Dissertations / Theses on the topic 'Whole-farm'
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Shockley, Jordan Murphy. "WHOLE FARM MODELING OF PRECISION AGRICULTURE TECHNOLOGIES." UKnowledge, 2010. http://uknowledge.uky.edu/gradschool_diss/105.
Full textAlemu, Aklilu W. "Modelling greenhouse gas emissions in cattle: From rumen to the whole-farm." Elsevier B.V. (Animal Feed Science and Technology), 2011. http://hdl.handle.net/1993/14668.
Full textBhogaraju, Prabhakar V. "A Case-Based Reasoner for Evaluating Crop Rotations in Whole-Farm Planning." Thesis, Virginia Tech, 1996. http://hdl.handle.net/10919/36817.
Full textMaster of Science
Martin, Benjamin A. "TWO ESSAYS ON WHOLE FARM MODELING AND CROP MARKETING IN WESTERN KENTUCKY." UKnowledge, 2018. https://uknowledge.uky.edu/agecon_etds/65.
Full textBailey, Alastair S. "The estimation of input-output coefficients for agriculture from whole farm accounting data." Thesis, University of Reading, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320135.
Full textSorensen, Emily Allyson. "Modeling Whole Farm Systems to Enhance Beginning Small Farmer Success in Southwest Virginia." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/72282.
Full textMaster of Science
Cox, Beverly Gwen. "Impact of Precision Feeding Strategies on Whole Farm Nutrient Balance and Feeding Management." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/32444.
Full textMaster of Science
Abreu, Daniel Carneiro de. "Whole-farm modeling approach to evaluate different crop rotations in organic dairy systems." Universidade Federal de Viçosa, 2014. http://www.locus.ufv.br/handle/123456789/6596.
Full textMade available in DSpace on 2015-11-09T15:34:52Z (GMT). No. of bitstreams: 1 texto completo.pdf: 492609 bytes, checksum: 66747ed601f7421b79e4e7f037a223b9 (MD5) Previous issue date: 2014-09-25
Fundação de Amparo à Pesquisa do Estado de Minas Gerais
O mercado de trigo (Triticum aestivum L.) orgânico para produção de pão cresceu em grande magnitude na região da Nova Inglaterra, nos Estados Unidos. Este nicho de mercado representa uma alternativa de renda para os produtores de leite orgânico abastecerem este mercado através do cultivo e colheita de grãos em rotação de cultura na própria fazenda. Objetivou-se com este estudo determinar a sustentabilidade de oito sequências de rotação de cultura (três anos de rotação) durante o período de 25 anos em uma propriedade produtora de leite orgânica bem manejada. Uma fazenda média foi simulada utilizando o modelo computacional Integrated Farm System Model (versão 3.6) para avaliar o efeito da rotação de cultura no desempenho da cultura, impacto ambiental e rentabilidade. As estratégias de rotação incluíram pasto contínuo (azevém e trigo), milho (Zea mays L.) colhido cedo seguido de trigo de inverno (milho-trigo de inverno- pasto), milho seguido de trigo de primavera (milho-trigo de primavera-pasto), pasto em rotação com trigo de inverno (azevém/trigo - trigo de inverno - azevém/trigo), pasto em rotação com trigo de primavera (azevém/trigo - trigo de primavera - azevém/trigo), soja [Glycine max (L.) Merr.] em rotação por trigo de inverno (soja - trigo de inverno - azevém/trigo) e primavera (soja - trigo de primavera - azevém/trigo), milho em cultivo consecutivo (milho - milho - azevém/trigo) e soja seguida de milho (soja - milho - azevém/trigo). O trigo foi colhido em grão e comercializado a preço premium em todos os anos simulados. Em todas as simulações foram cultivados azevém e trigo (Lolium perenne / Trifolium pratense) consorciados no terceiro ano. Em geral, não houve benefício econômico e ambiental na rotação de cultura em comparação o pasto contínuo (monocultivo). Entretanto, entre as rotações de cultura, o cultivo de trigo de inverno deve ser incentivado, particularmente em rotação com a soja, para reduzir o impacto ambiental e aumentar rentabilidade da fazenda.
