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Do soil cadmium concentrations decline after phosphate fertiliser application is stopped: A comparison of long-term pasture trials in New Zealand?
(Elsevier, 2022-01-15)
Decreasing soil cadmium (Cd) is one method of removing Cd from the food chain. Phosphorus (P) fertilisers are a major source of Cd inputs into soil. Stopping P fertiliser should theoretically decrease Cd inputs and soil ...
Temperature and nitrogen effects on phosphorus uptake by agricultural stream-bed sediments
(Crop Science Society of America with America Society of Agronomy and Soil Science Society of America, 2017-03-17)
Climate change will likely increase the growing season, temperatures, and ratio of nitrogen (N) to phosphorus (P) loss from land to water. However, it is unknown how these factors influence P concentrations in streams. We ...
Phosphorus transport in subsurface flow from a stony soil under irrigated and non-irrigated lucerne
(Taylor & Francis on behalf of the Royal Society of New Zealand, 2020-07-29)
The extent of phosphorus (P) loss from soils under deep rooting crops such as lucerne is currently unknown. This study used large lysimeters (2.0 by 1.5 m) to quantify the amounts and forms of P in drainage under lucerne ...
When experts disagree: the need to rethink indicator selection for assessing sustainability of agriculture
(Springer Netherlands, 2016-05-11)
© 2016 Springer Science+Business Media Dordrecht. Sustainability indicators are well recognized for their potential to assess and monitor sustainable development of agricultural systems. A large number of indicators are ...
The use of alum to decrease phosphorus loss from dairy farm laneways in southern New Zealand
(British Society of Soil Science, 2016-03)
© 2016 British Society of Soil Science. Dairy farm laneways are sources of enriched P loss. Aluminium sulphate (alum) has been shown to decrease P loss when applied to land; our hypothesis was that alum may serve as a ...
Municipal composts reduce the transfer of Cd from soil to vegetables
(Elsevier, 2016-06)
Cadmium (Cd) is a non-essential trace element that accumulates in agricultural soils through the application of Cd-rich phosphate fertiliser. Vegetables can accumulate Cd to concentrations that sometimes exceed food safety ...
The effect of irrigation and urine application on phosphorus losses to subsurface flow from a stony soil
(Elsevier, 2016-10-03)
Diffuse losses of phosphorus (P) from agricultural land via subsurface flow (viz leaching) can result in degradation of surface water quality. Factors such as irrigation and soil pH can increase the solubility of P and its ...
Assessing the yield and load of contaminants with stream order: Would policy requiring livestock to be fenced out of high-order streams decrease catchment contaminant loads?
(Crop Science Society of America, American Society of Agronomy, and Soil Science Society of America, 2017-09)
Catchment contaminant loads vary with stream order as catchment characteristics influence inputs and in-stream processing. However, the relative influence and policy significance of these characteristics across a number ...
Anthropogenic increases of catchment nitrogen and phosphorus loads in New Zealand
(Taylor & Francis on behalf of the Royal Society of New Zealand, 2018)
Spatial regression models were used to predict yields (kg ha⁻¹ yr⁻¹) of nitrogen (N) and phosphorus (P) discharged from catchments throughout New Zealand under natural and current conditions. The models were derived using ...
Biogeochemical cycles and biodiversity as key drivers of ecosystem services provided by soils
(Copernicus Publications on behalf of the European Geosciences Union, 2015-11-19)
Soils play a pivotal role in major global biogeochemical cycles (carbon, nutrient, and water), while hosting the largest diversity of organisms on land. Because of this, soils deliver fundamental ecosystem services, and ...