Dissertations / Theses on the topic 'Fields of Research – 300000 Agricultural, Veterinary and Environmental Sciences – 300100 Soil and Water Sciences'
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Ford, Colleen D. "The fate of nitrogen in lactose-depleted dairy factory effluent irrigated onto land." Lincoln University, 2008. http://hdl.handle.net/10182/837.
Full textClough, Tim J. "Fate of urine nitrogen applied to peat and mineral soils from grazed pastures." Lincoln University, 1994. http://hdl.handle.net/10182/1030.
Full textBates, Andrew John. "Effects of grazing management and pasture composition on the nitrogen dynamics of a dairy farm : a simulation analysis : a thesis submitted in partial fulfilment of the requirements for the degree of Doctor of Philosophy at Lincoln University /." Diss., Lincoln University, 2009. http://hdl.handle.net/10182/1360.
Full textBlack, Amanda. "Bioavailability of cadmium, copper, nickel and zinc in soils treated with biosolids and metal salts." Lincoln University, 2010. http://hdl.handle.net/10182/1561.
Full textHedley, Carolyn B. "The development of proximal sensing methods for soil mapping and monitoring, and their application to precision irrigation : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Soil Science at Massey University, Palmerston North, New Zealand." Massey University, 2009. http://hdl.handle.net/10179/1217.
Full textKusumo, Bambang Hari. "Development of field techniques to predict soil carbon, soil nitrogen and root density from soil spectral reflectance : a thesis presented in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Soil Science at Massey University, Palmerston North, New Zealand." Massey University, 2009. http://hdl.handle.net/10179/1015.
Full textHarrison-Kirk, T. "The effects of drying and rewetting cycles on carbon and nitrogen dynamics in soils of differing textures and organic matter contents." Lincoln University, 2008. http://hdl.handle.net/10182/656.
Full textCarrick, Sam. "The dynamic interplay of mechanisms governing infiltration into structured and layered soil columns." Lincoln University, 2009. http://hdl.handle.net/10182/1328.
Full textJiang, Shuang. "Bacterial leaching from dairy shed effluent applied to a fine sandy loam under flood and spray irrigations." Lincoln University, 2008. http://hdl.handle.net/10182/668.
Full textBertram, Janet. "Effects of cow urine and its constituents on soil microbial populations and nitrous oxide emissions." Diss., Lincoln University, 2009. http://hdl.handle.net/10182/1334.
Full textMojsilovic, Ognjen. "Estimating bioaccessibility, phytoavailability and phytotoxicity of contaminant arsenic in soils at former sheep dip sites." Lincoln University, 2009. http://hdl.handle.net/10182/1142.
Full textEkanayake, Jagath C. "Soil water movement through swelling soils." Lincoln University, 1990. http://hdl.handle.net/10182/1761.
Full textDennis, S. J. "Nitrate leaching and nitrous oxide emission from grazed grassland: upscaling from lysimeters to farm." Lincoln University, 2009. http://hdl.handle.net/10182/1269.
Full textAlmond, Peter C. "Soils and geomorphology of a lowland rimu forest managed for sustainable timber production." Lincoln University, 1997. http://hdl.handle.net/10182/1782.
Full textBourguignon, Emmanuel. "Ecology and diversity of indigenous Trichoderma species in vegetable cropping systems." Lincoln University, 2008. http://hdl.handle.net/10182/641.
Full textDi, Hong J. "Application of isotopic dilution methods to the study of the dissolution of phosphate fertilisers of differing solubility in the soil." Lincoln University, 1991. http://hdl.handle.net/10182/1792.
Full textScherr, Frank. "Sorption, degradation and transport of estrogens and estrogen sulphates in agricultural soils." Diss., Lincoln University, 2009. http://hdl.handle.net/10182/1017.
Full textTonmukayakul, Nop. "Water use efficiency of six dryland pastures in Canterbury." Lincoln University, 2009. http://hdl.handle.net/10182/1498.