The market for high-quality organic bread wheat (Triticum aestivum L.) is increasing in New England. This economic niche represents one alternative income for organic dairy producers (if they include wheat in their crop rotation) to supply this market by raising wheat as a cash crop. Our objective was to determine the sustainability to eight crop rotation sequences of 3-yr rotations in a long-term (25-yr) well-managed organic dairy farm. A medium-sized organic dairy farm was simulated with the Integrated Farm System Model (IFSM, version 3.6) to evaluate crop rotation (management) effects on crop performance, environmental impacts and profitability. The cropping strategies included continuous ryegrass/red clover (continuous grass), corn (Zea mays L.) harvested early followed by winter wheat (corn-wwheat-grass), corn followed by spring wheat (corn-swheat-grass), ryegrass/red clover rotated with winter wheat (grass-wwheat-grass), ryegrass/red clover in rotation with spring wheat (grass-swheat-grass), soybean [Glycine max (L.) Merr.] rotated by both winter wheat (soybean-wwheat-grass) and spring wheat (soybean- swheat-grass), corn double cropped (corn-corn-grass) and soybean followed by corn (soybean- corn-grass). Wheat was harvested as a cash crop in all simulated years and sold at a premium price. All rotations were in long rotation with perennial ryegrass/red clover (Lolium perenne / Trifolium pratense) over the 3-yr. In general, there was no economic and environmental benefit to shifting land from continues grass-based production to specified cropping rotations. However, under crop rotation, use of winter wheat should be encouraged, particularly soybean replaced with cash crop wheat, to reduce environmental impact and improve farm profitability.
White, April Frye. "A Goal Programming Approach to Simultaneously Minimize Whole Farm Ration Cost and Phosphorus Balance." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1593622413223357.
Full textStewart, Brittany Allison. "The Impact of Feed Management Software on Whole-Farm Nutrient Balance on Virginia Dairy Farms." Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/42718.
Full textMaster of Science
Moore, Russell T. "Organic transition schemes for a Morris county Kansas grain farm." Thesis, Manhattan, Kan. : Kansas State University, 2008. http://hdl.handle.net/2097/757.
Full textLong, Sally. "Evaluating farm management strategy using sensitivity and stochastic analysis." Thesis, Kansas State University, 2013. http://hdl.handle.net/2097/19756.
Full textDepartment of Agricultural Economics
Jason Bergtold
The dramatic changes that have taken place in the production agriculture industry in the last decade have the Long Family Partnership wanting to reassess their farm land management strategy. As land owners, they feel as though they might be missing out on profit opportunity by continuing their current lease agreements as status quo. The objective of this research is to determine the optimal land management strategy for the Partnership farm that maximizes net returns for crop production, but also taking into account input costs and risk. Three scenarios were built: (1) a Base Case of the current share-crop and cash lease Agreements; (2) the possibility of farming their own irrigated farm land and continuing to cash lease land used to produce dryland wheat; and (3) deciding to farm all the irrigated and dry land farm acreage themselves. In order to do this, a whole-farm budget spreadsheet model was generated to assess alternative land management scenarios. The difference in net returns between alternative land rental scenarios were then compared and followed by a sensitivity analysis and stochastic analysis using @RISK software. The findings concluded that there was greater potential to increase net farm income while still conservatively managing risk by investing into their own farm land, as not only owners but also as operators. The stochastic and sensitivity analysis confirmed that farming their own land was more sensitive to changes in yields, prices and input expenses. However, even in consideration of the additional risk, the probability of increasing net farm income was greater for the scenarios in which they farmed their own land.
Dickerson, Marla Lashea. "Analysis of farm-to-retail price spreads for whole and two percent milk in seven selected cities." Texas A&M University, 2003. http://hdl.handle.net/1969.1/581.
Full textLopez-Collado, Jose. "A Whole-Farm Planning Decision Support System for Preventive Integrated Pest Management and Nonpoint Source Pollution Control." Diss., Virginia Tech, 1999. http://hdl.handle.net/10919/28831.
Full textPh. D.
Yi, Yue. "Characterization of Salmonella Bacteriophages Isolated from Farm Environments for Use in Decontamination of Liquid Whole Egg." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1566222931949046.
Full textChand, Amita. "On-farm fractionation of milk components." The University of Waikato, 2006. http://hdl.handle.net/10289/2669.
