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Application Of A Mixed Integer Programming Model To Determine Optimal Irrigation Management Strategies Under Conditions Of Limited Water Supplies
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Book Synopsis Application of a Mixed Integer Programming Model to Determine Optimal Irrigation Management Strategies Under Conditions of Limited Water Supplies by : Joseph Shannon Neibergs
Download or read book Application of a Mixed Integer Programming Model to Determine Optimal Irrigation Management Strategies Under Conditions of Limited Water Supplies written by Joseph Shannon Neibergs and published by . This book was released on 1987 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Optimal Irrigation Management by : Charles Carter Hillyer
Download or read book Optimal Irrigation Management written by Charles Carter Hillyer and published by . This book was released on 2011 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many regions in North America are experiencing water shortages, and these conditions are expected to worsen. The next generation of irrigation scheduling applications must therefore be capable of providing operational advice in support of deficit irrigation strategies. However, the theoretical, technical, and practical challenges associated with deficit irrigation scheduling are far more complex than conventional (full) irrigation. This dissertation presents three distinct systems for addressing the analytical challenges of deficit irrigation management. The first section of the dissertation presents a simulation framework for agro-ecological simulation. The objective was to develop a method to enable the assembly of simulation models from previously and independently developed component models. Based on a requirements analysis of existing simulation models we developed the ModCom simulation framework. ModCom provides a set of interface specifications that describe components in a simulation. ModCom also provides implementations of the core simulation services. The framework interfaces use well-defined binary standards and allows developers to implement the interfaces using a broad range of computer languages. The Second section describes the Irrigation Efficiency Model (IEM). IEM explicitly analyzes irrigation efficiency, accounts for spatial variability of soil properties and irrigation uniformity, performs simultaneous scheduling for all fields in the farm, accounts for energy use and its associated costs, and uses both ET and soil moisture measurements to enhance the accuracy of the irrigation schedules. IEM was developed specifically for implementing Deficit Irrigation and therefore includes analyses that go beyond the requirements of conventional irrigation scheduling. The third section describes Irrigation Management Online (IMO), a web application for optimum irrigation management. This system uses IEM to generate and deliver irrigation scheduling recommendations. IMO has been developed specifically to support irrigation management when either water supplies or delivery system capacities are limited. To mitigate the complexities of irrigation constraints the system has been designed so that the irrigation manager is an integral part of the irrigation optimization procedure. The final section outlines some of the key challenges that the next generation of schedulers must overcome in order to meet the needs of agricultural irrigation in an increasingly water short future. In addition, this section will discuss how irrigation advisory programs will need to operate differently in terms of what they do and how they do it.
Book Synopsis Selected Water Resources Abstracts by :
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1974 with total page 866 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Optimal Irrigation Management Under Conditions of Limited Water Supply in the Jordan Valley by : Hussein Al-Qudah
Download or read book Optimal Irrigation Management Under Conditions of Limited Water Supply in the Jordan Valley written by Hussein Al-Qudah and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mathematical Optimization of Water Networks by : Alexander Martin
Download or read book Mathematical Optimization of Water Networks written by Alexander Martin and published by Birkhäuser. This book was released on 2012-07-01 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water supply- and drainage systems and mixed water channel systems are networks whose high dynamic is determined and/or affected by consumer habits on drinking water on the one hand and by climate conditions, in particular rainfall, on the other hand. According to their size, water networks consist of hundreds or thousands of system elements. Moreover, different types of decisions (continuous and discrete) have to be taken in the water management. The networks have to be optimized in terms of topology and operation by targeting a variety of criteria. Criteria may for example be economic, social or ecological ones and may compete with each other. The development of complex model systems and their use for deriving optimal decisions in water management is taking place at a rapid pace. Simulation and optimization methods originating in Operations Research have been used for several decades; usually with very limited direct cooperation with applied mathematics. The research presented here aims at bridging this gap, thereby opening up space for synergies and innovation. It is directly applicable for relevant practical problems and has been carried out in cooperation with utility and dumping companies, infrastructure providers and planning offices. A close and direct connection to the practice of water management has been established by involving application-oriented know-how from the field of civil engineering. On the mathematical side all necessary disciplines were involved, including mixed-integer optimization, multi-objective and facility location optimization, numerics for cross-linked dynamic transportation systems and optimization as well as control of hybrid systems. Most of the presented research has been supported by the joint project „Discret-continuous optimization of dynamic water systems“ of the federal ministry of education and research (BMBF).
