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Dissertations / Theses on the topic 'Water in agriculture'

Author: Grafiati

Published: 4 June 2021

Last updated: 31 July 2024

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1

Gemesi, Zsolt. "Plumbing agricultural landscapes for water quality improvement coexistence of intensive agriculture and good water quality /." [Ames, Iowa : Iowa State University], 2007.

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2

Thiouf, Alassane 1959. "Water management for agriculture in Senegal." Thesis, The University of Arizona, 1987. http://hdl.handle.net/10150/191941.

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Water problems in the Sahel region have lead to a study of water management in one country of the area, Senegal. Farming systems, human resources, and livestock production of the country have been analysed. Natural resources, water, soil, topography, and vegetation have also been studied. The study of the different resource shows the potential of improvement in water management. A specific location in Senegal, Kedougou, is chosen and a water management pilot project is designed. The Gambia river and rainfall are the main sources of water for the project. The project is used for different purpo

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3

Simas, Maria Joao Correia de 1966. "Soil water determination by natural gamma radiation attenuation." Thesis, The University of Arizona, 1993. http://hdl.handle.net/10150/278348.

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The purpose of the study was to determine the soil moisture content by measuring the naturally occurring gamma radiation in the soil. A calibration procedure was developed both in laboratory and in the field. In the laboratory, two different sample sizes were used: three-inch diameter, and 18-inch diameter columns, both 15 cm long. Small size soil samples (three-inch diameter) cannot be used to predict the calibration curve in the field, whereas the larger soil samples (18-inch diameter) calibration may be used to predict the field calibration curve. The prediction limits for the calibration c

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4

Smith, S. Andrew Enticknap. "Water first." Connect to full text, 2002. http://thesis.anu.edu.au/public/adt-ANU20050314.135921/index.html.

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5

Dale, Don. "Saving City Water." College of Agriculture, University of Arizona (Tucson, AZ), 1988. http://hdl.handle.net/10150/295530.

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6

Ketchum, Lynn. "Backyard Water Management." College of Agriculture, University of Arizona (Tucson, AZ), 1988. http://hdl.handle.net/10150/295532.

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7

Kingdon, Lorraine B. "Hot Water Issues." College of Agriculture, University of Arizona (Tucson, AZ), 1988. http://hdl.handle.net/10150/295533.

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8

Kingdon, Lorraine B. "Water Quality Watchdogs." College of Agriculture, University of Arizona (Tucson, AZ), 1988. http://hdl.handle.net/10150/295555.

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9

McCormick, Suzanne. "Air and Water Quality." College of Agriculture, University of Arizona (Tucson, AZ), 1992. http://hdl.handle.net/10150/295707.

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10

Oliveira, Aureo Silva 1965. "Determination of head lettuce crop coefficient and water use in central Arizona." Diss., The University of Arizona, 1998. http://hdl.handle.net/10150/282779.

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The assessment of crop evapotranspiration (ET) has received intensive research due to its critical role in irrigation management and water conservation studies. Because weather conditions largely determine ET, various methods based on meteorological factors have been developed to estimate ET rates. In order to accommodate the concept of reference crop ET (ETo), evaluation of weather data quality has been addressed. In this research, 9 year (1989-1997) weather data from the AZMET weather station at the Maricopa Agricultural Center were used to compare daily and 10 day average ETo estimated by t

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11

Aboeltiyah, Alzway Aiad A. Akhreim. "Water quality problems in irrigated agriculture in Libya." Thesis, University of Glasgow, 2015. http://theses.gla.ac.uk/7091/.

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The Kufra region of south eastern Libya comprises an area about 850 km south to north, and some 500 km wide rising to 450 m above sea level. Rainfall is low and agriculture depends on irrigation. Most of the population of Kufra are private farmers who use flood irrigation from shallow wells (19-60 m), but there are co-operatives of farmers that have shared the cost of deeper wells (120 - 150 m) and sprinkler irrigation. The Kufra Agricultural Project (KAP) state farm is made up of 100 circles (farms) each having its own deep well (220 – 352 m) and rotary sprinkler. The experimental work was co

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12

Kingdon, Lorraine B. "Double Duty for Irrigation Water." College of Agriculture, University of Arizona (Tucson, AZ), 1990. http://hdl.handle.net/10150/295634.

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13

McCoy, Jan. "Treating Waste Water With Weeds." College of Agriculture, University of Arizona (Tucson, AZ), 1990. http://hdl.handle.net/10150/295662.

