PROCEEDINGS OF THE

2011 CENTRAL PLAINS IRRIGATION CONFERENCE

TABLE OF CONTENTS

WATER ISSUES IN COLORADO....................................................................................... 1

Dick Wolfe

IRRIGATION CAPACITY IMPACT ON LIMITED IRRIGATION

MANAGEMENT AND CROPPING SYSTEMS................................................................... 2

Joel P. Schneekloth and David C. Nielsen

PRESEASON IRRIGATION OF CORN WITH DIMINISHED WELL CAPACITIES......... 11

Alan Schlegel, Loyd Stone, Troy Dumler and Freddie Lamm

CORN PRODUCTION WITH LIMITED WATER SUPPLIES............................................ 19

Norm Klocke and Randall Currie

PERFORMANCE EVALUATION OF SELECTED SOIL MOISTURE SENSORS........... 29

José L. Chávez, Jordan L. Varble and Allan A. Andales

ET-BASED IRRIGATION SCHEDULING ........................................................................ 39

Allan A. Andales and José L. Chávez

UTILIZING SOIL MOISTURE READINGS IN IRRIGATION SCHEDULING.................... 47

Mark A. Crookston

CORN PRODUCTION WITH SPRAY, LEPA, AND SDI................................................... 52

Paul D. Colaizzi, Steven R. Evett, and Terry A. Howell

TWENTY-TWO YEARS OF SDI RESEARCH IN KANSAS ............................................ 68

Freddie Lamm, Danny Rogers, Mahbub Alam, Dan O’Brien and Todd Trooien

USING THE K-STATE CENTER PIVOT SPRINKLER

AND SDI ECONOMIC COMPARISON SPREADSHEET - 2011...................................... 93

Freddie Lamm, Dan O’Brien, Danny Rogers and Troy Dumler

EVALUATING ENERGY USE FOR PUMPING IRRIGATION WATER......................... 104

Derrel Martin, Tom W. Dorn, Steve R. Melvin, Alan J. Corr, and William Kranz

FLOWMETER MAINTENANCE AND ISSUES............................................................... 117

Jason Norquest

EVALUATING CENTER PIVOT NOZZLE-PACKAGE PERFORMANCE..................... 122

Danny H. Rogers and James K. Koelliker

VARIABLE RATE IRRIGATION 2010 FIELD RESULTS

FOR CENTER PLAINS CONFERENCE......................................................................... 135

Jacob L. Larue

MONITORING IRRIGATION WATER APPLICATION

WITH COMPUTERIZED CONTROLLERS..................................................................... 144

William Kranz

SELECTING SPRINKLER PACKAGES TO MINIMIZE POTENTIAL RUNOFF............ 155

Derrel L. Martin and C. Dean Yonts

IRRIGATION RESEARCH WITH SUNFOWERS IN KANSAS....................................... 169

Freddie Lamm, Rob Aiken and Abdrabbo A. Aboukheira

WATER USE OF OILSEED CROPS.............................................................................. 181

Rob Aiken, Freddie Lamm and Abdrabbo A. Aboukheira

YIELDS AND ET OF DEFICIT TO FULLY IRRIGATED CANOLA AND CAMELINA... 190

Gary W. Hergert, James Margheim, Alexander Pavlista, Paul Burgener,

Drew Lyon, Allison Hazen, Derrel Martin, Ray Supalla and Chris Thompson