Book Synopsis Optimal Irrigation Decisions with Limited Water by : Herbert Gregory Blank
Download or read book Optimal Irrigation Decisions with Limited Water written by Herbert Gregory Blank and published by . This book was released on 1975 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: A multiple crop irrigation planning model was developed to determine crop acreages and irrigation timings and amounts under two objectives. The objectives were maximization of expected return and minimization of variance due to random precipitacion. The model is applied to a representative farm in the irrigated area near Ft. Morgan, Colorado. Recent experimental data from field trials on corn at colorado State University were used. An evapotranspiration ET prediction model was developed which reconstruced soil moisture over the season for varying irrigation treatments. Regression analysis was used to determine parameters in production functions relating ET in various time periods to yields. An additive and a multiplicative relation were tested. A dynamic programming model was developed which determined optimal amounts of irrigation at pre-scheduled times for a single crop. The adopted ET prediction model and first the multiplicative and then the additive production function were incorporated into this program. Initiallys the problem is solved with unlimited water available at a pre-determined price. The model is solved again with waater limited in various time periods. The results of this program simulate the situation when the crop competes with other crops for the limeted water supply. Secondary datea were used to determine timings and amounts of irrigation water for various production levels of the other crops considered in the study. The multiple crop case incorporates the results of the single crop model.(...).
Book Synopsis Modelling and Management of Irrigation System by : Juan Antonio Rodríguez Díaz
Download or read book Modelling and Management of Irrigation System written by Juan Antonio Rodríguez Díaz and published by MDPI. This book was released on 2020-04-30 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: Irrigation is becoming an activity of precision, where combining information collected from various sources is necessary to optimally manage resources. New management strategies, such as big data techniques, sensors, artificial intelligence, unmanned aerial vehicles (UAV), and new technologies in general, are becoming more relevant every day. As such, modeling techniques, both at the water distribution network and the farm levels, will be essential to gather information from various sources and offer useful recommendations for decision-making processes. In this book, 10 high quality papers were selected that cover a wide range of issues that are relevant to the different aspects related to irrigation management: water source and distribution network, plot irrigation systems, and crop water management.
Book Synopsis Optimal Irrigation Scheduling Combining Water Content Sensors and Remote Sensing Data by : Mireia Fontanet i Ambròs
Download or read book Optimal Irrigation Scheduling Combining Water Content Sensors and Remote Sensing Data written by Mireia Fontanet i Ambròs and published by . This book was released on 2020 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: By 2025, the Food and Agriculture Organization of the United Nations predicts that two-thirds of the world population will experience water stress conditions. In addition, it is expected that world population will increase significantly during the following years. Agriculture is the largest consumer of fresh water, estimated 75%. The optimization of its use is therefore crucial for future. The main objective of irrigation scheduling is to guarantee maximum crop yield while saving significant amounts of water. The main difficulty to determine a correct and optimal irrigation scheduling strategy is due to complexity and variability of the Soil-Plant-Atmosphere continuum. In each field site, this continuous SPA has different patterns as a consequence of environmental conditions, crop, soil hydraulic properties and soil tillage. Several tools and methodologies are employed nowadays to monitor an improve irrigation scheduling. However, they all have advantages and limitations, or, each one is used without considering the information provided by the others, simplifying the system and avoiding information. This thesis aims to improve irrigation scheduling by combining different tools available at the present time. This combination aims to answer different kind of questions when irrigation scheduling in a field site must be defined. For this, each tool has been used and supported by others. In addition, this thesis will discuss when and how these tools might be employed. Firstly, we compare different tools and methodologies used to measure water content in an agriculture field. Specifically, we compared gravimetric measurements and water content sensors measurements with DISPATCH algorithm data. This algorithm is one of several algorithms who estimates soil surface water content using remote sensing data. The main goal was determining if remote sensing data can improve water content data measured by sensors. We found that DISPATCH algorithm is no capable to improve water content sensors measurements. Secondly, we present a methodology where a simulation-optimization problem is solved in order to find an optimal irrigation scheduling strategy. This strategy might guarantee the maximum economic net margin. This methodology has been applied in a real field. The optimal irrigation scheduling of this field is compared with the traditional irrigation scheduling method, based water requirements. Results show that even though the traditional method supplies the volume of water evapotranspired, this methodology of scheduling irrigation is not enough to avoid crop water stress, compromising final crop yield. In this case, optimal irrigation strategy improves the final net margin in comparison the traditional method. We demonstrate that depending on soil properties, optimal irrigation scheduling is different. Thirdly, we improved the irrigation scheduling in a field site where irrigation was applied with the same criteria. In this part of the thesis we employed NDVI remote sensing data, water content sensors and simulation models to determine the optimal irrigation. The improvement is based on management zones delineation with NDVI data. In this case, water content sensors are used to define if each management zone presents different water content patterns and to verify that when the field is divided into different management zones there is a gain in terms of water content uniformity. Finally, an optimal irrigation scheduling calendar is proposed to allow the consultants to take within-season irrigation decisions. Results show that management zones are dynamic during the growing season and the optimal irrigation scheduling might also be dynamic. In addition, we found that the uniform irrigation applied in the entire field, without considering the possible differences in soil properties, produced waterlogging in two management zones, therefore, transpiration decreases in comparison to the others.