Full textFlorin, Madeleine Jill. "Towards Precision Agriculture for whole farms using a combination of simulation modelling and spatially dense soil and crop information." Thesis, The University of Sydney, 2008. http://hdl.handle.net/2123/3169.
Full textFlorin, Madeleine Jill. "Towards Precision Agriculture for whole farms using a combination of simulation modelling and spatially dense soil and crop information." University of Sydney, 2008. http://hdl.handle.net/2123/3169.
Full textPrecision Agriculture (PA) strives towards holistic production and environmental management. A fundamental research challenge is the continuous expansion of ideas about how PA can contribute to sustainable agriculture. Some associated pragmatic research challenges include quantification of spatio-temporal variation of crop yield; crop growth simulation modelling within a PA context and; evaluating long-term financial and environmental outcomes from site-specific crop management (SSCM). In Chapter 1 literature about managing whole farms with a mind towards sustainability was reviewed. Alternative agricultural systems and concepts including systems thinking, agro-ecology, mosaic farming and PA were investigated. With respect to environmental outcomes it was found that PA research is relatively immature. There is scope to thoroughly evaluate PA from a long-term, whole-farm environmental and financial perspective. Comparatively, the emphasis of PA research on managing spatial variability offers promising and innovative ways forward, particularly in terms of designing new farming systems. It was found that using crop growth simulation modelling in a PA context is potentially very useful. Modelling high-resolution spatial and temporal variability with current simulation models poses a number of immediate research issues. This research focused on three whole farms located in Australia that grow predominantly grains without irrigation. These study sites represent three important grain growing regions within Australia. These are northern NSW, north-east Victoria and South Australia. Note-worthy environmental and climatic differences between these regions such as rainfall timing, soil type and topographic features were outlined in Chapter 2. When considering adoption of SSCM, it is essential to understand the impact of temporal variation on the potential value of managing spatial variation. Quantifying spatiotemporal variation of crop yield serves this purpose; however, this is a conceptually and practically challenging undertaking. A small number of previous studies have found that the magnitude of temporal variation far exceeds that of spatial variation. Chapter 3 of this thesis dealt with existing and new approaches quantifying the relationship between spatial and temporal variability in crop yield. It was found that using pseudo cross variography to obtain spatial and temporal variation ‘equivalents’ is a promising approach to quantitatively comparing spatial and temporal variation. The results from this research indicate that more data in the temporal dimension is required to enable thorough analysis using this approach. This is particularly relevant when questioning the suitability of SSCM. Crop growth simulation modelling offers PA a number of benefits such as the ability to simulate a considerable volume of data in the temporal dimension. A dominant challenge recognised within the PA/modelling literature is the mismatch between the spatial resolution of point-based model output (and therefore input) and the spatial resolution of information demanded by PA. This culminates into questions about the conceptual model underpinning the simulation model and the practicality of using point-based models to simulate spatial variability. iii The ability of point-based models to simulate appropriate spatial and temporal variability of crop yield and the importance of soil available water capacity (AWC) for these simulations were investigated in Chapter 4. The results indicated that simulated spatial variation is low compared to some previously reported spatial variability of real yield data for some climate years. It was found that the structure of spatial yield variation was directly related to the structure of the AWC and interactions between AWC and climate. It is apparent that varying AWC spatially is a reasonable starting point for modelling spatial variation of crop yield. A trade-off between capturing adequate spatio-temporal variation of crop yield and the inclusion of realistically obtainable model inputs is identified. A number of practical solutions to model parameterisation for PA purposes are identified in the literature. A popular approach is to minimise the number of simulations required. Another approach that enables modelling at every desired point across a study area involves taking advantage of high-resolution yield information from a number of years to estimate site-specific soil properties with the inverse use of a crop growth simulation model. Inverse meta-modelling was undertaken in Chapter 5 to estimate AWC on 10- metre grids across each of the study farms. This proved to be an efficient approach to obtaining high-resolution AWC information at the spatial extent of whole farms. The AWC estimates proved useful for yield prediction using simple linear regression as opposed to application within a complex crop growth simulation model. The ability of point-based models to simulate spatial variation was re-visited in Chapter 6 with respect to the exclusion of lateral water movement. The addition of a topographic component into the simple point-based yield prediction models substantially improved yield predictions. The value of these additions was interpreted using coefficients of determination and comparing variograms for each of the yield prediction components. A result consistent with the preceding chapter is the importance of further validating the yield prediction models with further yield data when it becomes available. Finally, some whole-farm management scenarios using SSCM were synthesised in Chapter 7. A framework that enables evaluation of the long-term (50 years) farm outcomes soil carbon sequestration, nitrogen leaching and crop yield was established. The suitability of SSCM across whole-farms over the long term was investigated and it was found that the suitability of SSCM is confined to certain fields. This analysis also enabled identification of parts of the farms that are the least financially and environmentally viable. SSCM in conjunction with other PA management strategies is identified as a promising approach to long-term and whole-farm integrated management.