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14

Törnqvist, Rebecka. "Basin-scale change in water availability and water quality under intensified irrigated agriculture." Doctoral thesis, Stockholms universitet, Institutionen för naturgeografi och kvartärgeologi (INK), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-93214.

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Changes in land use and water use can greatly impact the cycling of water and water-borne substances. Increased redistribution of river water to irrigated fields can cause enhanced evapotranspiration and decreased river discharge. Additionally, the water quality can be affected by the external input of fertilisers and pesticides, and by changed pollutant transport pathways in expansive irrigation canal systems. This thesis examines basin-scale changes in water use, river discharge, water quality and nitrogen (N) loading under conditions of intensified irrigated agriculture, using the Aral Sea

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15

DeJong, David Henry. "The Sword of Damocles: Pima Agriculture, Water Use and Water Rights, 1848-1921." Diss., The University of Arizona, 2007. http://hdl.handle.net/10150/195634.

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This study identifies the historical factors that impacted Pima agriculture, water use and water rights in south-central Arizona between 1848 and 1921. Federal land and resource policies, especially federal Indian policies, impacted the dynamics of Pima agriculture and water use during these crucial years when the federal government utilized economic liberalism to open the West to homesteading and facilitate the development of the region's vast resources.As an agricultural people, the Pima did not passively accept these policies and events. Rather, they proved adaptive, demonstrating their res

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16

Kingdon, Lorraine B. "Havesting Snow In Water Shy Arizona." College of Agriculture, University of Arizona (Tucson, AZ), 1987. http://hdl.handle.net/10150/295539.

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17

Dale, Don. "Harvest The Water, Reap The Rewards." College of Agriculture, University of Arizona (Tucson, AZ), 1988. http://hdl.handle.net/10150/295556.

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18

Zanger, Maggy. "Potential Problems of Treated Waste Water." College of Agriculture, University of Arizona (Tucson, AZ), 1991. http://hdl.handle.net/10150/295692.

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19

Sundin, Caroline, and Nicolina Lindblad. "Water and Agriculture in Uganda : Supporting a CLEW’s assessment." Thesis, KTH, Industriell ekologi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-174878.

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20

Williams, Sarah Elizabeth. "The agriculture-water interface : policy integration and the environment." Thesis, University of Hull, 1997. http://hydra.hull.ac.uk/resources/hull:3490.

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Although current environmental policies may prove successful against narrowly defined criteria of economic, social or environmental sustainability, it is by no means certain that the sustainability of inter-dependent economic and environmental systems will be assured. In fact, policy intervention may result in the displacement of environmental problems to other media, times or places. Farmers are the focus for divergent forces of state, market and social regulation and in consequence their response, or more importantly non-response, to environmental policies cannot be assessed in isolation. Th

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21

Nan, Xi <1992&gt. "Constructed wetlands for water management and reuse in agriculture." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2022. http://amsdottorato.unibo.it/8748/1/Nan_Xi_thesis.pdf.

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Global warming mainly induced by anthropogenic causes has already restricted the increase in agricultural productivity along with aggravating the conflict between water supply and demand. In this context, constructed wetlands (CWs) can be one of nature-based solutions for the treatment and reuse of unconventional wastewater sources. The aim of this research was to evaluate the performance of CWs in wastewater treatment (i.e., agricultural drainage water and domestic wastewater) and to explore the potential of their effluents for agricultural reuse. In order to achieve this goal, the work based

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22

Ingami, Erika <1987&gt. "The Zionist Legacy: Water and Agriculture Management in Israel." Master's Degree Thesis, Università Ca' Foscari Venezia, 2012. http://hdl.handle.net/10579/2005.

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L‘elaborato si prefigge lo scopo di analizzare il legame esistente fra le aspirazioni dei pionieri sionisti, la fondazione dello Stato d’Israele e la politica odierna della gestione delle risorse idriche (con un focus specifico sul ruolo che l’agricoltura aveva e ancora oggi ha nell’economia e nella creazione dello Stato). La tesi prende in esame alcune fasi centrali della storia d’Israele (e ancor prima della comunità ebraica in Palestina) dall’inizio del XX secolo sino ad oggi. Partendo da considerazioni di tipo ideologiche e storiche (la redenzione della terra e il lavoro nei campi) l’elabo

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23

Ouellette, Kayla. "Agriculture, Environmental Restoration and Ecosystem Services: Assessing the Costs of Water Storage on Agricultural Lands in South Florida." Scholar Commons, 2014. https://scholarcommons.usf.edu/etd/5090.

