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Showing 10 out of a total of 22 results for collection: Doctoral (PhD) Theses. (1.185 seconds)
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(Lincoln College, University of Canterbury, 1970)Wheat, Triticum aestivum L., because of its importance as a food crop, has been subjected to intensive research throughout the world. In New Zealand wheat research has mainly been confined to the breeding of new varieties with emphasis on yield and qualit ...
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(Lincoln College, University of Canterbury, 1968)Coriaria is the most widespread and vigorous genus of nodulated, nitrogen fixing plants in the native flora of New Zealand. The following study is concerned with the impact that Coriaria, and in particular C. arborea, has on the nitrogen economy of natura ...
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(Lincoln University, 1993)A number of experiments, using both field trial and pot trial techniques, were undertaken to investigate the effect of N addition at high rates on the growth and nutrition of radiata pine. Two field trials were designed to investigate the effect of increa ...
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The interaction of New Zealand native plants with nitrogen in Canterbury’s agricultural landscapes (Lincoln University, 2014)Less than 0.5 % native vegetation cover remains in the productive Canterbury Plains region of New Zealand. Incorporating native plants into agricultural landscapes could provide numerous benefits including shelter, supplementary stock fodder, production o ...
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(Lincoln University, 1990)A series of experiments was carried out on cultivated oat (Avena sativa L. cv Amuri) to examine the efficacies of fluazifop-butyl and glyphosate against water stressed plants, plants grown in low and high nitrogen and plants treated with gibberellic aci ...
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(Lincoln College, University of Canterbury, 1977)Between 1972 and 1976 a series of field experiments were conducted to investigate the factors limiting grain yield in wheat (Triticum aestivum L). Spike population restricted yield when it was below about 500 spikes/m² but once it exceeded 700/m² grain ...
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(Lincoln College, University of Canterbury, 1987)Some aspects of the presence of systemic endophytic fungi in agriculturally important New Zealand grasses were studied in relation to plant breeding. Seedling resistance to adult Argentine stem weevil feeding in perennial ryegrass, Italian ryegrass and ta ...
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(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 models tested. A total of twel ...
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(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 waterways, both of which contribute to ...
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(Lincoln College, University of Canterbury, 1983)Field experiments were conducted at Lincoln College, Canterbury, from 1979-81 to assess the effect of peas (pisum sativum) on subsequent crops and evaluate factors influencing their N-fixing activity. In two trials, spring-sown peas harvested green or ...