Variable Rate Application of Irrigation Water with Center Pivots PDF Download

Author: William L. Kranz
Publisher:
ISBN:
Category : Precision farming
Languages : en
Pages : 8

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Book Description
This publication provides information about the electronic controls and communication equipment that have been developed to allow center pivots to deliver irrigation water based on spatial production levels, soil texture, fertility, or field topography. Though the focus of this publication is center pivot irrigation systems, some of the information could also apply to sprinkler irrigation systems tha move in a straight line across the field. (Page 1)

Author: Andrew David Rackers
Publisher:
ISBN:
Category : Electronic Dissertations
Languages : en
Pages : 192

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Book Description
Variable rate irrigation was studied for the production of corn and rice on a nonuniformsoil texture using a three tower, conventional, center-pivot irrigation system on the East Marsh Pivot (Marsh Pivot) at the University of Missouri Delta Research Center in Portageville, MO. The soil of the Marsh Pivot is of the Hayti-Portageville-Cooter association. Veris Technologies' Soil Electrical Conductivity (EC) System was used in 2002 to determine the sand content within the soil. The mean sand was calculated from the deep reading of the system because the EC from the deep reading had the better correlation with the calibration soil samples from the Marsh Pivot. Six irrigation treatments were used for corn irrigation in 2009 and 2010. In 2009, 15 mm was used to produce the maximum yield for corn, but in 2010 46 mm was used to produce the maximum yield for corn on the non-uniform soils. However, for both years 8 mm produced yields equal to or greater than all other irrigation treatments at the 95% confidence interval. Seven repetitions of six irrigation treatments were studied on the east half of the Marsh Pivot in 2010. The center-pivot irrigation system produced average yields greater than conventional flood irrigation (8970 kg-ha-1 vs 7040 kg-ha-1, Vories et al., 2002) while using less applied water for an application depth of at least 11 mm, (790 mm vs 1200-1600 mm)., Jehangir et al., 2004).

Author: John V. Stafford
Publisher: Brill Wageningen Academic
ISBN: 9789086863372
Category : Precision farming
Languages : en
Pages : 0

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Book Description
Precision agriculture is a reality in agriculture and is playing a key role as the industry comes to terms with the environment, market forces, quality requirements, traceability, vehicle guidance and crop management. These proceedings contain reviewed papers presented at the 12th European Conference on Precision Agriculture. The papers reflect the wide range of disciplines that impinge on precision agriculture - technology, crop science, soil science, agronomy, information technology, decision support, remote sensing and others.

Author: Jennifer Laffan
Publisher: NSW Agriculture
ISBN: 1742569285
Category : Technology & Engineering
Languages : en
Pages : 76

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Book Description
Centre pivots and lateral moves (CPLM) are pressurised irrigation systems that supply water to crops or pastures. They are suitable for a wide range of broadacre farming enterprises, different soil types and undulating terrain. This book is about: · the components of centre pivot and linear move irrigation systems · unique features of CPLM pressurised irrigation systems · fundamentals of a pressurised irrigation system and their impact on efficiency · measuring performance of CPLM systems · pressure and discharge tests on a pressurised irrigation system · pressure and discharge variations · how the performance characteristics impact on total water use and crop uniformity · evaluating the function of an irrigation system. This book focuses on the water delivery aspects and the key measures of efficiency: Field Application Efficiency, Distribution Uniformity, Average Application Rate and Average Application Depth per Pass. This publication was produced by Education Delivery, Tocal College. It supports the following competencies from National Training Package AHC10 Agriculture, Horticulture, Conservation and Land Management: AHCIRG502A – Design irrigation system maintenance and monitoring program

Author: Luis Santos Pereira
Publisher: Springer Science & Business Media
ISBN: 1402095791
Category : Technology & Engineering
Languages : en
Pages : 385

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Book Description
One of the main problems confronting the world of the 21st Century is a shortage of water. There is already severe scarcity in many regions of the world, causing tremendous problems for local populations and indeed entire societies. There is insufficient water available for the production of food to alleviate poverty and starvation; the lack of water hampers industrial, urban and tourism development, forcing restrictions on other sectors, especially agriculture; health problems arise as the deterioration of ground and surface waters favours water-borne diseases, which flourish in the absence of decent water distribution and sewerage systems. Water conflicts still arise in areas under stress, while water for nature has become a vanishing priority in such zones. This book is a guide to the establishment of regional and/or local guidelines for developing and implementing new ideas for coping with water scarcity. The basic premise underlying the book is that water scarcity will persist, so personal, human and society-wide skills will be needed to cope with it while living in harmony with the necessary environmental constraints. The book provides basic information to assist decision makers, water managers, engineers, agronomists, social scientists and other professions (and their students) in formulating coherent, hopefully harmonious and consolidated views on the issue. Guidelines are also given for introducing the general public to the concept of water scarcity and how to deal with it.