Book Synopsis MIXED INTEGER PROGRAMMING MODELS FOR WATER RESOURCES MANAGEMENT by : Brad Finney
Download or read book MIXED INTEGER PROGRAMMING MODELS FOR WATER RESOURCES MANAGEMENT written by Brad Finney and published by . This book was released on 1977 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Extensions of Mathematical Programming for Regional Water Quality Management by : Glenn William Graves
Download or read book Extensions of Mathematical Programming for Regional Water Quality Management written by Glenn William Graves and published by . This book was released on 1972 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of the research was to develop a general practical planning tool to provide optimal solutions for the complex choices involved in balancing alternative methods for attaining water quality goals. Extended is the earlier work, 'Mathematical Programming for Regional Water Quality Management'. A mixed integer, continuous variable non-linear programming model is developed which promises to be much more realistic and effective in selecting an optimal configuration of regional treatment plants and pipe juncture nodes. A new Bender's type decomposition for the non-linear model is also presented as an appropriate and feasible solution technique. The dissolved oxygen profile and the control options were linked. The work shows how the transfer coefficients can be recalculated periodically in the course of the system optimization. The theoretical framework for including two additional treatment methods, mechanical re-aeration and flow augmentation via reservoirs is also developed.
Book Synopsis Mixed Integer Programming Model for Optimal Operation of the Durham, North Carolina Water Reservoir System by : Philip Fragapane
Download or read book Mixed Integer Programming Model for Optimal Operation of the Durham, North Carolina Water Reservoir System written by Philip Fragapane and published by . This book was released on 1996 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Durham, North Carolina water reservoir system is a complicated system of two raw water reservoirs in independent watersheds, four main pumping stations, many pumps of three different types, and two treatment plants, each with terminal reservoirs. The reservoir systems meets an average water demand of about 25 million gallons per day. Optimal operation of the system is to meet system demands for treated water, while minimizing operating costs. Because of the many decisions involved in the operation of such a complex system, determining the optimal operation is not obvious. One approach to optimizing operation is to formulate a mathematical model of the system. Such a model may be used to determine the present and future optimal operation of the system. It can serve as a tool to gain experience in system operation by varying system inputs and examining optimal solution behavior. ..."--leaf i
Author :Food and Agriculture Organization of the United Nations Publisher :Food & Agriculture Org. ISBN 13 :9789251047682 Total Pages :116 pages Book Rating :4.0/5 (476 download)
Book Synopsis Deficit Irrigation Practices by : Food and Agriculture Organization of the United Nations
Download or read book Deficit Irrigation Practices written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2002 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the context of improving water productivity, there is a growing interest in deficit irrigation, an irrigation practice whereby water supply is reduced below maximum levels and mild stress is allowed with minimal effects on yield. Under conditions of scarce water supply and drought, deficit irrigation can lead to greater economic gains than maximizing yields per unit of water for a given crop; farmers are more inclined to use water more efficiently, and more water-efficient cash crop selection helps optimize returns. However, this approach requires precise knowledge of crop response to water as drought tolerance varies considerably by species, cultivar and stage of growth. The studies present the latest research concepts and involve various practices for deficit irrigation. Both annual and perennial crops were exposed to different levels of water stress, either during a particular growth phase, throughout the whole growing season or in a combination of growth stages. The overall finding, based on the synthesis of the different contributions, is that deficit or regulated-deficit irrigation can be beneficial where appropriately applied. Substantial savings of water can be achieved with little impact on the quality and quantity of the harvested yield. However, to be successful, an intimate knowledge of crop behavior is required, as crop response to water stress varies considerably.
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1983 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Capability of Integer Programming Algorithms in Solving Water Resource Planning Problems by :
Download or read book Capability of Integer Programming Algorithms in Solving Water Resource Planning Problems written by and published by . This book was released on 1976 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Application of Optimization and Simulation Techniques to Irrigation Management by : George Bwalya Matanga
Download or read book Application of Optimization and Simulation Techniques to Irrigation Management written by George Bwalya Matanga and published by . This book was released on 1977 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Civil Engineering Hydraulics Abstracts by :
Download or read book Civil Engineering Hydraulics Abstracts written by and published by . This book was released on 1982 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :International Commission on Irrigation and Drainage. Permanent Committee on the Application of Systems Analysis to Irrigation, Drainage, and Flood Control Publisher :Pergamon ISBN 13 : Total Pages :220 pages Book Rating :4.F/5 ( download)
Book Synopsis The Application of Systems Analysis to Problems of Irrigation, Drainage, and Flood Control by : International Commission on Irrigation and Drainage. Permanent Committee on the Application of Systems Analysis to Irrigation, Drainage, and Flood Control
Download or read book The Application of Systems Analysis to Problems of Irrigation, Drainage, and Flood Control written by International Commission on Irrigation and Drainage. Permanent Committee on the Application of Systems Analysis to Irrigation, Drainage, and Flood Control and published by Pergamon. This book was released on 1980 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
