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Changes in soil phosphorus availability and potential phosphorus loss following cessation of phosphorus fertiliser inputs
(CSIRO Publishing, 2013-09-23)
Long-term application of phosphorus (P) fertilisers to agricultural soils can lead to in the accumulation of P in soil. Determining the rate of decline in soil P following the cessation of P fertiliser inputs is critical ...
Pathways of soil genesis in the Coast Range of Oregon, USA
(Springer Netherlands on behalf of the Royal Netherlands Society of Agricultural Science, 2013-06)
Background and Aims: Soil chronosequences on marine terraces along the Pacific Coast of California and Oregon show evidence of podzolization, though soils ultimately evolve to Ultisols. It is not clear if this pathway of ...
Measuring excreta patch distribution in grazed pasture through low-cost image analysis
(Wiley on behalf of the British Grassland Society and the European Grassland Federation, 2013-09)
Nutrient losses from grazed pasture are an important non-point source of water pollution. The distribution of animal urine patches on pasture is an important factor in determining nitrate losses and influencing pasture ...
Nitrous oxide emissions from in situ deposition of ¹⁵N-labeled ryegrass litter in a pasture soil
(Crop Science Society of America, Soil Science Society of America and American Society of Agronomy, 2013-03)
During pasture grazing, freshly harvested herbage (litterfall) is dropped onto soils from the mouths of dairy cattle, potentially inducing nitrous oxide (N₂O) emissions. Although the Intergovernmental Panel on Climate ...
Quantifying ecosystem rejuvenation: foliar nutrient concentrations and vegetation communities across a dust gradient and a chronosequence
(Springer Netherlands on behalf of the Royal Netherlands Society of Agricultural Science, 2013-06)
Background and aims: Due to long-term weathering of land surfaces, aeolian nutrient contributions can become essential to maintain ecosystem fertility and avoid retrogression. However, studies that consider the qualitative ...
Denitrification in vadose zone material amended with dissolved organic matter from topsoil and subsoil
(Elsevier Ltd, 2013-06)
Limited information is available on the potential of subsoil and underlying alluvial gravels (vadose zone) to denitrify leached nitrate, though it is recognized that C availability is an important constraint. In this ...