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    absolute dominion rule, 173

    adequacy of irrigation, 86-87, 90

    advance curve, 188-89, 194

    advance phase, 200, 204

    advance time, 188, 195-99, 203

    advance, recession, and infiltration, 18

    advection, 51-52, 58

    aerodynamic methods, 52

    affinity laws, 162-63, 168

    air gap, 327, 331

    albedo, 51, 58

    algae, 308, 311, 321

    allowable depletion, 17, 87, 96, 109

    application efficiency of the low quarter, 87, 95

    application efficiency, 82-83, 87-88, 92, 95, 101, 187, 195, 219, 226, 238

    application rate, 36, 187, 214, 229, 238, 255, 263-68, 283-86, 289, 299, 324, 332, 336

    application time, 217, 238, 244, 317

    application uniformity, 83-85, 94, 193, 330

    aquifer, 2, 102-103, 171, 173-78, 180, 182

    atmospheric vacuum breaker (AVB), 328

    available water capacity, 17-18, 107, 109, 112

    available water, 13, 16-19, 107-13, 117

    backflow prevention, 157, 302-303, 324, 326- 31

    backflow prevention, reduced-pressure zone (RPZ), 327

    backpressure, 326-27

    backsiphonage, 326-28

    bacterial slime, 308, 311-12

    basal crop coefficients, 64

    basic infiltration rate, 21

    basic intake rate, 21

    basin and border irrigation, 191, 200

    basin irrigation, 81, 185, 195, 200

    basins, borders, and furrows, 80

    beneficial use, 171, 173-74

    Bernoulli equation, 149-51

    bicarbonate, 311

    big gun sprinkler, 79, 210, 257-66

    border irrigation, 185, 200

    boron, 133, 138, 141

    brake horsepower (bhp), 164

    bubblers, 298-300, 305

    bulk density, 11-12, 24-25

    dams, 182

    Darcy-Weisbach equation, 152, 305

    deep percolation, 23-24, 81-83, 86-88, 90-91, 99, 101-103, 110, 115, 139, 187, 193, 195, 198, 200, 235

    deep wells and well hydraulics, 178

    deficit irrigation, 108

    depletion, allowable, 17, 87, 96, 109

    depletion, soil water, 17, 82, 97-98, 108, 125

    depth of water applied, 253

    depth volume relationships, 35

    dew point temperature, 58, 228

    diameter of coverage, 212-17, 235, 248, 250, 266, 284, 292

    diameter, wetted (diameter of coverage), 212- 17, 235, 248, 250, 257, 263, 266, 272, 284, 292

    discharge, 45, 147, 149, 155, 159-63, 166-68, 178-80, 209, 213, 217-26, 238, 247-50, 279- 81, 285-86, 297-302, 304-309, 312-17, 322, 333-36

    discharge, or volume flow rate, 213

    distribution pattern, 217, 264

    distribution uniformity, 83, 191, 315

    ditch, 81, 92, 159, 181, 327

    doctrine of prior appropriation, 173-74

    doppler, 38, 41, 43

    downtime, 95, 99, 226

    drag-line system, 236

    drawdown, 178-80

    drip irrigation, 81, 101, 298-99, 303

    drip irrigation, subsurface, 81, 300-301, 332

    drip irrigation, surface, 299

    duration, 100, 181, 191, 203

    effective depth, 87, 110-13, 120, 191

    effective precipitation, 116-17, 120

    efficiency, 82-83, 86-90, 92-95, 101-102, 147, 160, 163-67, 191-92, 194-200, 235, 315

    electrical conductivity, 126, 134-35, 139

    electrical resistance blocks and granular matrix sensors, 28

    elevation head, 147, 149, 159 ELQ, 88, 94-95, 97, 100, 187, 195, 197, 238

    emission uniformity, 86, 315

    emitter discharge, 312

    emitter, 81, 83, 94, 297, 305-09, 311-17

    end gun, 84, 155, 278, 280, 324

    energy consumption, 165

    energy, kinetic, 147, 286

    energy, potential, 147, 148

    environmental considerations, 2, 183, 321-22, 324-26, 330

    equilateral triangle spacing, 219

    erosion, 1, 2, 6, 138, 186, 194, 201, 257 ET, 49-50, 55-57, 62, 68, 107, 112, 116-20, 122-26, ET,

