Unformatted text preview: increases with OT Difficult to apply small amounts uniformly Treat as fixed amount, variable frequency sys. Factors Affecting IE & DU Factors Affecting IE & DU Factors Affecting IE & DU Good timing Good timing Good timing Good DU Good DU Good DU Soil variability Spacing/overlap Pressure variations OT: Sloping furrow Flow rate Clogging Adv. Ratio < 0.5 Sprinkler size Water treatment OT: Other Systems Wind Filtration (Min OT/Max OT) > 0.5 Pressure variations Physical separation Watering time Nozzles Chemical treatment Flow rate Sizes, wear, plugging Collect runoff Management Keys Management Keys Management Keys Uniform OT Appl. rate < infilt. rate Frequent, small applications Quick advance Spacing/overlap Proper timing Short Runs Adequate pressure High quality equipment High flow rates Limit pressure variations Prevent clogging Torpedoes Check nozzle wear, sizes Water treatment Tailwater return flow syst. Maintenance Laser leveling Filters Compaction differences...
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- Spring '08
- Irrigation sprinkler, main types, Good DU