Full textChapman, P. D. "Application of diffusion laws to composting : theory, implications, and experimental testing : a thesis submitted in partial fulfilment of the requirements for the degree of Ph.D. [i.e. Doctor of Philosophy] at Lincoln University /." Diss., Lincoln University, 2008. http://hdl.handle.net/10182/819.
Full textLloyd, Davidson A. "The effect of forest to pasture conversion on soil biological diversity and function." Diss., Lincoln University, 2008. http://hdl.handle.net/10182/711.
Full textStark, Christine H. "Effects of long- and short-term crop management on soil biological properties and nitrogen dynamics." Lincoln University, 2005. http://hdl.handle.net/10182/30.
Full textSteiner, Laure D. "A Study of the fate and transport of estrogenic hormones in dairy effluent applied to pasture soils." Diss., Lincoln University, 2009. http://hdl.handle.net/10182/1306.
Full textKapal, Debbie B. "Influence of a legume green manure crop on barley straw/stubble decomposition, and soil nitrogen retention and availability." Lincoln University, 2008. http://hdl.handle.net/10182/701.
Full textShi, Shengjing. "Influence of root exudates on soil microbial diversity and activity." Lincoln University, 2009. http://hdl.handle.net/10182/1549.
Full textPainter, Brett D. M. "Optimisation of permeable reactive barrier systems for the remediation of contaminated groundwater." Diss., Lincoln University, 2005. http://hdl.handle.net/10182/12.
Full textRobertson, M. S. T. "Riparian management guides : are they meeting the needs of the interested public?" Diss., Lincoln University, 2008. http://hdl.handle.net/10182/601.
Full textDickson, Ross L. "The effect of water stress, nitrogen and gibberellic acid on the phytotoxicity of post-emergent herbicides to Avena spp." Lincoln University, 1990. http://hdl.handle.net/10182/1283.
Full textButler, Tony. "Physiological effects of drought on perennial ryegrass (Lolium perenne L.) and tall fescue (Festuca arundinacea Schreb.)." Lincoln University, 2008. http://hdl.handle.net/10182/1098.
Full textHack, L. A. "Development and validation of the marine benthic copepod Robertsonia propinqua as a bioindicator to monitor estuarine environmental health." Lincoln University, 2008. http://hdl.handle.net/10182/307.
Full textBalasubramaniam, Rengasamy. "The effects of foliar diseases and irrigation on root development, yield and yield components of wheat (Triticum aestivum L.)." Lincoln College, University of Canterbury, 1985. http://hdl.handle.net/10182/1514.
Full textMills, Annamaria. "Understanding constraints to cocksfoot (Dactylis glomerata L.) based pasture production." Phd thesis, Lincoln University. Agriculture and Life Sciences Division, 2007. http://theses.lincoln.ac.nz/public/adt-NZLIU20070717.161658/.
Full textJacometti, Marco Alexander Azon. "Enhancing ecosystem services in vineyards to improve the management of Botrytis cinerea." Phd thesis, Lincoln University. Bio-Protection and Ecology Division, 2007. http://theses.lincoln.ac.nz/public/adt-NZLIU20070126.115223/.
Full textWall, Andrew James. "The effect of poplar stand density on hill country pastures : a thesis submitted in partial fulfilment of the requirements for the degree of Doctor of Philosophy (PhD), Massey University, Palmerston North, New Zealand." 2006. http://hdl.handle.net/10179/1517.