    reference crop, 56

    infiltration, 20-23, 110, 122, 137, 143, 186-91, 193-200, 203, 284

    injection rates and calibration of injection devices, 331

    intake family, 288

    irrigation development, 3

    irrigation efficiency, 90, 101-102, 191, 199

    irrigation interval, 99, 113, 197, 226, 238, 242, 254, 269

    irrigation management concepts, 7

    irrigation pipeline backflow prevention devices, 326

    irrigation pipeline low pressure switch, 330

    irrigation scheduling, 14, 28, 107, 112, 115-16, 121-24

    irrigation system capacity, 95

    irrigation systems, types of, 79

    land leveling, 80

    landscape coefficient, 72-73

    lateral analysis, 248-49

    lateral design, 220

    lateral move, 80, 277-79, 285, 332

    laterals, 155, 211, 216-28, 234-44, 248-56, 277, 282-83, 285, 299, 304-305, 312, 333

    laterals, periodically moved, 234

    leaching fraction, 139

    leaching requirement, 139-41

    leaching, 139-42, 236, 238, 321, 325

    leaf water potential, 123

    linear or lateral move, 285

    long-wave radiation, 51, 58-59, 230

    low energy precision application (LEPA) systems, 124, 278, 287

    low quarter, 117, 195, 197

    low quarter, application efficiency of, 87, 95

    lysimeter, 53, 55

    magnesium, 137-38

    magnetic flowmeters, 42

    mainline, 147, 156, 211-12, 218-20, 223-24, 234-44, 247-50, 254-56, 266, 282, 301-304, 333

    management of chemigation systems, 331

    management of sloping furrow irrigation systems, 193

    management of surge flow irrigation, 204

    management plan, 242

    management problems, 256

    management, 79, 125, 193, 204, 242, 316, 331

    management, reactive, 199

    manifolds, 255, 301-305, 309, 312, 333

    mass balance, 190

    mass conservation, 147, 149, 190

    mass water content, 12-13

    matric potential, 15-16, 24, 27-28

    maximum lateral inflow, 223

    mean velocity, measurement, 38, 52, 134

    ponding, 21-22, 141-42

    ponds, 143, 171, 177, 198, 286, 309

    porosity, 11-12, 16, 174-75

    power requirements, 163

    power, horsepower, 162-65

    precipitation of dissolved solids, 311

    precipitation, 21-22, 53-54, 102, 116, 120, 171, 183, 317, 322

    pressure compensating nozzles, 223, 283

    pressure differential methods, 40, 44

    pressure distribution, 246, 281

    pressure loss due to friction loss, 152

    pressure loss, 152, 154, 283

    pressure regulators, 223, 248, 285

    pressure vacuum breaker (PVB)

    assembly, 328

    pressurized delivery systems, 182

    preventing clogs, microirrigation, 308

    pump and pipeline hydraulics, 147

    pump efficiency, 160, 163, 165

    pump horsepower, 164

    pump, submersible, 158, 161

    pumps, 147, 158-68, 176-80, 182-83, 322, 331

    reactive management, 199

    recession curve, 188-89, 194

    recession time, 189, 195-97, 200

    recharge, 2, 6, 102, 171

    reclaimed water supplies, 183

    reclamation, 4, 141

    recoverable fraction, 102

    rectangular spacing, 218

    reduced-pressure zone (RPZ) backflow prevention, 327

    reference crop ET, 56

    relative humidity, 52, 66, 67, 229-30

    remote sensing, 29, 75

    reservoir, 92, 107, 109, 171, 176, 201-202, 309, 311

    return flow system, surface irrigation, 80

    return flow, 80, 103 reuse, 100, 187, 193, 199

    riparian doctrine, 173

    role of irrigation in crop production, 2

    root, root zone, 11, 15-20, 23-24, 29, 53-54, 68, 82-83, 86-87, 90, 95, 98, 101, 107, 109-19, 121-23, 132, 297

