• Document: Sprinkle & Trickle Irrigation Lecture Notes
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Sprinkle & Trickle Irrigation Lecture Notes BIE 5110/6110 Fall Semester 2004 Biological and Irrigation Engineering Department Utah State University, Logan, Utah Merkley & Allen Page 2 Sprinkle & Trickle Irrigation Lectures Preface These lecture notes were prepared by Gary P. Merkley of the Biological and Irrigation Engineering (BIE) Department at USU, and Richard G. Allen of the University of Idaho, for use in the BIE 5110/6110 courses. The notes are intended to supplement and build upon the material contained in the textbook Sprinkle and Trickle Irrigation by Jack Keller and Ron D. Bliesner (Chapman-Hall Publishers 1990). Due to the close relationship between the lecture notes and the textbook, some equations and other material presented herein is taken directly from Keller and Bliesner (1990) – in these instances the material is the intellectual property of the textbook authors and should be attributed to them. In all other cases, the material contained in these lecture notes is the intellectual property right of G.P. Merkley and R.G. Allen. Copyright Notice This material has been duplicated by special permission of the copyright holders. It is not to be duplicated or used for purposes other than learning resource support for Utah State University. Any violation of this agreement is punishable under existing copyright laws and may include severe fines and or imprisonment. © Copyright 1990 to 2004 These lecture notes are formatting for printing on both sides of the page, with odd-numbered pages on the front. Each lecture begins on an odd-numbered page, so some even-numbered pages are blank. Sprinkle & Trickle Irrigation Lectures Page 3 Merkley & Allen Merkley & Allen Page 4 Sprinkle & Trickle Irrigation Lectures Contents No. Lecture Title Page Sprinkle Irrigation 1 Course Introduction.................................................................................... 9 2 Types of Sprinkler Systems; Soil-Water-Plant Relationships; Planning Factors ...................................................................................... 11 3 Sprinkler Characteristics; Application Rates ............................................ 25 4 Set Sprinkler Uniformity & Efficiency........................................................ 39 5 Layout of Laterals & Mainline for Set Sprinklers; Pipe Hydraulics............ 51 6 Economic Pipe Selection Method............................................................. 59 7 Set Sprinkler Lateral Design .................................................................... 71 8 Set Sprinkler Lateral Design & Analysis................................................... 85 9 Mainline Pipe Design ............................................................................. 101 10 Minor Losses, Pressure Requirements & Pumps................................... 111 11 Pumps & System Curves; Affinity Laws & Cavitation ............................. 123 12 Center Pivot Design & Operation ........................................................... 145 13 Center Pivot Nozzling & Hydraulic Analysis ........................................... 155 14 Center Pivot Uniformity Evaluation; Linear Move Systems .................... 169 15 Maximizing Linear Move Field Length; Design Example ........................ 179 Trickle Irrigation 16 Components & Layout; Pressure Control & Flow Regulation ................. 189 17 Filtration for Trickle Irrigation Systems ................................................... 197 18 Trickle Irrigation Planning Factors; Salinity in Trickle Irrigation .............. 207 19 Water Requirements; Coefficient of Variation & System Capacity ......... 215 20 Emitter Selection & Design; Design Approach & Example ..................... 225 21 Pipe Specifications & Lateral Design; Manifold Location ....................... 231 22 Numerical Solution for Manifold Location; Derivations ........................... 241 23 Manifold Hydraulic Design ..................................................................... 253 24 Hydraulic Design of Mainline & Supply Line........................................... 275 Note: Equations are numbered consecutively in these lecture notes as (xxx). Equations with the (xxx.xx) format refer to those found in the textbook by Keller & Bliesner. Sprinkle & Trickle Irrigation Lectures Page 5 Merkley & Allen Merkley & Allen Page 6 Sprinkle & Trickle Irrigation Lectures Units, C

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