Kayrouz, Benjamin Michael. "PRECISION AGRICULTURE: REALIZING INCREASED PROFIT AND REDUCED RISK THROUGH COST MAP AND LIGHTBAR ADOPTION." Lexington, Ky. : [University of Kentucky Libraries], 2008. http://hdl.handle.net/10225/875.
Full textTitle from document title page (viewed on November 3, 2008). Document formatted into pages; contains: ix, 58 p. : ill. (some col.). Includes abstract and vita. Includes bibliographical references (p. 55-57).
Allison, John T. Jr. "TWO ESSAYS ON INPUT SUBSTITUTION AND OPTIMAL DECISION MAKING IN CROP AND LIVESTOCK PRODUCTION SYSTEMS." UKnowledge, 2019. https://uknowledge.uky.edu/agecon_etds/80.
Full textNi, Guiyan Verfasser], Henner [Akademischer Betreuer] [Simianer, Jörn [Akademischer Betreuer] Bennewitz, and Christoph [Akademischer Betreuer] Knorr. "Genomic selection in farm animals: accuracy of prediction and applications with imputed whole-genome sequencing data in chicken / Guiyan Ni. Betreuer: Henner Simianer. Gutachter: Henner Simianer ; Jörn Bennewitz ; Christoph Knorr." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2016. http://d-nb.info/1093193212/34.
Full textRömer, Desiree A. M. "The development and use of least-cost-ration formulation sub-models integrated into a farm-planning model to assess the economics of feeding whole crop cereals and other alternatives to grass to dairy cows." Thesis, University of Reading, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365380.
Full textMurray, Helene. "Whole farm case studies : a how-to guide." Thesis, 1993. http://hdl.handle.net/1957/35633.
Full textGraduation date: 1994
Nimmo, Jeffrey. "Whole Farm Nutrient Budgets of Two Dairy Farms in Atlantic Canada." 2011. http://hdl.handle.net/10222/14330.
Full textFisher, Derek Randall. "Whole-farm nutrient budgeting estimating nutrient balance and identifying strategies for improvement /." 1998. http://catalog.hathitrust.org/api/volumes/oclc/39543500.html.
Full textTypescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 83-93).
"Economics of greenhouse gas mitigation scenarios in beef production." Thesis, 2014. http://hdl.handle.net/10388/ETD-2014-09-1789.
Full textNi, Guiyan. "Genomic selection in farm animals: accuracy of prediction and applications with imputed whole-genome sequencing data in chicken." Doctoral thesis, 2016. http://hdl.handle.net/11858/00-1735-0000-0028-86FE-4.
Full textVazquez, Yañez Orlando Pablo. "Evaluation and application of computer modeling to dairy grazing systems pasture intake, pasture selection and whole farm economic evaluation /." 1997. http://catalog.hathitrust.org/api/volumes/oclc/39338268.html.
Full textZbeetnoff, Darrell M. "Considering production risk and whole farm risk in identifying the optimal rate of nitrogen fertilization in field crop production." 1990. http://hdl.handle.net/1993/17259.
Full textMann, V. "Using insect biodiversity to measure the effectiveness of on-farm restoration plantings." Thesis, 2013. https://eprints.utas.edu.au/17487/1/Whole-_thesis.pdf.
Full textKeeley, NB. "Quantifying and predicting benthic enrichment : lessons learnt from southern temperate aquaculture systems." Thesis, 2013. https://eprints.utas.edu.au/17529/4/Whole-Keeley-_thesis-inc-pub-mat.pdf.
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