Full textOne-third of the North Island of New Zealand has been identified as requiring increased soil conservation if pastoral farming is to be sustainable. For over 50 years the planting of widely spaced poplar trees (Populus spp.) has been one of the main methods used to control soil erosion on hill pastures. Research has shown that these plantings have successfully decreased soil erosion but their impact on the productivity of pastoral farming has received little research attention. The research that has been undertaken has found poplars can suppress understorey pasture production by up to 40%, suggesting that farmers require more research information on the impact of planting conservation trees on the productivity of their farm if the use of conservation trees is to be more widely adopted on erosion prone land. The objective of this thesis was to provide comprehensive data on the relationship between the range of poplar densities used for soil conservation on the light and soil under poplars, and consequently the effect on understorey pastures. Three field sites on commercial sheep and beef hill farms, in regions with contrasting summer soil moisture availability, Manawatu (one site) and Central Hawke's Bay (two sites), were monitored for two years. Tree stocking rates ranged from 0 to 375 trees/ha. Measurements were based on units of four trees with most measurements either directly below the tree crowns or in the gaps between the trees, but more intensive transect measurements were also made. Photosynthetically active radiation (PAR) and the ratio of red to far red light (R:FR) were measured under the trees and in open pasture controls. Stand density indices used included all the commonly used measures of tree canopies, including digital photography, and stem diameter at breast height (DBH). PAR transmission was inversely related to all of the stand density indices with canopy closure based on digital photographs being the most robust of the indices used. PAR under the trees, relative to open pasture, was greater in the gaps than below tree crowns. Under a completely closed canopy, PAR transmission was reduced to 15-20% and 50-55% of the open pasture in summer and winter, respectively. The RFR under the trees, relative to open pasture, decreased markedly at high stand densities (allowing less than 40% PAR transmission) in summer, but was similar in winter. The change in PAR under the trees was shown to be a major factor limiting pasture growth, particularly directly below the tree crowns. For both summer and winter, canopy closure measured with a standard digital camera was strongly related to stand level PAR transmission (r2=0.88-0.97; P<0.0001) and was also a practical method of measuring canopy closure in the field. The soil measurements confirmed earlier research that soil pH increases under mature poplar trees. There was a 0.2 - 0.7 unit increase in soil pH in the upper 75 mm of soil over both contrasting regions. The soil fertility under the trees in terms of requirements for pasture growth was similar to that of the open pasture with calcium and potassium up to 2.2 and 9.0 quick test units higher in the soil under the trees than in the open pasture, respectively. The direct cause of the increased concentration of some cations under the trees was the annual tree leaf litter. Overall, the soil fertility under the trees had the potential to produce similar pasture production to that of the open pasture with the added advantage of less acid conditions. Averaged over all sites the respective annual net herbage accumulation (ANHA) under poplar canopy closures of 25, 50 and 75 % was estimated from the equations developed to be 77, 60 and 48% of the open pasture. The greatest decrease was directly below the tree crowns where at canopy closures greater than 20% the ANHA was a relatively constant 50% of open pasture. In the vertically projected gap between trees the ANHA decreased by 6.6% relative to open pasture for each 10% increase in canopy closure. At approximately 80% canopy closure there was no difference between the ANHA directly below the trees and in the gap. Pasture net herbage accumulation (NHA) under the trees relative to open pasture was at its lowest in summer and autumn (36% of open pasture under a closed canopy), and at its greatest in early spring before tree canopy leafed out (72% of open pasture under a closed canopy). The botanical composition and feed value of the pasture under the trees was broadly similar to that of the open pasture. The greatest impact of the poplars on the pasture was decreased NHA due to shading. The decrease in NHA directly below mature unpruned poplars is substantial and would decrease farm profitability if the poplar stand density were high over a large area of the farm. The use of poplars for soil conservation is essential but these results show the importance of managing trees through pruning and thinning so that canopy closure is minimised. ANHA under the trees can be maintained at 75% of the open pasture if canopy closure is prevented from exceeding 30-40%.
Castendyk, Devin N. "An interdisciplinary approach to the prediction of pit lake water quality, Martha Mine pit lake, New Zealand." 2005. http://hdl.handle.net/2292/2217.
Full textMurom, Banabas. "Study of nitrogen loss pathways in oil palm (Elaeis guineensis Jacq.) growing agro-ecosystems on volcanic ash soils in Papua New Guinea : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Soil Science at Massey University, Palmerston North, New Zealand." 2007. http://hdl.handle.net/10179/1449.
