Now showing items 31-40 of 139
Reducing nitrate leaching losses from a Taupo pumice soil using a nitrification inhibitor eco-n
(New Zealand Grassland Association, 2007-11)
The decline in water quality in Lake Taupo has been attributed to nitrogen (N) leaching from surrounding land areas. Pastoral agriculture has been identified as a significant contributor to this N transfer to the lake ...
Nitrogen: is it a SIDE issue?
(South Island Dairy Event (SIDE), 2003)
Dairy farming has borne the brunt of recent public criticism from anglers and others regarding the desire we all share to keep our country green and our rivers and lakes clear. Much of the focus has been on nitrogen and ...
Environmental research on the new Lincoln University dairy farm
(South Island Dairy Event (SIDE)., 2002)
A major challenge to the New Zealand’s growing dairy industry is to achieve an annual productivity gain of 4% in order to remain internationally competitive. However, it is important to ensure that this productivity gain ...
Urine patch area coverage of an intensively stocked dairy pasture
(Lincoln University., 2010-08)
The objective of this study was to develop a new method to quantify seasonal and annual urine patch area coverage under an intensive dairy farming system.
Effect of soil moisture status and animal treading on N₂O emissions and the effectiveness of a nitrification inhibitor mitigation technology
(New South Wales Department of Primary Industry, 2013-09)
Nitrous oxide (N₂O) is a potent greenhouse gas with a long term global warming potential about 298 times that of carbon dioxide (CO₂). In grazed grassland, most of the N₂O is emitted from nitrogen (N) excreted by the grazing ...
Effects of trampling of a wet dairy pasture soil on nitrous oxide emissions and the efficacy of a nitrification inhibitor, dicyandiamide.
Nitrous oxide (N2O) emitted from urine patches in grazed dairy pastures is a major contributor to the total greenhouse gas emissions in New Zealand. The nitrification inhibitor dicyandiamide (DCD) has been shown to reduce ...
Inhibition of ammonia oxidisers to control nitrification rate under simulated winter dairy forage grazing conditions: An incubation study
(Fertilizer and Lime Research Centre, 2013)
The microbial process of nitrification plays a key role within the soil nitrogen cycle. Nitrification is the process where ammonia is oxidised to nitrite and then to nitrate and this process can have major negative ...
Dry matter intake and body condition score change of dairy cows grazing fodder beet, kale and kale-oat forage systems in winter
Crop dry matter (DM) yield, DM utilisation and body condition score (BCS) of dairy cows were measured over two winters on an irrigated stony, free-draining Balmoral soil for three crop grazing systems: fodder beet (FB); ...
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 ...
Effects of nitrogen application rate and a nitrification inhibitor dicyandiamide on ammonia oxidizers and N₂O emissions in a grazed pasture soil
(Elsevier B.V., 2013-11-01)
Ammonia oxidizers, including ammonia oxidizing bacteria (AOB) and ammonia oxidizing archaea (AOA) are important drivers of a key step of the nitrogen cycle — nitrification, which affects the production of the potent ...