Search Results - "Clough, T. J."
-
1
Unweathered Wood Biochar Impact on Nitrous Oxide Emissions from a Bovine-Urine-Amended Pasture Soil
Published in Soil Science Society of America journal (01-05-2010)“…Low-temperature pyrolysis of biomass produces a product known as biochar. The incorporation of this material into the soil has been advocated as a C…”
Get full text
Journal Article -
2
The temperature dependence of dicyandiamide (DCD) degradation in soils: A data synthesis
Published in Soil biology & biochemistry (01-07-2008)“…Dicyandiamide (DCD, C 2H 4N 4) is a nitrification inhibitor that has been studied for more than 80 years. However, there are few papers that have examined the…”
Get full text
Journal Article -
3
Denitrification in vadose zone material amended with dissolved organic matter from topsoil and subsoil
Published in Soil biology & biochemistry (01-06-2013)“…Limited information is available on the potential of subsoil and underlying alluvial gravels (vadose zone) to denitrify leached nitrate, though it is…”
Get full text
Journal Article -
4
Impact of short-interval, repeat application of dicyandiamide on soil N transformation in urine patches
Published in Agriculture, ecosystems & environment (01-03-2013)“…► Biogeochemistry of N in pastoral soil was examined using molecular and chemical tools. ► Urine-stimulated nitrification, denitrification and primed soil…”
Get full text
Journal Article -
5
Determining the nitrous oxide transfer velocity and emission factor of an agricultural drain
Published in New Zealand journal of agricultural research (03-07-2017)“…There have been few studies examining indirect nitrous oxide emissions associated with nitrogen (N) leaching from agricultural soils. For agricultural drainage…”
Get full text
Journal Article -
6
Nitrous Oxide Dynamics in a Braided River System, New Zealand
Published in Journal of environmental quality (01-09-2011)“…Recently the Intergovernmental Panel on Climate Change (IPCC) emission factor EF5‐r was revised downward to a value of 0.0025 kg N2O–N per kg NO3−–N leached…”
Get full text
Journal Article -
7
Using near-continuous measurements of N2O emission from urine-affected soil to guide manual gas sampling regimes
Published in New Zealand journal of agricultural research (01-03-2013)“…Nitrous oxide (N₂O) fluxes are influenced by fluctuating soil temperature and external factors such as rainfall events. Therefore, sampling time, frequency of…”
Get full text
Journal Article -
8
review of the movement and fate of N₂O in the subsoil
Published in Nutrient cycling in agroecosystems (01-05-2005)“…Understanding the fate of N2O in the subsoil is important in accurately assessing the direct and indirect fluxes of N2O to the environment. The production,…”
Get full text
Journal Article -
9
Impact of bovine urine deposition on soil microbial activity, biomass, and community structure
Published in Applied soil ecology : a section of Agriculture, ecosystems & environment (01-01-2010)“…Nitrogen (N) from urine excreted by grazing animals can be transformed into N compounds that have detrimental effects on the environment. These include…”
Get full text
Journal Article -
10
Plant N uptake in the periphery of a bovine urine patch: determining the 'effective area'
Published in New Zealand journal of agricultural research (02-04-2016)“…The extent to which the wetted soil area of a urine patch influences surrounding pasture is relatively unknown. The study objective was to use 15 N tracer to…”
Get full text
Journal Article -
11
Vertical stratification of redox conditions, denitrification and recharge in shallow groundwater on a volcanic hillslope containing relict organic matter
Published in The Science of the total environment (15-10-2018)“…Natural denitrification in groundwater systems has been recognised as an ecosystem service that reduces the impact of agriculturally-derived nitrate inputs to…”
Get full text
Journal Article -
12
Short-term consequences of spatial heterogeneity in soil nitrogen concentrations caused by urine patches of different sizes
Published in Applied soil ecology : a section of Agriculture, ecosystems & environment (01-07-2009)“…The scale of spatial heterogeneity in soil nitrogen (N) concentrations varies considerably in grazed systems, because grazers vary in the volume of urine they…”
Get full text
Journal Article -
13
Accounting for the utilization of a N₂O mitigation tool in the IPCC inventory methodology for agricultural soils
Published in Nutrient cycling in agroecosystems (01-05-2007)“…In this study we review recent studies where dicyandiamide was used as a nitrification inhibitor to reduce both N₂O emissions from urine patches and nitrate…”
Get full text
Journal Article -
14
Biochar does not affect soil N-transformations or microbial community structure under ruminant urine patches but does alter relative proportions of nitrogen cycling bacteria
Published in Agriculture, ecosystems & environment (15-06-2014)“…•Biochar amendment did not affect the microbial community structure.•Biochar presence increased the relative abundance of 50% of the detected bacteria.•Biochar…”
Get full text
Journal Article -
15
Increasing soil aeration reduces mitigation efficacy of dicyandiamide when targeted at ruminant urine-derived N2O emissions
Published in New Zealand journal of agricultural research (02-10-2015)“…Soil aeration effects on the efficacy of dicyandiamide (DCD) at reducing reactive nitrous oxide (N ₂O) fluxes from ruminant urine patches have not been…”
Get full text
Journal Article -
16
Sources of N2O–N following simulated animal treading of ungrazed pastures
Published in New Zealand journal of agricultural research (01-09-2014)“…It has been previously hypothesised that the treading of pastures by grazing animals can increase nitrous oxide (N ₂O) emissions as the result of reduced plant…”
Get full text
Journal Article -
17
Influence of soil pH on NO x and N2O emissions from bovine urine applied to soil columns
Published in New Zealand journal of agricultural research (01-12-2011)“…The nitrous oxide (N 2 O) molecule is both a greenhouse gas and a precursor to the formation of nitric oxide (NO) in the stratosphere, which is subsequently…”
Get full text
Journal Article -
18
Evaluation of the stable isotope signatures of nitrate to detect denitrification in a shallow groundwater system in New Zealand
Published in Agriculture, ecosystems & environment (01-04-2015)“…•Stable isotopes of nitrate detected denitrification in shallow, young, groundwater.•Denitrification was shown to be seasonal.•Understanding the age of…”
Get full text
Journal Article -
19
The Impact of Relict Organic Materials on the Denitrification Capacity in the Unsaturated–Saturated Zone Continuum of Three Volcanic Profiles
Published in Journal of environmental quality (01-01-2013)“…The denitrification capacity of wetlands, riparian zones, and aquifers in glacial outwash areas is well documented, but little or no information exists for…”
Get full text
Journal Article -
20
Effects of forage type and gibberellic acid on nitrate leaching losses
Published in Soil use and management (01-12-2016)“…Nitrogen (N) leaching from soil into water is a significant concern for intensively grazed forage‐based systems because it can cause a decline in water quality…”
Get full text
Journal Article