Subsurface Drip in Clayey Soils

Table of Contents

Subsurface Drip in Clayey Soils

Objective

Piedmont Research Station

Soils

Evaluation

Factors Evaluated

Layout

Layout

June 12, July 20, Sept 19

Installation

Control Head

Control Head

Manifolds

Connections

Instrumentation

Instrumentation

TDR Probe

Instrumentation DetailTDRs

Watermark Sensor

Instrumentation DetailResistance Blocks

PPT Slide

Water Source

Irrigation Control

Irrigation Amount

Irrigation Metering

PPT Slide

July 11, 2000

Water Balance

Soil Moisture

Soil Moisture

Soil Moisture

June 12, 200 watermarks

June 12, July 20, Aug 5

Yields (shelling corn)

4 10-foot samples from yield rows

Yields

Email: garry_grabow@ncsu.edu

Other information:
Presented at North Carolina Irrigation Society Meeting, Nov. 8, 2000

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