Author: Peter Waller
Publisher: Springer
ISBN: 3319056999
Category : Science
Languages : en
Pages : 747

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Book Description
This textbook focuses specifically on the combined topics of irrigation and drainage engineering. It emphasizes both basic concepts and practical applications of the latest technologies available. The design of irrigation, pumping, and drainage systems using Excel and Visual Basic for Applications programs are explained for both graduate and undergraduate students and practicing engineers. The book emphasizes environmental protection, economics, and engineering design processes. It includes detailed chapters on irrigation economics, soils, reference evapotranspiration, crop evapotranspiration, pipe flow, pumps, open-channel flow, groundwater, center pivots, turf and landscape, drip, orchards, wheel lines, hand lines, surfaces, greenhouse hydroponics, soil water movement, drainage systems design, drainage and wetlands contaminant fate and transport. It contains summaries, homework problems, and color photos. The book draws from the fields of fluid mechanics, soil physics, hydrology, soil chemistry, economics, and plant sciences to present a broad interdisciplinary view of the fundamental concepts in irrigation and drainage systems design.

Author: John V. Stafford
Publisher: Brill Wageningen Academic
ISBN: 9789086863631
Category : Conference proceedings
Languages : en
Pages : 0

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Book Description
Precision agriculture is a reality in agriculture and is playing a key role as the industry comes to terms with the environment, market forces, quality requirements, traceability, vehicle guidance and crop management. Research continues to be necessary, and needs to be reported and disseminated to a wide audience. These proceedings contain reviewed papers presented at the 13th European Conference on Precision Agriculture, held in Budapest, Hungary. The papers reflect the wide range of disciplines that impinge on precision agriculture - technology, crop science, soil science, agronomy, information technology, decision support, remote sensing and others. The broad range of research topics reported will be a valuable resource for researchers, advisors, teachers and professionals in agriculture long after the conference has finished.

Author: Keith A. Miller
Publisher:
ISBN:
Category :
Languages : en
Pages : 97

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Book Description
Increasing concern for sustainable water use has the agriculture industry working toward higher efficiency use of irrigation water. The average irrigation water use efficiency throughout the United States is 45%, which is extremely poor. Advancements in crop management have continued to allow producers to know more about the conditions in their field from nutrient management and pest control, to understanding yield spatially. Recent mechanical advancements have improved the capabilities of center pivot irrigation systems to water various depths throughout the field. This technology is known as variable rate irrigation (VRI). With VRI comes a whole new strategy for irrigation. Advancements in remote and mobile sensing have played a major role in collecting data spatially throughout a field in order to aid in the management of VRI. The goal of this study was to provide a method for potential VRI technology adopters to evaluate potential water savings using datasets collected with varying levels of complexity. The proposed method was based on estimating root zone water holding capacity (RZWHC) spatially across two case study fields and treating each with URI and both sector and zone-controlled VRI.

Author: John Stafford
Publisher: BRILL
ISBN: 9086865143
Category : Technology & Engineering
Languages : en
Pages : 783

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Book Description
Precision Agriculture presents the latest scientific results from worldwide research, field studies and practical application. The book contains peer-reviewed papers that were presented at the 4th European Conference on Precision Agriculture. The papers focus on precision agriculture research containing interdisciplinary site analysis, integrative measures and management strategies as well as on practical applications. The economic and environmental effects of implementing the precision agriculture concept are featured in many of them. The unique feature of the fourth conference was that it was held in parallel with the 1st European Conference on Precision Livestock Farming - the links between both technologies were drawn and the possible interactions between them were shown for the first time. The potential is to integrate both technologies to encompass the whole farm. Peer-reviewed papers from the Precision Livestock conference are presented in a companion proceedings, Precision Livestock Farming.

Author: Qin Zhang
Publisher: CRC Press
ISBN: 1482251086
Category : Science
Languages : en
Pages : 383

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Book Description
This book provides a review of precision agriculture technology development, followed by a presentation of the state-of-the-art and future requirements of precision agriculture technology. It presents different styles of precision agriculture technologies suitable for large scale mechanized farming; highly automated community-based mechanized production; and fully mechanized farming practices commonly seen in emerging economic regions. The book emphasizes the introduction of core technical features of sensing, data processing and interpretation technologies, crop modeling and production control theory, intelligent machinery and field robots for precision agriculture production.