    rooting depth, 110-11 rotation, 100, 181, 209, 250, 263, 273, 277, 284

    roughness, 152, 181, 187, 305

    rule of reasonable use, 174

    runoff recovery systems, 80, 89, 191, 193, 195, 200-201

    runoff water, 82, 89, 191, 199, 201

    runoff, 21-22, 80-82, 84, 87-89, 94, 102, 125, 171, 183, 186, 190-204, 213, 257, 284-93, 325

    runoff, options for managing, 200

    surface irrigation, 80, 185, 193

    surface sealing, 22

    surface water supplies, 180

    surface water, 173, 180, 182

    surface water-groundwater interaction, 182

    surge flow irrigation, 203

    sustainable, 1, 172

    system capacity requirements 95

    system characteristics, 100

    system components, 209, 301

    system design, 255

    system evaluation, 94, 252

    system types, 298

    tailwater, 193

    tanks, 324

    tensiometer, 27, 28

    thermal dissipation blocks, 29

    time domain reflectometry (TDR), 26-27, 121

    towed sprinkler, 80

    tow-line system, 100, 236

    toxicity, 132-33, 138

    transpiration, 50, 55, 63, 72, 108

    traveler, 79, 261-73 trickle, 79, 81, 100, 298-300

    tube or cased wells, 178

    turbulent flow, 312, 314

    ultrasonic measurement, 41

    uniform distribution, 187, 194, 209

    uniformity evaluation, 251

    uniformity, 82-88, 90-91, 94, 101, 186-91, 193, 199-200, 203, 211-12, 216-18, 235, 250-51, 264-66, 280, 308, 312-15, 321, 330

    uniformity, Christiansen, 83-84 valve, 156-60, 163, 202-05, 224, 254, 278, 293, 303, 322-23, 326-33

