Now showing items 1-10 of 26
The effect of DCD on nitrogen losses from sheep urine patches applied to lysimeters in autumn
(New Zealand Grassland Association, 2010)
The intensification of modern pastoral agriculture has increased the risk of environmental degradation. The use of nitrification inhibitor technology has been shown to reduce nitrate (NO₃ ⁻) leaching losses and nitrous ...
The effectiveness of nitrification inhibitor technology to improve the sustainability of agriculture
(NZ Institute of Primary Industry Management (NZIPIM), 2009-12)
As reported widely in the general media and also in recent editions of Primary Industry Management, there is increasing recognition of the need to improve the sustainability of New Zealand agricultural systems. Fonterra’s ...
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 ...
Nitrogen fertilizer and urine patch interaction-use of APSIM to aid experimental design
(Fertilizer and Lime Research Centre, Massey University, 2011-02)
Previous studies have shown that leaching losses from pasture-based systems occurs predominantly from urine deposited by grazing animals, but also following fertiliser application. However, there is limited understanding ...
Dicyandiamide (DCD) reduces nitrate losses from Irish soils
(International Union of Soil Science, 2010-08)
Nitrate leaching is a concern for both environmental and public health reasons. Because of this European farmers are being increasingly regulated to reduce nitrate losses. Dicyandiamide (DCD) has been shown to reduce nitrate ...
The potential role of the nitrification inhibitor DCD for reducing nitrate leaching from grazed grassland
(Agricultural Research Forum 2008., 2008-03)
The objective of this lysimeter experiment was to assess the effect of DCD (dicyandiamide), a commercially used nitrification inhibitor, on nitrate leaching from Irish grassland soils after urine and fertiliser applications.
Nitrate leaching and nitrous oxide emissions related to bacteria and not to archaea in nitrogen rich grassland soils
(International Union of Soil Sciences, 2010-08)
The oxidation of ammonia (NH₃) to nitrate (NO₃⁻) is a key process in the global nitrogen (N) cycle which has major ecological and environmental implications both in influencing nitrous oxide (N₂O) emissions and NO₃⁻ leaching. ...
Relationship between microbial community properties and nitrogen mineralisation in soils after amendment with two forms of nitrogen
Microbial diversity in soils is considered important for maintaining sustainability of agricultural production systems. However, the links between microbial diversity and ecosystem processes are not well understood. This ...
Use of geostatistics in designing sampling strategies for soil survey
(Soil Science Society of America, 1989)
Semivariograms are used to quantitatively assess spatial variability of depth to mottles, depth to gravels, and thickness of loamy sand and/or coarser-textured layers, which are definitive criteria for classification of ...
A synergistic mitigation technology for nitrate leaching and nitrous oxide emissions for pastoral agriculture
(International Nitrogen Workshop 2012., 2012)
In grazed grassland, most of the nitrate (NO3-) leaching and nitrous oxide (N2O) emissions come from the animal urine-N returned to the pasture by the animal during outdoor grazing (Di and Cameron, 2002a). The N loading ...