mitigating groundwater nitrate (NO3−) pollution. Our previous results showed that electric potential application (−0.5 V versus standard hydrogen electrode) accelerated subsoil ...
Reducing nitrogen leaching losses in grazed dairy systems using an Italian ryegrass-plantain-white clover forage mix
(Wiley on behalf of the British Grassland Society and the European Grassland Federation, 2018-12)
In grazed agricultural systems, animal urine patches are the major source of nitrogen (N) leaching losses and can cause a decline in water quality. Urine-N rates often exceed plant requirements, and there is a need for ...
Soil type, bulk density and drainage effects on relative gas diffusivity and N₂O emissions
(CSIRO, 2020-11-01)
Nitrous oxide (N₂O), a greenhouse gas, contributes to stratospheric ozone depletion. Agricultural fertiliser use and animal excreta dominate anthropogenic N₂O emissions. Soil relative gas diffusivity (Dp/Do) has been used ...
Seasonally distinct sources of N₂O in acid organic soil drained for agriculture as revealed by N₂O isotopomer analysis
(Springer Nature, 2020-01-01)
Acid organic soils drained for agriculture are hotspots for nitrous oxide (N₂O) emissions. Previous studies have indicated that water table (WT) depth and nitrogen (N) availability are important environmental controls, ...
Lime and soil moisture effects on nitrous oxide emissions from a urine patch
(Soil Science Society of America, 2004)
Liming has been mooted as a mitigation option for lowering soil N₂O emissions. This study investigated the effect of soil pH and soil water content on N₂O and N₂ emissions following the addition of synthetic urine (500 kg ...
Seasonal irrigation affects the partitioning of new photosynthate carbon in soil
(Elsevier, 2020-04)
Long-term irrigation of temperate pastures has been reported to either increase or decrease soil organic carbon (SOC) stocks when compared with dryland systems. Understanding the short-term effects of irrigation on the ...
Effects of nitrate and water content on acetylene inhibition technique bias when analysing soil denitrification rates under an aerobic atmosphere
(Elsevier, 2019-01-15)
The acetylene inhibition technique (AIT) is the most widely used indirect method of determining denitrification fluxes. Although AIT bias has long been recognised, the contributions of soil denitrification-related parameters ...