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Why are median phosphorus concentrations improving in New Zealand streams and rivers?
(Taylor & Francis on behalf of the Royal Society of New Zealand, 2019)
The enrichment of phosphorus (P) in streams and rivers can impair water quality, but concentrations have decreased. We found little evidence that this improvement was caused by a decrease in soil Olsen P concentrations or ...
The mitigation of phosphorus losses from a water-repellent soil used for grazed dairy farming
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 MitAgator: A farm-scale tool to estimate and manage the loss of contaminants from land to water
(American Society of Agricultural and Biological Engineers, 2016)
Land users and managers require decision support tools (DSTs) that enable them to estimate losses of contaminants from land to freshwater. MitAgator is a DST that estimates losses of nitrogen (N), phosphorus (P), sediment, ...