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A large part of the environmental restoration required by the Comprehensive Everglades Restoration Plan calls for more water-storage on lands south of Lake Okeechobee in order to restore the natural water flows of the Everglades watershed. The Everglades Agricultural Area (EAA) can be used for increased water storage in order to relieve coastal estuaries of excess water in the rainy season. This water storage can deliver additional ecosystem services of soil retention and reduced CO2 emissions that could compensate farmers for the cost of water storage by increasing long term farm profitabilit

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24

Arslan, Awadis. "Modeling water quality for soils containing gypsic horizons." Diss., The University of Arizona, 1990. http://hdl.handle.net/10150/185231.

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A computer simulation model was developed to simulate the impact of irrigating soils containing gypsic horizons on soil water quality and percolated water quality. The model simulates saturated - unsaturated solute movement using the mixing cell approach to simulate dispersion and movement of soluble salts. Dissolution and precipitation of slightly soluble salts and the formation of ion pairs is considered as a function of temperature. Van Genuchten closed form equation is used to find soil water retention function. Finite difference method was applied to Richards equation for moisture movemen

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25

McGinley, Susan. "Evaluating Contaminants in Colorado River Water." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2010. http://hdl.handle.net/10150/622078.

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26

Salazar, Moreno Raquel. "Multiple criteria analysis of economic, environmental and water use problems in an irrigation district of Mexico." Diss., The University of Arizona, 2000. http://hdl.handle.net/10150/284229.

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The Alto Rio Lerma Irrigation District (ARLID), located in the state of Guanajuato in Mexico, is an agricultural area whose sustainability depends partially upon groundwater withdrawal for crop irrigation. Because of high pumping demands and current land-management practices, water levels in the regional groundwater aquifers have declined severely, resulting in aquifer overdraft. The potential adverse consequences of this overdraft cannot be overstated, as the long-term economic viability and environmental integrity of the region is threatened. In order to analyze this economic, environmental,

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27

Watson, J., and M. Sheedy. "Crop Water Use Estimates." College of Agriculture, University of Arizona (Tucson, AZ), 1995. http://hdl.handle.net/10150/210312.

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Irrigation scheduling, by keeping track of irrigation applications, soil storage and crop water use, has been computerized by a number of different individuals. A key component of the computerized methods is the estimation of a reference crop evapotranspiration rate. Complaints about one such method, AZSCHED, led the authors to compare the reference crop evapotranspiration values calculated by AZSCHED with those calculated by a second procedure available used by AZMET. Results of the comparison indicated that no significant difference existed between methods, for either a traditionally "long s

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28

Cowley, Robyn Anne. "The effect of changing water distribution from linear to point source on vegetation and soil following piping of an artesian bore in a semi-arid mulga paddock /." [St. Lucia, Qld.], 2001. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16636.pdf.

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29

Nogueira, Saraiva João Paulo Prazeres de Sá. "Implications of water environmental policy for irrigated agriculture in Portugal." Thesis, Imperial College London, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.505302.

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This research develops a bio-economic modelling framework for the assessment of agricultural and water policy change implications for irrigated agriculture. It aims to contribute towards the implementation of the Water Framework Directive within the European Union, particularly in regard to the principles of cost recovery of water services and water demand management for irrigation.

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30

Ji, Xinde. "Essays on the Economics of Climate Change, Water, and Agriculture." Diss., Virginia Tech, 2018. http://hdl.handle.net/10919/84941.

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In an era of global-scale climate change, agricultural production faces a unique challenge due to its reliance on stochastic natural endowments, including temperature, precipitation, and water availability for irrigation. This dissertation presents a series of essays to examine how agricultural producers react and adapt to challenges presented by climate change and scarce irrigation water allocated through the prior appropriation doctrine. The dissertation approaches the problem from three distinct perspectives: institutional differences, climate and water availability, as well as producers' e

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31

Prazeres, de Sa Nogueira Saraiva Joao Paulo. "Implications of water environment policy for irrigated agriculture in Portugal." Thesis, Imperial College London, 2009. http://hdl.handle.net/10044/1/4365.

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This research develops a bio-economic modelling framework for the assessment of agricultural and water policy change implications for irrigated agriculture. It aims to contribute towards the implementation of the Water Framework Directive within the European Union, particularly in regard to the principles of cost recovery of water services and water demand management for irrigation. The bio-economic framework combines local agro-ecological with socio-economic elements, allowing for the introduction of biophysical relationships of irrigated agricultural production into the appraisal of policy i

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32

Hammond, Wagner Courtney Ryder. "Governing Water Quality Limits In Agricultural Watersheds." ScholarWorks @ UVM, 2019. https://scholarworks.uvm.edu/graddis/1062.