Full textRavaie, A. Arivin. "Understorey effects on phosphorus fertiliser response of second-rotation Pinus radiata : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Soil Science at Massey University, Palmerston North, New Zealand." 2004. http://hdl.handle.net/10179/1748.
Full textBhandral, Rita. "Nitrous oxide emission from soil under pasture as affected by grazing and effluent irrigation : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy (PhD) in Soil Science at the Massey University, Palmerston North, New Zealand." 2005. http://hdl.handle.net/10179/1600.
Full textShaw, Scott Robert. "Phosphate rock fertilisers to enhance soil P status and P nutrition on organic cropping farms : a thesis presented in partial fulfilment of the requirements for the degree of Master of Plant Science at Massey University." 2009. http://hdl.handle.net/10179/1335.
Full textJames, Trevor Kenneth. "Characterisation of herbicide behaviour in some innovative growing media : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Soil Science at Massey University, Palmerston North, New Zealand." 2008. http://hdl.handle.net/10179/774.
Full textSingh, Jagrati. "The role of inhibitors in mitigating nitrogen losses from cattle urine and nitrogen fertiliser inputs in pastures : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy (Ph. D.) in Soil Science at Massey University, Palmerston North, New Zealand." 2006. http://hdl.handle.net/10179/1483.
Full textCichota, Rogerio. "Modelling sulphate dynamics in soils : the effect of ion-pair adsorption : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Soil Science at Massey University." 2007. http://hdl.handle.net/10179/1443.
Full textLiu, Qianhe. "Rhizosphere processes influencing soil and fertilizer phosphorus availability to Pinus radiata : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Soil Science at Massey University, Palmerston North, New Zealand." 2005. http://hdl.handle.net/10179/1669.
Full textPrasad, Kamal Kishor. "Revegetation of recent soil slips in Manawatu : a thesis presented in partial fulfilment of the requirements for the degree of Master in Applied Science at Massey University." 2009. http://hdl.handle.net/10179/1435.
Full textRoskruge, Nick. "Hokia ki te whenua : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Soil Science at Massey University, Palmerston North, New Zealand." 2007. http://hdl.handle.net/10179/1725.
Full textHoulbrooke, David John. "A study of the quality of artificial drainage under intensive dairy farming and the improved management of farm dairy effluent using 'deferred irrigation' : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Soil Science, Institute of Natural Resources, Massey University, Palmerston North, New Zealand." 2005. http://hdl.handle.net/10179/1665.
Full textRos, Bandeth. "Participatory irrigation management and the factors that influence the success of farmer water use communities : a case study in Cambodia : a dissertation presented in partial fulfilment of the requirements for the degree of Master of Applied Science in Environmental Management at Massey University, New Zealand." 2010. http://hdl.handle.net/10179/1649.
Full textSavitri, Endang. "The use of GIS and remote sensing to identify areas at risk from erosion in Indonesian forests : a case study in central Java : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Natural Resource Management at Massey University, Palmerston North, New Zealand." 2006. http://hdl.handle.net/10179/1506.
Full textAslam, Tehseen. "Investigations on growth and P uptake characteristics of maize and sweet corn as influenced by soil P status : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy (Ph. D.) (Plant & soil science), Institute of Natural Resources, Massey University, Palmerston North, New Zealand." 2005. http://hdl.handle.net/10179/1587.
Full textHussain, Zaker. "Environmental effects of densely planted willow and poplar in a silvopastoral system : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy (Ph. D.) in Agroforestry, Institute of Natural Resources, Massey University, Palmerston North, New Zealand." 2007. http://hdl.handle.net/10179/1405.
Full textJohnson, Catherine Ann. "How to achieve sustainable freshwater use in vineyards, Marlborough : a case study : a thesis presented in partial fulfillment of the requirements for the degree of Master of Resource and Environmental Planning at Massey University." 2010. http://hdl.handle.net/10179/1377.
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