BRAE 236 Surface Evaluation ss

BRAE 236 Surface Evaluation ss - 1 Surface Irrigation...

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Unformatted text preview: 1 Surface Irrigation Evaluation Evaluation …….- Furrows BRAE/ITRC Cal Poly- Border Strips Surface Irrigation • About 50% of California’s irrigation. • Almost all crops. • Often combined with sprinklers. • Most difficult to manage. • Capable of high DU and efficiency if ITRC/BRAE Cal Poly soil, design, and management are correct 2 Siphon Tubes for Furrows ITRC/BRAE Cal Poly Gated pipe for Furrows ITRC/BRAE Cal Poly 3 Energy Dissipation Socks for Furrows ITRC/BRAE Cal Poly Tailwater Recovery System - pond, pump, and pipeline ITRC/BRAE Cal Poly 4 Two big factors affecting Two big factors affecting Surface Irrigation: Surface Irrigation:- Runoff Volume is Unknown Runoff Volume is Unknown ITRC/BRAE Cal Poly- Soil is transportation (not pipe) Soil is transportation (not pipe) Border Stirp on Almonds. Almost all of the soil surface is wet. Photos is at the tail end of the strip. No tailwater return system is seen. Tulare County, CA. ITRC/BRAE Cal Poly 5 BRAE/ITRC Cal Poly Border Strips The efficiency and uniformity of irrigation is dependent upon soil uniformity , quality of land grading, field topography, stream size, soil infiltration rate and duration of infiltration rate and duration of application… ITRC/BRAE Cal Poly Aerial View of Border Strips on Alfalfa 6 ITRC/BRAE Cal Poly Furrows on Tree Crop BRAE/ITRC Cal Poly Distribution Gates on Furrows 7 ITRC/BRAE Cal Poly "Moon Buggy" feeding water to Border Strips Good laser leveling is important with surface irrigation. The laser creates a PLANE (not necessarily zero slope). ITRC/BRAE Cal Poly 8 A medium-sized laser-controlled unit. The laser leveling automatically controls the final smoothing....
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This note was uploaded on 11/12/2011 for the course BRAE 236 taught by Professor Styles during the Spring '08 term at Cal Poly.

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BRAE 236 Surface Evaluation ss - 1 Surface Irrigation...

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