A5007280398- Soil and Water Nutrient Dynamics
- Soil Carbon and Nitrogen Dynamics
- Agriculture, Soil, Plant Science
- Agriculture Sustainability and Environmental Impact
- Phosphorus and nutrient management
- Odor and Emission Control Technologies
- Crop Yield and Soil Fertility
- Atmospheric and Environmental Gas Dynamics
- Ruminant Nutrition and Digestive Physiology
- Economic and Environmental Valuation
- Soil Geostatistics and Mapping
- Rangeland and Wildlife Management
- Environmental Impact and Sustainability
- Rangeland Management and Livestock Ecology
- Sustainable Development and Environmental Management
- Soil erosion and sediment transport
- Plant responses to elevated CO2
- Anaerobic Digestion and Biogas Production
- Land Use and Ecosystem Services
- Recycling and Waste Management Techniques
- Agriculture and Biological Studies
- Ecology and Vegetation Dynamics Studies
- Wastewater Treatment and Nitrogen Removal
- Ammonia Synthesis and Nitrogen Reduction
- Composting and Vermicomposting Techniques
Agricultural Development Advisory Service (United Kingdom)
2014-2024
Permanent grasslands cover 34% of the European Union's agricultural area and are vital for a wide variety ecosystem services essential our society. Over recent decades, permanent grassland has declined land use change continues to threaten its extent. Simultaneously, management intensity increased. We performed systematic literature review on multifunctionality in Europe, examining effects 19 service indicators. Based evidence 696 out 70,456 screened papers, published since 1980, we found...
Summary Nitrous oxide emissions ( N 2 O ) from agricultural land are spatially and temporally variable. Most emission measurements made with small (≪ 1 m area) static chambers. We used chamber data collected multiple field experiments across different geo‐climatic zones in the UK a range of nitrogen treatments to quantify uncertainties associated flux measurements. Data were analysed assess spatial variability fluxes, degree linearity headspace accumulation robustness using ambient air...
Urine patches and dung pats from grazing livestock create hotspots for production emission of the greenhouse gas, nitrous oxide (N2O), represent a large proportion total N2O emissions in many national agricultural gas inventories. As such, there is much interest developing country specific factors (EFs) excretal nitrogen (EF3, pasture, range paddock) deposited during gazing. The aims this study were to generate separate data cattle derived urine dung, provide an evidence base generation EF...
A trial was conducted consisting of 14 experiments across sites in England contrasting soil type and annual rainfall to assess the effectiveness nitrification inhibitors (predominantly dicyandiamide (DCD) but limited assessment also 3, 4-dimethylpyrazole phosphate (DMPP) a commercial product containing two pyrazole derivatives) reducing direct nitrous oxide (N2O) emissions from fertilizer nitrogen (N), cattle urine slurry applications land. Measurements were made impact on ammonia (NH3)...
Intensification of grasslands is necessary to meet the increasing demand livestock products. The application nitrogen (N) on affects N balance therefore use efficiency (NUE). Emissions nitrous oxide (N2O) are produced due fertilisation and low NUE. These emissions depend type rates applied. In this study we have compiled data from 5 UK fertilised grassland sites (Crichton, Drayton, North Wyke, Hillsborough Pwllpeiran) covering a range soil types climates. experiments evaluated effect...
Crop residue incorporation is a common practice to increase or restore organic matter stocks in agricultural soils. However, this often increases emissions of the powerful greenhouse gas nitrous oxide (N2O). Previous meta-analyses have linked various biochemical properties crop residues N2O emissions, but relationships between these been overlooked, hampering our ability predict from specific residues. Here we combine comprehensive databases for and characteristics with random-meta-forest...
Crop residues are important inputs of carbon (C) and nitrogen (N) to soils thus directly indirectly affect nitrous oxide (N2 O) emissions. As the current inventory methodology considers N by crop as sole determining factor for N2 O emissions, it fails consider other underlying factors processes. There is compelling evidence that emissions vary greatly between with different biochemical physical characteristics, concentrations mineralizable decomposable C in residue biomass both enhancing...
Abstract Terrestrial ecosystems, both natural ecosystems and agroecosystems, generate greenhouse gases (GHGs). The chamber method is the most common to quantify GHG fluxes from soil–plant systems better understand factors affecting their generation mitigation. objective of this study was review synthesize literature on designs (non‐flow‐through, non‐steady‐state chamber) associated that affect nitrous oxide (N 2 O) flux measurement when using methods. Chamber design requires consideration...
Adequately estimating soil nitrous oxide (N2 O) emissions using static chambers is challenging due to the high spatial variability and episodic nature of these fluxes. We discuss how design experiments better account for this reduce uncertainty N2 O emission estimates. This paper part a series, each discussing different facets chamber methodology. Aspects experimental sampling affected by include site selection layout, size, areal coverage. Where used, treatment application adds further...
Abstract MANNER ‐ NPK ( MAN ure Nutrient Evaluation Routine) is a decision support tool for quantifying manure (and other organic material) crop available nutrient supply. The user‐friendly design of an earlier version was retained, but in response to user and stakeholder feedback, additional functionality included underpin new revised nitrogen (N) transformation/loss modules (covering ammonia volatilization, nitrate leaching nitrous oxide/di‐nitrogen emissions, N mineralization) also...
Nitrous oxide (N2O) emission factors (EFs) were calculated from measurements of emissions livestock manures applied to UK arable crops and grassland as part a wider research programme reduce uncertainty in the national agricultural N2O inventory enhance regional reporting through increased understanding processes controlling emissions. Field studies undertaken between 2011 2013 at 3 sites UK. measured following autumn spring application different (pig slurry, cattle farmyard manure (FYM),...
Nitrous oxide (N2O) makes the single largest contribution to greenhouse gas (GHG) emissions from UK and European Union agriculture. Ambitious government targets for GHG mitigation are leading implementation of changes in agricultural management order reduce these (mitigation measures). We review evidence those measures with greatest potential which provide an estimated 4.3 t CO2e ha−1 y−1 reduction UK. The options considered were: using biological fixation nitrogen (N) inputs (clover,...
Abstract Manure application to land and deposition of urine dung by grazing animals are major sources ammonia (NH 3 ) nitrous oxide (N 2 O) emissions. Using data on NH N O emissions following land‐applied manures excreta deposited during grazing, emission factors (EFs) disaggregated climate zone were developed, the effects mitigation strategies evaluated. The represent from cattle swine in temperate wet climates, include cattle, sheep, manure wet/dry tropical climates. EFs for broadcast...
Ammonia (NH3) and nitrous oxide (N2O) emissions from livestock manure management have a significant impact on air quality climate change. There is an increasing urgency to improve our understanding of drivers influencing these emissions. We analysed the DATAMAN ("DATAbase for MANaging greenhouse gas ammonia factors") database identify key factors (i) NH3 emission (EFs) cattle swine applied land (ii) N2O EFs land, (iii) urine, dung sheep urine deposited during grazing. Slurry dry matter (DM)...
Abstract Nitrous oxide (N 2 O), ammonia (NH 3 ), and methane (CH 4 ) emissions from the manure management chain of livestock production systems are important contributors to greenhouse gases (GHGs) NH emitted by human activities. Several studies have evaluated manure‐related associated key variables at regional, national, or continental scales. However, there been few focusing on drivers these using a global dataset. An international project was created (DATAMAN) develop database GHG...