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Using organic phosphorus to sustain pasture productivity: A perspective
(Elsevier, 2014-06)
Organic phosphorus (P) in grazed pastures/grasslands could sustain production systems that historically relied on inorganic P fertiliser. Interactions between inorganic P, plants and soils have been studied extensively. ...
Density effects on soil-water characteristics, soil-gas diffusivity, and emissions of N₂O and N₂ from a re-packed pasture soil
(Soil Science Society of America, 2019-02)
Density-induced soil structural changes may potentially alter both soil total porosity and soil pore size distribution, and thus change the soil’s water retention characteristics, gas diffusion and transport properties, ...
Co-occurring increased phosphatase activity and labile P depletion in the rhizosphere of Lupinus angustifolius assessed with a novel, combined 2D-imaging approach
(Elsevier, 2021-02)
Innovative non-destructive 2D imaging methods such as zymography and diffusive gradients in thin films (DGT) have been developed recently to assess the distribution of phosphatase activity and labile solutes at the root-soil ...
Nitrous oxide emissions and biogeochemical responses to soil freezing-thawing and drying-wetting
(Elsevier, 2018-02)
Soil freeze-thaw (FT) and dry-wet (DW) cycles are brief transitory biophysical changes, but these events have important implications in determining the timing and magnitude of N₂O emissions and may represent a significant ...
Abiotic processes dominate CO₂ fluxes in Antarctic soils
(Elsevier, 2012-10)
Ecosystems within the McMurdo Dry Valleys of Antarctica are highly sensitive to environmental change. Increases in soil temperature and/or moisture content may dramatically change rates of soil respiration and soil carbon ...
Effects of long-term grassland management on the chemical nature and bioavailability of soil phosphorus
(Springer-Verlag, 2012-07)
Relationships between the relative solubility of soil phosphorus (P) and short-term plant P uptake were investigated using soils obtained from a field trial that had been maintained under contrasting mowing regimen (no ...
Impacts of endemic Maoridrilus earthworms (Megascolecidae) in biosolids-amended soil
(Crop Science Society of America, American Society of Agronomy, and Soil Science Society of America, 2017-01-12)
Biosolids can be a valuable fertilizer for agriculture and in ecological restoration, although there are concerns about contaminants. Earthworm activity, including vermicomposting of biosolids, may influence the efficacy ...
Compaction influences N₂O and N₂ emissions from ¹⁵N-labeled synthetic urine in wet soils during successive saturation/drainage cycles
(Elsevier B.V., 2015-09)
Nitrous oxide emitted from urine patches is a key source of agricultural greenhouse gas emissions. A better understanding of the complex soil environmental and biochemical regulation of urine-N transformations in wet soils ...
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 ...