Now showing items 1-10 of 82
Mitigation of nitrous oxide emissions using a nitrification inhibitor, alternative pasture and forage plants and gibberellic acid
In grazed pastures, nitrous oxide (N₂O), the potent greenhouse gas, is mostly emitted from animal excreta, particularly animal urine-N retuned to the soil during grazing. N₂O is produced in the soil through nitrification ...
¹⁵N recoveries from ruminant urine patches on three forage types
(Springer Verlag on behalf of the Royal Netherlands Society of Agricultural Science, 2017-05-17)
Background and aims: ¹⁵Nitrogen balances are useful tools to increase our understanding of soil N processes and the efficiency of plants in taking up animal urine-N. This study aimed to investigate the effect of forage ...
Ruminant urine patch nitrification and N₂O flux: Effects of urine aucubin rate in a laboratory trial
(Taylor & Francis on behalf of Royal Society of New Zealand, 2019-06-10)
Livestock urine deposition onto grazed New Zealand pastures drives soil nitrous oxide (N₂O) emissions. Urine patch N₂O emissions can be reduced by inhibiting nitrification, a key urine patch nitrogen (N) transformation ...
Cattle diet and winter plant growth effects on nitrogen losses from cattle urine patches
(Springer Nature, 2020-04-01)
Nitrogen (N) losses from agricultural land is a major environmental concern, as N leaching can cause eutrophication and nitrous oxide (N₂O) is a greenhouse gas. A lysimeter experiment was undertaken to investigate the ...
Understanding the mechanisms for the lower nitrous oxide emissions from fodder beet urine compared with kale urine from dairy cows
(Springer Verlag, 2018-01)
Nitrous oxide (N₂O) is a potent greenhouse gas and is produced in the soil by nitrification and denitrification processes. Previous studies have reported apparent lower N₂O emissions from dairy cow urine from fodder beet ...
Automatic measurement of drainage flux and nitrate leaching losses in a heavy clay soil
(Lincoln University, Centre for Soil and Environmental Quality, 2004)
In light of the public concern regarding the expansion of dairy farming in Canterbury the objective of the study was to make accurate measurements of drainage water fluxes and nitrate leaching losses in a heavy clay soirl ...
Improving the sustainability and mitigating environmental impacts of grazed grassland
A poster summarising the authors' research on mitigating NO3 - leaching and N2O emissions from grazed pasture soils using a nitrification inhibitor.
A new method to treat farm dairy effluent to produce clarified water for recycling and to reduce environmental risks from the land application of effluent
(Springer Verlag, 2019-05)
Purpose: There is increasing public concern about the amount of fresh water used on New Zealand dairy farms and the adverse impacts that farm dairy effluent (FDE) has on the environment. FDE mainly consists of fresh water ...
The effect of animal trampling and DCD on ammonia oxidisers, nitrification, and nitrate leaching under simulated winter forage grazing conditions
(Springer Verlag (Germany), 2015-04)
Purpose: Dairy winter forage grazing on free-draining soils is a common practice within the Canterbury region of New Zealand. The high stocking rates involved and the associated deposition of urine onto wet soils during ...
Italian ryegrass swards reduce N leaching via greater N uptake and lower drainage over perennial ryegrass cultivars varying in cool season growth rates
(Taylor & Francis on behalf of the Royal Society of New Zealand, 2018-02-04)
Pasture mitigation strategies are needed to reduce the negative effects of nitrate (NO₃⁻) leaching from intensive pastoral livestock production systems. We explored the capability of pasture grasses with different cool ...