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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 128 for “"Fertiliser"”.
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Refinement of a Fertiliser-producing Urinal
… that can make an essential contribution to fertiliser manufacturing, and thus to agriculture and food sustainability. Waste streams essentially become resources. This research investigated ways in which a novel fertiliser-producing urinal makes this possible. The most nutrient-rich portion …
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A marketing strategy for upcoming fertiliser businesses
… this industry are commercial farmers that need fertilisers on a daily basis to cultivate the needed crops for both human and animal consumption. The fertiliser market in South Africa is already saturated with no real growth in national sales figures in past years. Therefore fertiliser businesses …
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Sheep wool pellets as slow-releasing nitrogen fertiliser
Þessi rannsókn kannaði virkni íslenskra sauðfjárullar sem sjálfbærs valkosts við hæga losun á köfnunarefnisáburði til að bæta jarðvegseiginleika og einnig vöxt og uppskeru nytjaplantna. Rannsóknin var framkvæmd bæði í gróðurhúsi (með því að nota ófrjósaman mó- og vikurjarðveg) og á akri (með histic …
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The construction, irrigation and fertiliser nutrition of UK golf greens
… three levels of irrigation, five of nitrogen fertiliser and two of phosphate. The trial was maintained as a golf green, and artificial wear was applied. Soil moisture deficit predictions by the Meteorological Office conformed with measurements from the soil construction, but the sand-based …
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Ammonia emission from fertiliser application : quantification techniques and mitigation strategies
… systems. The development and use of synthetic fertilisers has been one of the responses to this need. Nitrogen (N) losses from agriculture can be up to 70% of the fertiliser N applied, depending on management practices, climate and soil conditions. Besides the decreased effectiveness of the …
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Nitrophosphate as an alternative phosphate fertiliser for acidic sandy soils
… ammonium (NH4+) as pre-plant (before planting) fertilisers in the Free State, Mpumalanga and North West where farmers apply monoammonium phosphate (MAP(33)) together with urea before planting. However, MAP(33) a source of phosphorous (P), which is pre-applied resulted in soil acidification, the …
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The profitability of nitrogen fertiliser usage on Canterbury irrigated sheep farms
The profitability of nitrogen usage on Canterbury irrigated sheep farms was investigated using a deterministic feed budget model. Effects of nitrogen usage on stocking rate and animal performance was determined. Current prices were used to determine profitability using partial budget analysis. …
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Soil properties, lime and phosphorus fertiliser management affecting grass production in Ireland
… its remaining lifespan. In Ireland current P fertiliser recommendations do not account for soil type differences, but large differences in fertiliser P responses can exist across differing soil types. The use of this one size fits all P fertiliser recommendation system can result in the …
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A systems approach to the economic evaluation of nitrogen fertiliser use in sheep farming enterprises
… to evaluate the economic use of nitrogen fertiliser in sheep farming enterprises which depend on seasonal production of grass-legume pastures as the main source of feed. Nitrogen fertiliser has not been widely used in grass-legume based pastoral systems. These farming systems have instead …
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Strategic applications of nitrogen fertiliser to increase the yield and nitrogen use efficiency of wheat.
… the effect of delayed applications of nitrogen fertiliser on nitrogen use efficiency (NUE) to dryland wheat. Treatments were applied to manipulate the crop canopy and to measure the balance between canopy size and structure and crop nitrogen uptake. In both seasons and sites significant (P<0.05) …
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Influence of politics on the budgeting process : a study of the fertiliser manufacturing industry in Indonesia
… of politics on the budgeting process within the fertiliser manufacturing industry in Indonesia. Prior budgeting studies have focused on one of the following three theoretical frameworks - economic, psychological, and social. This study expands the research corpus by assessing the effect of …
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Distribution of nematodes in pasture soil across seasons and in combination with plant species and fertiliser application
… pastoral land use has increased with the use of fertilisers and the selection of highly productive pasture plant species to increase pasture production. When choosing a ryegrass cultivar infected with selected endophyte fungus, ploidy choices are vital for determining pasture production. Modern …
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Maximising the benefits of cover crops through optimising the use of rotations, nitrogen fertiliser and organic manures
… in the region of Northern Ireland as a biofertiliser that improves soil fertility whilst contributing to the long-term enhancement of soil health. <br/><br/>Amendments to agricultural policy to subsidise cover cropping would increase their use whilst helping to achieve greater agricultural …
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Phosphorus speciation, agronomic performance and soil nutrient testing for waste recovered fertiliser use in Northern Irish soil
… of the status of P in NI is needed. <br/><br/>Fertiliser P used in agriculture is derived from non-renewable rock phosphate resources, or else from organic fertilisers such as manure, bio-solids and compost. Globally, the demand for fertiliser P is increasing by 400,000 tonnes per year and only …
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Effect of urinary nitrogen, dairy shed effluent and nitrogen fertiliser on nitrate leaching from a pasture soil
… solely on single nitrogen (N) sources (e.g. fertiliser. urine, dung or effluent). Under grazed pasture, however, more than one N source is usually returned to the system either directly or indirectly. Therefore it is important to improve our knowledge and understanding of the concentrations, …
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The effect of aeration and aerator design on the physical, chemical and fertiliser quality of cattle slurry
… would offset some of the cost for inorganic fertiliser.
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Effect of replacing nitrogen fertiliser with gibberellic acid on response of perennial ryegrass and white clover pasture : A thesis submitted in partial fulfilment of the requirements for the Degree of Doctor of Philosophy at Lincoln University
… allowed to use high rates of nitrogen (N)-based fertiliser to achieve maximum pasture production due to the associated losses of N through nitrate leaching and nitrous oxide emissions. Gibberellic acid (GA), a naturally occuring phytohormone, has shown in short term studies, to increase, then …
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The effect of depth of placement of phosphorus fertiliser on the growth and development of field peas / by Mohammadali H. Derafshi.
… of all the experiments suggest that placing P fertiliser 4-5 cm below the seed of field pea crops will be beneficial in terms of nodulation, P uptake, grain yield and grain P concentration.
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The impact and the efficiency of the fertilizer support programme(FSP) on food security among small scale farmers in rural Zambia-A case study of Chongwe District
Despite the implementation of the Fertiliser Support Programme (FSP), there were indications of food insecurity continuing among small-scale farmers in rural Zambia during the 2006/2007 farming season. The FSP was introduced by the Zambian government in 2002 under the Poverty Reduction Strategy …
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