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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 ...
Causes of leaf reddening in subterranean clover cultivars
(Taylor & Francis on behalf of the Royal Society of New Zealand, 2020-04-30)
Subterranean clover (Trifolium subterraneum L.) is an important legume in dryland hill pastures in New Zealand. In this environment plants adapt to low temperatures (<10°C) through a series of physiological mechanisms, ...
Soil phosphorus dynamics and bioavailability in New Zealand forest ecosystems
(Lincoln University, 2013)
Phosphorus (P) is an essential element for all living organisms and the productivity of natural and managed ecosystems is generally limited by the bioavailability of P in soil. Previous studies showed that significant ...
Phosphorus response and efficiency of 12 novel dryland legume species on an acid high country soil
(Fertilizer and Lime Research Centre, Massey University, 2012-02)
High country soils are typically acidic and have low fertility compared with intensive high fertility low land systems. Pasture legumes commonly used in New Zealand perform poorly in these environments. The optimum soil P ...
Identification of growth stage molecular markers in Trichoderma sp. ‘atroviride type B’ and their potential application in monitoring fungal growth and development in soil
(Microbiology Society, 2015-11)
© 2015 The Authors. Several members of the genus Trichoderma are biocontrol agents of soil-borne fungal plant pathogens. The effectiveness of biocontrol agents depends heavily on how they perform in the complex field ...
Effect of different forms of farm dairy effluent, with and without animal urine, on nitrification, denitrification and N₂O emissions : A thesis submitted in partial fulfilment of the requirements for the Degree of Master of Agricultural Science at Lincoln University
(Lincoln University, 2018-03-05)
Nitrous oxide (N₂O) is one of the most important greenhouse gases. Agricultural soils are the largest source of N₂O emissions. In New Zealand, the application of farm dairy effluent (FDE) on pasture soils is the third ...
The fate of urine nitrogen: A grassland lysimeter study in Ireland
(Fertilizer and Lime Research Centre, 2014-02)
In grazed pasture systems, the nitrogen (N) contained in a cattle urine patch may be up to 1200 kg N ha⁻¹. The majority of this N is in excess of plant requirements and is vulnerable to environmental loss. In this study, ...
Liming effects on legume production and phosphorus availability in acid South Island hill and high country soils : A thesis submitted in partial fulfilment of the requirements for the Degree of Doctor of Philosophy at Lincoln University
(Lincoln University, 2019)
There is large potential for widespread development and increased production in South Island hill and high country by increasing legume production. Despite regular past applications of superphosphate fertiliser, current ...
There is no relationship between plasma amino acid concentration and urinary nitrogen concentration in heifers fed plantain or ryegrass
(Taylor & Francis on behalf of the Royal Society of New Zealand, 2020-04-20)
The objective of this study was to investigate the relationship between plasma amino acid (AA) concentration and urinary nitrogen (N) concentration of dairy heifers offered cut plantain or perennial ryegrass-white clover ...
Effects of lime and organic amendments derived from varied source materials on cadmium uptake by potato
(American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, Inc., 2017-07)
Repeated applications of Cd-rich phosphate fertilizers have resulted in elevated concentrations of this toxic element in some New Zealand soils. Exceedance of the food safety standard for Cd (0.1 mg kg⁻¹ fresh weight) has ...