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The diffuse runoff of agricultural nutrients, also called agricultural nonpoint source pollution (NPS), is a widespread threat to freshwater resources. Despite decades of research into the processes of eutrophication and agricultural nutrient management, social, economic, and political barriers have slowed progress towards improving water quality. A critical challenge to managing agricultural NPS pollution is motivating landowners to act against their individual farm production incentives in response to distant ecological impacts. The complexity of governing the social-ecological system requir

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33

Kingdon, Lorraine B. "The Central Arizona Project: Water with a Bitter Twist." College of Agriculture, University of Arizona (Tucson, AZ), 1993. http://hdl.handle.net/10150/295716.

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34

Jalilov, Shokhrukh-Mirzo. "Impact of Rogun Dam on Downstream Uzbekistan Agriculture." Thesis, North Dakota State University, 2011. http://hdl.handle.net/10365/16332.

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Strains among the states of Central Asia caused by overuse of the region?s scarce water resources have been increasing in recent years. This is especially true for the relations between Tajikistan, upstream, and Uzbekistan, downstream, on the Amudarya River. Major controversy exists over constructing Rogun Dam on the Vakhsh River, a tributary of the Amudarya River. Construction of Rogun Dam, with a planned height of 335 m (1099 ft), began in 1976 but was stopped in 1991 with the breakup of the former Soviet Union. The intent of this dam is to supply Tajikistan with energy, but a side effect wi

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35

Jones, Michael A. "Systems Modeling and Economic Analysis of Photovoltaic (PV) Powered Water Pumping Brackish Water Desalination for Agriculture." DigitalCommons@USU, 2015. https://digitalcommons.usu.edu/etd/4265.

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Global growing demand for agricultural production has put increased pressure on freshwater resources in various global locations. Many areas have saline groundwater resources which have not been utilized for agriculture due to the economics associated with water pumping and desalination. Limited availability to electricity and high operational costs of diesel generators are major obstacles to utilization of these resources. Reduced costs associated with large-scale renewable energy have renewed interest in understanding the potential impacts of developing distributed photovoltaic (PV) powered

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36

Wang, Shu-Tai. "The Freezing Behavior of Water as Influenced by Ice Cream Stabilizers /." The Ohio State University, 1996. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487935125881971.

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37

Kivumbi, Dorian. "Decision support system for improved irrigation water management." Thesis, University of Southampton, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301207.

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38

Zaikin, Andrey. "Economics of soil and water conservation in irrigated and dry lands agriculture." Online access for everyone, 2006. http://www.dissertations.wsu.edu/Thesis/Summer2006/a%5Fzaikin%5F072606.pdf.

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39

BassiriRad, Hormoz. "Influence of temperature on root water and ion transport and the subsequent effect on shoot water status and growth of barley and sorghum seedlings." Diss., The University of Arizona, 1990. http://hdl.handle.net/10150/185129.

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Short term root temperature treatments between 15 to 40°C at a constant air temperature produced a differential response in shoot growth of barley and sorghum seedlings. Maximum growth rate occurred at 25°C in barley and 35°C in sorghum. The stimulation of growth in barley in the suboptimal temperature ranges (15 to 25°C) was associated with both enhanced L(p) and Jᵢ whereas growth inhibition at elevated temperatures (>25°C) was associated with no changes in L(p), but was accompanied by a severe inhibition of solute fluxes suggesting that supraoptimal temperature inhibition of growth in barley

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40

Uribe-Chavez, Armando. "A numerical model and semi-analytic equations for determining water table elevations and discharges in non-homogeneous subsurface drainage systems." Diss., The University of Arizona, 2001. http://hdl.handle.net/10150/289956.

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A free water surface finite element model was developed. The method was implemented with the Galerkin approach to solve the Laplace equation in the saturated region. It was developed in the object oriented Visual C ++ computer language to permit easy update and drawing of the adaptive mesh. For each time step, the new water table position was calculated based on flux across the water table, a Brooks-Corey equation mass balance for the unsaturated region, and an equation that calculates water table position for the saturated region. An equation was developed to calculate a drainage transfer coe

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41

Costa, Pedroso Rui Miguel [Verfasser]. "Dimensioning Branched Water Distribution Networks for Agriculture / Rui Miguel Costa Pedroso." Bonn : Universitäts- und Landesbibliothek Bonn, 2014. http://d-nb.info/1052101356/34.

