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Now showing items 3122-3141 of 4659
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Nitrogen partitioning, energy use efficiency and isotopic fractionation measurements from cows differing in genetic merit fed low-quality pasture in late lactation
(2014)The study was carried out to evaluate energy and nitrogen (N) use efficiencies of high and low breeding worth (BW) cow groups relative toNisotopic fractionation (D15N). Eight high- and eight low-BW cows (meanBWindex = 198 ... -
Nitrogen use efficiency and nitrous oxide emissions from five UK fertilised grasslands
(2019)Intensification of grasslands is necessary to meet the increasing demand of livestock products. The application of nitrogen (N) on grasslands affects the N balance therefore the nitrogen use efficiency (NUE). Emissions of ... -
The nitrogen, carbon and greenhouse gas budget of a grazed, cut and fertilised temperate grassland
(2017)Intensively managed grazed grasslands in temperate climates are globally important environments for the exchange of the greenhouse gases (GHGs) carbon dioxide (CO2), nitrous oxide (N2O) and methane (CH4). We assessed the ... -
Nitrous oxide and methane emissions from a vetch cropping season are changed by long-term tillage practices in a Mediterranean agroecosystem
(2014)Lower greenhouse gas (GHG) emissions from legume-based cropping systems have encouraged their use to deliver mitigation in agricultural systems. Considerable uncertainties remain about the interaction of legumes ... -
Nitrous oxide and methane emissions from cultivated seasonal wetland (dambo) soils with inorganic, organic and integrated nutrient management
(2014)In many smallholder farming areas southern Africa, the cultivation of seasonal wetlands (dambos) represent an important adaptation to climate change. Frequent droughts and poor performance of rain-fed crops in upland ... -
Nitrous oxide emissions and nitrate leaching in an arable rotation resulting from the presence of an intercrop
(2011)The effects of cereal legume intercropping on nitrogen dynamics and losses from an arable rotation are reported. The main hypotheses were that: (a) intercrops can reduce nitrous oxide (N2O) emissions relative to those ... -
Nitrous oxide emissions from cattle excreta applied to a Scottish grassland: effects of soil and climate conditions and a nitrification inhibitor
(2015)Dung and urine excreted onto grasslands are a major source of nitrous oxide (N2O). These N2O emissions stem from inefficient utilisation of nitrogen (N) ingested by ruminants, and the inability of pasture to utilise the ... -
Nitrous oxide emissions from European agriculture; an analysis of variability and drivers of emissions from field experiments
(2012)Nitrous oxide emissions from a network of agricultural experiments in Europe and Zimbabwe were used to explore the relative importance of site and management controls of emissions. At each site, a selection of management ... -
Nitrous oxide emissions from fertilised UK arable soils: fluxes, emission factors and mitigation
(2015)Cultivated agricultural soils are the largest anthropogenic source of nitrous oxide (N2O), a greenhouse gas approx. 298 times stronger than carbon dioxide. As agricultural land covers 40–50% of the earth’s surface agricultural ... -
Nitrous oxide emissions increase exponentially when optimum nitrogen fertilizer rates are exceeded in the North China plain
(2018)The IPCC assume a linear relationship between nitrogen (N) application rate and nitrous oxide (N2O) emissions in inventory reporting, however, a growing number of studies show a nonlinear relationship under specific ...