Now showing items 1-6 of 6
Balancing water-quality threats from nutrients and production in Australian and New Zealand dairy farms under low profit margins
(CSIRO Publishing, 2017-06)
The loss of nitrogen (N) and phosphorus (P) from dairy-farmed land can impair water quality. Efforts to curtail these losses in Australia and New Zealand (Australasia) have involved a mixture of voluntary and regulatory ...
Nutrient-enriched soils and native N-fixing plants in New Zealand
(Wiley-VCH Verlag, 2019-02-06)
Approximately 40% of New Zealand's land mass is fertilized grassland with entirely non-native plants, but currently there is substantially increased interest in restoration of native plants into contemporary agricultural ...
Quantifying contaminant losses to water from pastoral landuses in New Zealand II. The effects of some farm mitigation actions over the past two decades
(Taylor & Francis on behalf of the Royal Society of New Zealand, 2021-01-28)
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 on water quality over the last few decades. We assessed ...
Effects of amendments and fertilization on plant growth, nitrogen and phosphorus availability in rehabilitated highly alkaline bauxite-processing residue sand
(Wiley on behalf of the British Society of Soil Science, 2014-06)
The effects of organic-inorganic amendments and nitrogen-phosphorus (NP) fertilization (NH₄NO₃ plus Ca (H₂PO₄)₂) on ryegrass (Lolium rigidum) growth, and nitrogen (N) and phosphorus (P) availability in highly alkaline ...
Quantifying contaminant losses to water from pastoral landuses in New Zealand I. Development of a spatial framework for assessing losses at a farm scale
(Taylor & Francis on behalf of The Royal Society Te Apārangi, 2021-06-07)
Assessing the effectiveness of mitigation measures for reducing contaminant losses to water from pastoral farming systems is a challenging task. Two important factors that contribute to this challenge are (i) the considerable ...
Does variable rate irrigation decrease nutrient leaching losses from grazed dairy farming?
(Wiley on behalf of the British Society of Soil Science, 2017-12)
The irrigation of grazed dairy pastures can be highly profitable, but can lead to the enhanced leaching of nitrogen (N) and phosphorus (P) and impairment of freshwater quality. A six-year study was conducted to determine ...