    valve, relief, 148, 157, 256, 326-29

    vapor pressure, 51, 56, 58, 124

    variable frequency drive (VFD), 168, 278

    variable rate irrigation, 125-26, 168, 278, 293- 94, 324

    calcium, 137-38, 142

    calcium, 311

    calculating ET, 55

    calculation of irrigation efficiency, 191

    canal, 92-93, 98, 101, 181-82, 295

    capacitance probe, 27

    capacity of the soil water reservoir, 109

    capacity, gross system, 95-98, 226, 280, 284, 288

    capacity, net system, 95-98, 226, 239

    capillarity, 15, 20, 118, 297

    center pivot irrigation, 80, 83-86, 115, 277-78, 324, 332

    centrifugal pump, 158, 160-62

    channel, 37-38, 43-45, 147, 180-81

    checkbook method, 116-20

    chemical amendments, 297

    chemical injection pipeline safety devices, 329

    chemical injection pumps, 322

    chemical injection tubing, 324

    chemical leaching, 83, 90

    chemigation check valve assembly, 326

    chemigation, 321-26, 329-31

    chemigation, advantages of, 321

    chemigation, disadvantages of, 322

    chloride, 133, 138, 142

    chlorine, 311-12

    Christiansen uniformity coefficient, 83-84

    climatic information, 74

    clogging, 257, 297, 308-11, 330

    column, 55

    computing losses due to friction, 152

    conservation, energy, 147, 149

    conservation, mass, 147, 149, 190

    consumed fraction, 102

    consumptive use, 6, 102, 316

    control station, 303

    controllers, 99, 254, 257, 301, 324, 332

    conveyance efficiency, 92-93, 98

    correlative rights doctrine, 174

    cost, energy, 94, 101, 165, 185

    coupler, 235, 237, 277

    crop coefficient, 55, 62, 66

    crop salt tolerance, 135

    cumulative uniformity, 250

    cutback, 191, 200, 204

    cutoff ratio, 190, 193, 195-202

    cycle time, 99-100, 204

    evaporation, 15, 18, 23, 50, 57, 63, 69, 108, 123, 143, 210, 229-30, 297

    evapotranspiration, 49-50, 55-57, 62, 68, 107, 112, 116-17, 122, 125, 131

    feel and appearance method, 25

    fertigation, 321, 331

    fertilizer, 1, 297

    field capacity, 15-19, 23, 110, 117, 125

    filters, 297, 301-04, 308-12

    filtration, 135, 297, 300, 303-04, 308-11

    flow control, 222-23, 235, 248, 256, 303

    flow measurement in open channels, 43

    flow measurement in pipelines, 38

    flow measurement, basic principles, 37

    flow meter, 42

    flow rate, 35, 40, 81, 87, 94-95, 99, 149, 152- 64, 166-67, 176, 180-82, 191, 196, 199-200, 204, 209, 222, 247, 302-05, 310, 324

    flume, 44-45

    flume, Parshall, 44, 45

    flume, RBC, 44, 45

    flushing microirrigation systems, 312, 314, 333

    frequency domain reflectometry, 27

    friction loss, 149, 152, 155, 220, 242, 262, 270, 282, 304-307

    frost protection, 228 furrow irrigation, 81, 84, 185-90, 193-200, 204

    gated pipe, 156, 186, 193

    granular matrix sensors, 28-29, 121

    gravimetric method, 24

    gravimetric water content, 13

    greenhouse irrigation, 298

    gross irrigation, 83

    groundwater supplies, 176

    groundwater, 2, 5-7, 92, 102, 116, 118, 133, 171-77, 180, 182, 325

    gun performance, 263 guns, 257, 259, 262

    hand-move system, 233-37, 247, 250

    hard hoses, 262, 269

    Hazen-Williams equation, 152, 154, 282, 305 head, 14-15, 23, 39-41, 44-45, 81, 147-55, 159- 64, 167, 176, 181, 201, 210, 300, 312

    Heermann and Hein equation, 85, 97-98, 277

    horsepower, 162-65 hose, 237, 247, 261-67, 269-73, 279, 307

    hydraulic conductivity, 22, 118, 137, 174-75

    hydraulics, 147

    hydrostatic pressure, 174

    impact of irrigation, 6

    impact sprinkler, 209-10, 214-15

    impeller, 159-63, 168

    impermeable barrier, 21, 174

    infiltration factor, 197

    measuring soil water content and matric potential, 24

    measuring water applications, 35

    meter, flow, 42

    meter, mechanical, 38

    meter, neutron scattering, 25, 27, 53, 121

    microirrigation, 79, 81-83, 85-87, 99, 152, 156, 297-99, 301-05, 307-17

    microspray, 299-300, 305

    minor losses, 149-52, 159

    moved lateral systems, 80, 235, 241, 272

    moving lateral systems, 79-80, 282

    net irrigation, 82-83

    net radiation, 51, 56-58

    neutron probe, 25-26, 30, 53

    neutron scattering, 25, 27, 53, 121

    nitrate, 6

    nitrogen, 321

    non-recoverable fraction, 102

    nozzle and sprinkler selection, 285

    nozzle, 209-15, 220-23, 226, 229, 235-36, 247- 50, 255-60, 263, 270-72, 280-81, 285-86

    open canals,

    181 operational characteristics, 238, 268

    operational factors, 99

    opportunity time, 189

    organic materials, 311

    orifice, 41, 213, 223, 307, 309, 314

    performance measures, 82

    periodically moved laterals, 234

    permanent wilting point, 15, 17, 19

    permeability, 22, 174, 288

    pesticides, 6, 102, 183, 202, 321, 322, 331

    pipe, 38, 147, 149-58, 180, 182, 185, 209, 220, 233, 241, 277, 282, 298, 304, 311, 314, 328, 333

    pipe, iron pipe size (IPS), 153, 156

    pipe, plastic irrigation pipe (PIP), 154, 156

    pipe, polyethylene (PE), 156, 304, 305

    pipe, polyvinylchloride (PVC), 152, 153, 154, 156, 178, 235, 254, 304

    pipelines, 37, 147, 149-58, 180, 182, 201, 211, 224, 236, 256, 277, 302, 307, 312, 322-24, 326-33

