Now showing items 31-40 of 127
The spatial distribution and area coverage of urine depositions in grazed pastures in New Zealand
(Lincoln University., 2006)
A study using GPS and GIS technology to make accurate measurements of the spatial distribution and area coverage of urine depositions in grazed dairy and sheep and beef pastures in New Zealand.
Accounting for the utilization of a N₂O mitigation tool in the IPCC inventory methodology for agricultural soils
(Springer Netherlands, 2007)
In this study we review recent studies where dicyandiamide was used as a nitrification inhibitor to reduce both N₂O emissions from urine patches and nitrate leaching from pasture systems, and which led to the development ...
Sowing a winter catch crop can reduce nitrate leaching losses from winter-applied urine under simulated forage grazing: A lysimeter study
(Wiley on behalf of the British Society of Soil Science, 2016-09)
Grazing of winter forage crops is a common management option used in the dairy industry of New Zealand, particularly in the South Island, where they are used to feed nonlactating, pregnant dairy cows prior to calving. ...
Modelling: Effect of feeding plantain pasture to three different breeds of calf/heifer on weight gain and nitrogen leaching in Canterbury
(Taylor and Francis on behalf of the Royal Society of New Zealand, 2020)
Four levels of plantain (0%, 25%, 50% and 75% on DM basis) inclusion rate to ryegrass-clover pasture and three target heifer mature live weights, 444 kg (representing Jersey), 529 kg (Friesian), and 492 kg (cross bred ...
Urine patch detection using LiDAR technology to improve nitrogen use efficiency in grazed pastures
In grazed dairy pastures, the largest N source for both nitrate (NO₃⁻) leaching and nitrous oxide (N₂O) emissions is urine-N excreted by the animals. Additional application of N on urine patches as fertilizer may increase ...
Improvement of degraded soil physical conditions following the establishment of permanent pasture
(Taylor & Francis on behalf of the Royal Society of New Zealand, 2017)
Conventional cultivation practices are known to degrade the physical properties of soils. The objective of this study was to measure changes in soil physical conditions following the establishment of permanent pasture ...
Discovery of a new method to reduce methane emissions from farm dairy effluent
Purpose: The New Zealand Government requires gross emissions of biogenic methane (CH₄) to be reduced to 10% below 2017 levels by 2030. However, the amount of CH₄ emissions reported in the ‘Manure Management’ category of ...
Reducing nitrogen leaching losses in grazed dairy systems using an Italian ryegrass-plantain-white clover forage mix
(Wiley on behalf of the British Grassland Society and the European Grassland Federation, 2018-12)
In grazed agricultural systems, animal urine patches are the major source of nitrogen (N) leaching losses and can cause a decline in water quality. Urine-N rates often exceed plant requirements, and there is a need for ...
Integrating plantain (Plantago lanceolata L.) and Italian ryegrass (Lolium multiflorum Lam.) into New Zealand grazing dairy system: The effect on farm productivity, profitability, and nitrogen losses
(MDPI AG, 2021-02)
A two-year farm system study was conducted at Canterbury, New Zealand to evaluate the effects on farm productivity, profitability, and nitrogen (N) losses of integrating plantain (Plantago lanceolate L.) and Italian ryegrass ...
Confirmation of co-denitrification in grazed grassland
(Nature Publishing Group, 2015-11-30)
Pasture-based livestock systems are often associated with losses of reactive forms of nitrogen (N) to the environment. Research has focused on losses to air and water due to the health, economic and environmental impacts ...