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The interactive effects of nitrogen fertiliser and animal urine on nitrogen efficiency and losses in New Zealand dairy farming systems
(Lincoln University, 2013)
The loss of nitrogen (N) through nitrate (NO₃⁻) leaching and nitrous oxide (N₂O) emissions from pastoral dairy systems is one of the largest challenges facing the New Zealand agricultural industry. Nitrate leaching ...
Microbiological risk assessment of fresh produce grown in Canterbury, New Zealand
(Lincoln University, 2015)
A recent trend to consume healthy foods has led to greater preference for natural food and raw vegetables. At the same time, concerns have increased about the microbiological risks of fresh produce. This thesis focusses ...
Biological farming in New Zealand
(Lincoln University. Faculty of Commerce. Kellogg Rural Leaders Programme., 2010)
This paper discusses the principles, outcomes and benefits of
biological farming in New Zealand. New Zealand agriculture is at
present extremely reliant on petrochemical based fertiliser and
chemicals to produce ...
Soil carbon sequestration
(Lincoln University. Faculty of Commerce. Kellogg Rural Leaders Programme., 2010)
This resource focuses on 'Soil Carbon Sequestration'. Is it possible to sequester carbon in
soils? How? What are the upsides to doing so? Could the carbon sequestered in soils enter the
Emissions Trading Scheme and be ...
Do forests reduce erosion? The answer is not as simple as you may think
(New Zealand Institute of Forestry, 2012-02)
In this article we attempt to reconcile two different perspectives of soil erosion in relation to land cover. From a land-use perspective, there is ample evidence that planting trees reduces erosion; from a geological ...
Nitrous oxide fluxes, soil oxygen, and denitrification potential of urine- and non-urine-treated soil under different irrigation frequencies
(American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, Inc., 2016-07)
© American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America. 5585 Guilford Rd., Madison, WI 53711 USA. All rights reserved. Despite increased use of irrigation to improve forage ...
Impact of nitrogen compounds on fungal and bacterial contributions to codenitrification in a pasture soil
(Springer Nature, 2019-09-16)
Ruminant urine patches on grazed grassland are a significant source of agricultural nitrous oxide (N₂O) emissions. Of the many biotic and abiotic N₂O production mechanisms initiated following urine-urea deposition, ...
Ammonium sorption and ammonia inhibition of nitrite-oxidizing bacteria explain contrasting soil N₂O production
(Macmillan Publishers Limited, part of Springer Nature and the Nature Publishing Group, 2015-07-16)
Better understanding of process controls over nitrous oxide (N₂O) production in urine-impacted 'hot spots' and fertilizer bands is needed to improve mitigation strategies and emission models. Following amendment with bovine ...
Microbial and abiotic controls on mineral-associated organic matter in soil profiles along an ecosystem gradient
(Nature Research, 2019-07-16)
Formation of mineral-organic associations is a key process in the global carbon cycle. Recent concepts propose litter quality-controlled microbial assimilation and direct sorption processes as main factors in transferring ...
High-resolution denitrification kinetics in pasture soils link N₂O emissions to pH, and denitrification to C mineralization
(Public Library of Science (PLoS), 2016-03-18)
Denitrification in pasture soils is mediated by microbial and physicochemical processes leading to nitrogen loss through the emission of N₂O and N₂. It is known that N₂O reduction to N₂ is impaired by low soil pH yet ...