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May 02, 2024
Resources related to
Nutrient Management
New Zealand farmers can keep more nutrients in their soil by choosing the right fertiliser for their type of land and applying it strategically, so it stays on the farm rather than draining away as pollution.
Showing 1 - 12 of 37 results
Journal Article
Direct exports of phosphorus from fertilizers applied to grazed pastures in Australasia
The 4R concept was developed to help mitigate P exports. This review investigates the factors affecting P exports soon after the application of mineral fertilizers…
Journal Article
Water quality issues facing dairy farming: potential natural and built attenuation of nitrate losses in sensitive agricultural catchments
We developed a conceptual catchment-scale modelling analysis assessing potential natural and built attenuation of nitrate losses from dairy farming in the Tararua and Rangitikei catchments…
Journal Article
The potential for potassium chloride fertiliser applications to leach cadmium from a grazed pasture soil
Cadmium (Cd) is a biotoxic element that can enter the human food chain via plants grown in Cd-enriched soil. Chloride (Cl) can solubilise Cd in…
Journal Article
The mitigation of phosphorus losses from a water repellent soil used for grazed dairy farming
Soil water repellency (SWR) decreases the infiltration rate of soil, increasing the potential for surface runoff in response to rainfall (Bauters et al., 2000). The…
Journal Article
The ability to reduce soil legacy phosphorus at a country scale
The build-up of soil phosphorus (P) beyond plant requirements can lead to a long-term legacy of P losses that could impair surface water quality. Using…
Journal Article
Farm-scale carbon and nitrogen fluxes in pastoral dairy production systems using different nitrogen fertilizer regimes
The nitrogen (N) fertilizer application rate (kg ha/1 year) in pastoral dairy systems affects the flow of N through the soil, plant and animal pools…
Journal Article
Total soil cadmium concentrations in the Winchmore long-term phosphorus fertiliser trial are still increasing
Reliable data on the rate of cadmium (Cd) accumulation in soils that receive phosphorus (P) fertiliser is vital to help manage the impact of Cd…
Summary
Revealing Groundwater’s Denitrification Capacity
A new way to measure denitrification in groundwater has been proved, and could make analysing groundwater’s denitrification capacity more accessible for regional councils and farmers.…
Infographic
Method for measuring denitrification in groundwater
Groundwater contains dissolved nitrogen gas (from both the air and denitrification), and dissolved argon and neon gases (which come only from the air). By extracting…
Infographic
The denitrification process
Denitrification is a natural process that reduces the amount of nitrate entering rivers and other freshwater bodies. In some groundwater systems, microorganisms turn nitrate into…
Summary
Quantifying Excess Nitrogen Loads in Fresh Water
At least 43% of New Zealand’s agricultural land (31% of New Zealand’s total land area) is in catchments that are under pressure (‘pressure’ meaning the…
Video
What Do Rural Communities Have On Their Minds When Discussing Land Management Actions That Help Improve Water Quality?
This presentation was winner of the People’s Choice Award at the New Zealand Hydrological Society Conference 2020. I am a freshwater ecologist and science communicator…