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42

Robinson, Allan. "Integrated systems modelling of the interaction between water resources and agriculture." Thesis, Cranfield University, 1999. http://hdl.handle.net/1826/3903.

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Environmental problems associated with the use of water are inherently complex, involving the interaction of several different systems. Further, there is often limited data on the interaction, because of its location between disciplines. In order to study these problems in a quantitative, policy relevant way, a numerical model is required that integrates the different systems and is tailored to contain the processes important to the interaction. A numerical water resource system model is developed to study the problems associated with the interaction between agriculture and water. The model in

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43

Alhassan, Abdulaziz (Abdulaziz Abdulrahman). "Computational design and optimization of infrastructure policy in water and agriculture." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/111500.

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Thesis: S.M., Massachusetts Institute of Technology, Computation for Design and Optimization Program, 2017.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 87-90).<br>Investments in infrastructure tend to be associated with high capital costs, creating a necessity for tools to prioritize and evaluate different infrastructure investment options. This thesis provides a survey of computational tools, and their applicability in fine-tuning infrastructure policy levers, prioritizing among different infrastructure investment options and finding optimal sizing p

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44

Wenhold, FAM, M. Faber, Averbeke W. Van, A. Oelofse, Jaarsveld P. Van, van Rensburg WS Jansen, Heereden I. Van, and R. Slabbert. "Linking smallholder agriculture and water to household food security and nutrition." Water SA, 2007. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1000820.

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Promoting household food security and reducing malnutrition rates of a growing population with the same amount of water is a challenge facing South African nutritionists and agriculturalists alike. Apart from non-food related effects of agriculture in general, the crop and livestock production practices of the South African smallholder farmer may have nutritional implications, primarily when practised on residential land and resulting in home consumption. Yet, few studies have systematically investigated the impact thereof. It appears that crop diversification, gender issues and nutrition educ

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45

Modi, Albert T. "Water status and metabolite changes during seed development and germination in soybean /." The Ohio State University, 2000. http://rave.ohiolink.edu/etdc/view?acc_num=osu1488191667183902.

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46

Li, Qionfang. "An investigation of integrated management of irrigation systems for agriculture and aquaculture." Thesis, University of Newcastle Upon Tyne, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.268373.

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47

Ferguson, John N. "Natural variation of water use and water productivity in Arabidopsis thaliana." Thesis, University of Essex, 2017. http://repository.essex.ac.uk/19554/.

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Plant performance under reduced water availability has traditionally been assessed as drought resistance and more recently as water use efficiency (WUE). An extensive body of work has been established over the past 15 years where the natural variation of water use efficiency has been studied in the model species Arabidopsis thaliana (Arabidopsis). At the same time, a substantial degree of criticism has arisen with respect to the use of drought resistance and WUE as measures of plant performance, due to the lack of relatedness of these parameters to reproductive performance, i.e. yield. The wor

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48

Amer, Saud Abdulaziz. "Spectral response of sweet corn, squash, and beans to nitrogen, zinc and water treatments." Diss., The University of Arizona, 1991. http://hdl.handle.net/10150/298785.

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The study consisted of six experiments conducted to examine the spectral response of different varieties of corn (Zea mays), squash (Cucurbita pepo) and bean (Phaseolus vulgaris) under variable zinc (Zn), nitrogen (N) and water treatments. Five of these experiments were conducted in the greenhouse during 1988 and 1989. The sixth experiment was conducted in the field during the summer of 1989. Ground-based, remotely sensed data were collected over plant canopies during the growing period, using an Exotech Model 100 AX hand-held radiometer. The Exotech offers filter sets which match the thematic

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49

Roth, Robert L., and Byrant R. Gardner. "Asparagus Response to Water and Nitrogen." College of Agriculture, University of Arizona (Tucson, AZ), 1989. http://hdl.handle.net/10150/214273.

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The relationships of asparagus yields to varying levels of water and nitrogen were determined. Maxinuem yields of 345, 560 and 300 crates/acre were produced for asparagus crowns that were 3, 4 and 5 years old, respectively. A total seasonal water depletion rate of 98 inches was calculated for the fern growing season. Optimum nitrogen applications were estimated at approximately 350 -400 lb/ac.

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50

Moolman, Christina Elizabeth. "Modeling the marginal revenue of water in selected agricultural commodities a panel data approach /." Diss., Pretoria : [s.n.], 2005. http://upetd.up.ac.za/thesis/available/etd-09162005-094852.

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