Search
Now showing items 1-10 of 45
Codenitrification under ruminant urine patch conditions: microbial contributions, substrates and nitrogen flux kinetics
(Lincoln University, 2018)
A large fraction of anthropogenic nitrous oxide (N2O) emissions can be traced back to grazed grasslands, where N2O is mainly emitted from livestock-urine affected soils (so called ‘urine patches’). Since N2O is a potent ...
Stable isotopes as indicators of nitrate attenuation across landscapes
(Lincoln University, 2013)
Mitigating the cascade of environmental damage caused by the movement of excess reactive nitrogen (N) from land to sea is currently limited by difficulties in precisely and accurately measuring N fluxes due to variable ...
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 ...
Dairy farm effluent effects on urine patch nitrous oxide and carbon dioxide emissions
(American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, 2005)
Dairy farm effluent (DFE) comprises animal feces, urine, and wash-down water collected at the milking shed. This is collected daily during the milking season and sprayed onto grazed dairy pastures. Urine patches in grazed ...
The land use suitability concept: Introduction and an application of the concept to inform sustainable productivity within environmental constraints
(Elsevier, 2018-08)
The Land Use Suitability (LUS) concept informs decision-making by providing stakeholders with integrated information about the economic, environmental, social and cultural consequences of land use choices. This paper ...
Direct exports of phosphorus from fertilizers applied to grazed pastures
(Crop Science Society of America with the American Society of Agronomy and the Soil Science Society of America, 2019-08-21)
Since its discovery in 1669, phosphorus (P) in the form of fertilizer has become an essential input for many agroecosystems. By introducing a concentrated P source, fertilizers increase short-term P export potential soon ...
The mitigation of phosphorus losses from a water-repellent soil used for grazed dairy farming
(Elsevier, 2020-03-15)
Phosphorus (P) losses via surface runoff can be large. Soil water repellency (SWR) occurs in warm and dry conditions. If SWR coincides with P fertiliser applications, the risk of P loss by surface runoff may increase. ...
An assessment of cadmium availability in cadmium-contaminated soils using isotope exchange kinetics
(Soil Science Society of America, 2004)
There has been much research conducted to find suitable methods for the determination of available Cd in soils. In recent years, an isotope exchange kinetics (IEK) technique has been tested to describe the kinetic transfer ...
Kinetics of cadmium and cobalt desorption from iron and manganese oxides
(Soil Science Society of America, 1995)
Oxides of Fe and Mn in soils are capable of sorbing large amounts of trace metal ions and can therefore be important in controlling trace metal concentrations in soil solution, and hence trace metal bioavailability in ...
Fractionation and distribution of arsenic in soils contaminated by cattle dip
(American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, 1998)
Soils surrounding cattle dips in Australia are known to be highly contaminated with As and are potentially of major concern to the environment and human health. A study of 11 dip sites in northern New South Wales (NSW) has ...