Browsing Doctoral (PhD) Theses by Title

Now showing items 266-285 of 694

Factors affecting nitric oxide and nitrous oxide emissions from grazed pasture urine patches under New Zealand conditions

Khan, Shabana (Lincoln University, 2009)

New Zealand is dominated by its agricultural industry with one of the most intensive farming practices being that of intensive dairying. New Zealand currently has approximately 5.3 million dairy cows that excrete up to 2.2 ...
Factors affecting the performance of farmer companies in Sri Lanka

Rosairo, Hewage S. R. (Lincoln University, Lincoln, Christchurch, 2010)

Sri Lanka introduced farmer companies (FCs) to link smallholders with preferred markets. Many of these farmer-owned marketing firms failed. The twin objectives of this study are to understand the effect of internal factors ...
Factors affecting the response of thrips to an olfactory cue

Nielsen, Mette-Cecilie Krause (Lincoln University, 2013)

Some thrips (Order Thysanoptera) are key pests of many greenhouse and outdoor crops worldwide. Biological attributes such as polyphagy, rapid reproduction, cryptic behaviour and insecticide resistance make them particularly ...
Factors causing feed intake depression in lambs infected by gastrointestinal parasites

Dynes, Robyn A. (Lincoln University, 1993)

A reduction in voluntary feed intake is a major factor in the lost productivity of grazing lambs infected by gastrointestinal parasites yet the mechanisms involved are poorly understood. Potential pathways involved in ...
Factors influencing the occurrence of stinging jellyfish (Physalia spp.) at New Zealand beaches

Pontin, David R. (Lincoln University, Christchurch, 2009)

Individuals of the cnidarian genus Physalia are a common sight at New Zealand beaches and are the primary cause of jellyfish stings to beachgoers each year. The identity of the species and the environmental factors that ...
Factors which affect the fibre output of isolated wool follicles maintained in vitro

Winder, Louise Maree (Lincoln University, 1995)

A technique for growing individual wool follicles in vitro was developed to test the hypothesis that endocrine growth factors are responsible for the regulation of wool growth. Examination of the fibres produced showed ...
The fate of carbon and nitrogen from an organic effluent irrigated onto soil : process studies, model development and testing

Barkle, Gregory Francis (Lincoln University, 2001)

The fate of the carbon and nitrogen in dairy farm effluent (DFE) applied onto soil was investigated through laboratory experiments and field lysimeter studies. They resulted in the development and testing of a complex ...
The fate of lead in soils contaminated with lead shot

Rooney, C. P. (Lincoln University, 2002)

A study of the interactions between lead (Pb) shot and the soil, and the fate of Pb at shooting ranges was conducted in order to address the lack of research on these issues at the current time. Surveys of the spatial and ...
The fate of nitrogen in an animal urine patch as affected by urine nitrogen loading rate and the nitrification inhibitor dicyandiamide

Selbie, Diana (Lincoln University, 2014)

The animal urine patch is the main source of nitrogen (N) loss from agricultural grazed pasture systems. Losses include emissions of nitrous oxide (N₂O), a potent greenhouse gas, and leaching of nitrate (NO3-) into ...
The fate of nitrogen under an animal urine patch

Fraser, Patricia M. (Lincoln University, 1992)

A lysimeter study was conducted to determine the fate of ¹⁵N-labelled urine applied to a pasture soil. The influence of subsoiling upon the fate of the nitrogen was also measured and the accuracy of selected soil nitrogen ...
Fate of urine nitrogen applied to peat and mineral soils from grazed pastures

Clough, Timothy J. (Lincoln University, 1994)

This study has provided fundamental information on the fate of urine nitrogen (N) when applied to pasture soils. In this work the three pasture soils used were a Bruntwood silt loam (BW), an old well-developed (lime and ...
The fate of Vetrazin® (cyromazine) during woolscouring and its effects on the aquatic environment

Robinson, P. W. (Lincoln University, 1995)

A number of ectoparasiticides are used on sheep to protect the animals from ill health associated with infestations of lice and the effects of fly-strike. Most of the compounds currently in use are organophosphate or ...
Feeding behaviour of the European hedgehog (Erinaceus europaeus L.) in a New Zealand pasture

Campbell, Patricia Ann (Lincoln College, University of Canterbury, 1973)

The feeding behaviour of the European hedgehog (Erinaceus europaeus L.) has been investigated in a pastoral environment. Sampling methods that caused the minimum interference to the natural population were used. The relative ...
Field investigations into the fate of fertilizer sulphur added to pasture-soil systems

Gregg, P. E. H. (Lincoln College, University of Canterbury, 1976)

In order to understand, more fully, some of the factors affecting the S requirements of pastures, S³⁵-labelled gypsum fertilizer was applied to several field trials located on soils within the recent, yellow brown earth ...
Field studies of ammonia volatilisation potentials of unsaturated soils fertilised with granular urea

Selvarajah, Nadaraja (Lincoln University, 1991)

The potential for ammonia, NH₃, loss from granular urea applied to soil can be influenced by various soil, environmental and agronomic factors. A series of field studies were conducted to investigate the soil factors ...
Financial theory and the definition of the small business : the role of personal liability as a critical variable in the definition of small business from the perspective of financial management

Newman, Derek L. (Lincoln University, 1996)

The discipline of small business finance is characterised by regular reference to the difficulties perceived in applying theories of finance that were derived from and tested in a world of large businesses. Topics such as ...
Financing environmental sustainability for small landholders in Guatemala: exploring the potential of the carbon banking approach

García-Barrios, Giovanni Fernando (Lincoln University, 2016)

Carbon sequestration through forestry or agro-forestry is an option for reducing carbon dioxide from the atmosphere. Carbon markets have been identified as potentially being an important contributor to slowing deforestation ...
Fiscal policy and macroeconomic variables: the case of Thailand

Mahaphan, Krittin (Lincoln University, 2013)

Fiscal policy in Thailand was expansionary after the 1997 financial crisis until 2002. The public debt rapidly increased from just below 15% of gross domestic product (GDP) in 1996 to 58% in 2000, which is only just below ...
Floral resource subsidies for the enhancement of the biological control of aphids in oilseed rape crops

Varennes, Yann-David (Lincoln University, 2015)

Food production is achieved by the interaction of man-made infrastructures with natural ecosystems, the latter providing soil, light, and regulating services, including biological control. However, such natural capital has ...
Flow and sediment movement in stepped channels

Whittaker, J. G. (Lincoln College, University of Canterbury, 1982)

Laboratory tests were undertaken to establish the formative mechanism for steps and pools in steep mountain streams. They indicated that the formation of steps and pools is associated with high intensity, low return interval ...

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