    pitot, 40-41

    placement of soil water sensors, 29

    plant canopy temperature, 123

    plant development, stage, 124

    plant monitoring methods, 55

    plant response, 108

    plant root zone, 110

    plant status indicators, 124

    plant water use, 49

    plugging, 81, 257, 308-11, 321

    pollution, 183

    safety devices, 324, 331

    safety, 101, 273, 324, 326, 329-31

    salination, 1-2, 131-32, 143

    saline soil, 28, 134, 141

    saline, 103, 118, 128, 133, 136, 140, 142, 309, 316

    salinity and the environment, 143

    salinity management, 131

    salinity, 7, 15, 28, 131, 134, 138, 141, 143, 238, 297, 316-17

    salt in soils, origin of, 133

    sand, silt, and clay separates, 12

    saturation vapor pressure, 52, 56-58

    saturation, 16, 21, 23, 171, 174

    schedule, 107, 116, 120, 123, 181, 316

    scheduling coefficient, 90

    scheduling using plant status indicators, 123

    seepage, 92-93, 98, 181

    sensors, 26-29, 121, 125

    set or station, 99

    set time, 99, 187, 190, 193-201, 203, 226, 238, 242, 254, 269, 273

    shallow wells, 176

    side-roll, 80, 242

    single-sprinkler systems, 79

    skid-tow system, 236

    sodic soil, 132, 141-43

    sodicity, 132, 137-38

    sodicity, sodium absorption ratio, 138

    soil composition, 11

    soil textural triangle, 12

    soil water content, 11-12, 15-17, 24-26, 29, 107, 121

    soil water deficit, 17, 110, 116, 125

    soil water depletion, 17, 108, 125

    soil water measurement method, 121

    soil water potential, 11, 14-15, 121

    soil water reservoir, 16, 109, 119

    soil water reservoir, capacity of, 109

    soil water, 11-12, 14, 16, 25, 108, 112, 121

    solar radiation, 50-51, 55-56, 58

    solid-set system, 80, 254-57, 273

    specific capacity, 179

    specific yield, 174

    sprinkler and nozzle selection, 285

    sprinkler discharge, 239, 250, 279

    sprinkler head, 213-14, 230, 293

    sprinkler irrigation systems, 101, 233, 238

    sprinkler irrigation, 79

    sprinkler performance, 213

    sprinkler system design, 226

    sprinklers, 209-24, 226-30, 236, 250, 261, 278

    stage of plant development, 124

    storage of infiltrated water, 23

    strainer, 330

    submersible pump, 158, 161

    surface irrigation systems, improvement of, 193

    velocity methods, 43

    velocity, allowable, 224

    velocity-flow-area relationship, 37

    venturi, 322-23

    vertical turbine pump, 158-59, 161, 164

    viscosity, 23

    volume balance, 190

    volumetric flow rate, 149

    volumetric water content, 12-13, 15-17, 24-26, 114

    wastewater, 183, 257

    wastewater, land treatment from, 183, 257

    water applicators, 307

    water balance, 190

    water conservation, 102

    water hammer, 148, 256

    water horsepower, 163-65

    water requirements, 316

    water resources sustainability, 101

    water rights and laws, 173

    water stress effects, 68

    water supply systems, 171

    water table, 116, 118, 174-80, 300

    water use process, 50

    watered furrows, 190

    waterlogging, 1

    weather, 2, 7, 50, 55, 58, 71, 74-75, 83, 108, 117, 120, 256

    weir, 44

    well casing, 180

    well construction, 179

    well screen, 180

    well, tube or cased, 178

    wet soil evaporation, 69

    wetlands, 174

    wetted area, 316

    wetted diameter, 214, 257, 263, 272, 289, 292

    wetting front, 188, 199

    wheel-line system, 237

    wheel-move system, 237

    wilting, 17, 124

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