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August 30, 2024
Resources related to
Phosphorus
Adding phosphorus to soil can help grow plants – but too much in our water contributes to algal blooms. These resources can improve your understanding of how phosphorus moves from land to water, and help you find effective ways to minimise phosphorus loss.
Showing 1 - 12 of 131 results
Journal Article
Likely controls on dissolved reactive phosphorus concentrations in baseflow of an agricultural stream.
High baseflow phosphorus (P) concentrations increase the likelihood of periphyton blooms. Several physical and chemical factors can control baseflow P concentrations such as hydraulic exchange…
Journal Article
Phosphorus transport in subsurface flow from a stony soil under irrigated and non-irrigated lucerne
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…
Journal Article
Long-term atmospheric carbon dioxide enrichment decreases soil phosphorus availability in a grazed temperate pasture
Elevated atmospheric carbon dioxide (eCO2) associated with climate change increases plant production and soil nutrient transformations. However, changes in soil phosphorus (P) availability and dynamics…
Summary
Assessing the Effectiveness of On-Farm Mitigation Actions
This research summary describes how effective on-farm mitigations have been so far, by comparing losses of nitrogen (N), phosphorus (P) and sediment in 1995 and…
Journal Article
Role of organic anions and phosphatase enzymes in phosphorus acquisition in the rhizosphere of legumes and grasses grown in a low phosphorus pasture soil
Rhizosphere processes play a critical role in phosphorus (P) acquisition by plants and microbes, especially under P-limited conditions. Here, we investigated the impacts of nutrient…
Journal Article
Implications of water quality policy on land use: A case study of the approach in NZ
Achieving good water quality through output controls is difficult. The New Zealand Government recently proposed enforceable bottom lines to protect ecosystem health of 1 mg…
Journal Article
The biotic contribution to the benthic stream sediment phosphorus buffer
Benthic stream sediments interact strongly with phosphorus (P) and can buffer dissolved reactive P (DRP) concentrations. The sediment P buffer can be measured with the…
Journal Article
Mitigation of phosphorus, sediment and Escherichia coli losses in runoff from a dairy farm roadway
Dairy cow deposits on farm roadways are a potential source of contaminants entering streams. Phosphorus (P), suspended sediment (SS) and Escherichia coli (E. coli) loads…
Journal Article
Plant species rather than elevated atmospheric CO2 impacts rhizosphere properties and phosphorus fractions in a phosphorus deficient soil
By 2050, elevated atmospheric CO2 (eCO2) could stimulate plant growth, but dwindling phosphorus (P) stocks in the soil could limit growth. However, little is known…
Journal Article
Quantifying contaminant losses to water from pastoral land uses in NZ II: The effects of some farm mitigation actions over the past two decades
In New Zealand the primary sector together with central and local government agencies have been promoting measures to mitigate the adverse effect of farming practices…
Journal Article
Quantifying contaminant losses to water from pastoral land uses in NZ III: What could be achieved by 2035?
To meet the water quality outcomes sought by catchment communities and regulators, the losses of nitrogen (N), phosphorus (P) and sediment from dairy and sheep/beef…
Journal Article
Quantifying contaminant losses to water from pastoral landuses in New Zealand II. The effects of some farm mitigation actions over the past two decades
In New Zealand the primary sector together with central and local government agencies have been promoting measures to mitigate the adverse effect of farming practices…