Table of Contents

PERFORMANCE OF LOCALLY CALIBRATED IRRIGATION SCHEDULING TECHNIQUES IN WEST CENTRAL NEBRASKA.................................. 1

Hope Njuki Nakabuye, Tsz Him Lo, Daran Rudnick, Jacob Nickel, and Turner Dorr

IRRIGATION SCHEDULING USING A WATER BALANCE MODEL AND SOIL MOISTURE SENSORS .......................................................... 11

Allan Andales

IRRIGATION SCHEDULING WITH TEMPERATURE APPROACHES ..... 17

José Chávez

NITRATE LEACHING UNDER VARYING IRRIGATION TREATMENTS IN CORN PRODUCTION................................................................... 22

Xin Qiao and Bijesh Maharjan

INFORMING NITROGEN FERTIGATION OF CORN USING ACTIVE OPTICAL SENSORS ..................................................................... 30

Tsz Him Lo, Daran Rudnick, and Brian Krienke

THE ECONOMICS OF ADOPTING TECHNOLOGY AND/OR CHANGES IN METHODS ............................................................................. 36

Matt Stockton

SUMMARY OF EVALUATIONS OF CENTER PIVOT UNIFORMITY .................................................................................. 44

Danny Rogers and Jonathan Aguilar

ENERGY CONSERVATION USING VARIABLE FREQUENCY DRIVES FOR CENTER PIVOT IRRIGATION SYSTEMS .......................................... 60

Dilshad Brar, William Kranz, Derrel Martin, and Suat Irmak

EFFECT OF LIMITED WATER SUPPLIES ON CENTER PIVOT PERFORMANCE .......................................................................... 71

Derrel Martin, Derek Heeren, Steve Melvin, and Troy Ingram

EVALUATION OF MOBILE DRIP IRRIGATION (MDI) AND OTHER SPRINKLER PACKAGES ......................... 98

Jonathan Aguilar, Danny Rogers, Tobias Oker and Isaya Kisekka

ADVANCES IN SDI FERTIGATION FOR CORN ............................... 108

Freddie Lamm

IMPACTS OF RESIDUE MANAGEMENT IN IRRIGATED PRODUCTION .......................................................................... 122

Joel Schneekloth, Francisco Calderon, and Steven Fonte

IN-CANOPY VS. ABOVE-CANOPY SPRINKLERS, WHICH IS BETTER SUITED TO YOUR FIELD? ........................................................... 133

Steve Melvin and Derrel Martin

LIMITED IRRIGATION OF GRAIN SORGHUM ............................... 142

Alan Schlegel, Freddie Lamm and Isaya Kisekka

CORN PRODUCT RESPONSE TO INPUTS..................................... 152

Brian Olson and Mark Reiman