Welcome to the Irris Scheduler Home Page


Irris Scheduler estimates irrigation water needs for corn, soybean, established alfalfa, dry bean, potato and other crops, as well as soil nitrogen losses and availability. It was developed by the Purdue University Department of Agronomy as an easy-to-use tool to assist crop producers with irrigation scheduling and nitrogen application decisions.

New features in version 1.33 (as of 04-Apr-2016, release 1.3.3.0):

New features in version 1.31 (as of 28-Jul-2015, release 1.3.1.0):

New features in version 1.30 (as of 20-May-2015, release 1.3.0.0):

New features in version 1.22 (as of 13-Mar-2015, release 1.2.2.0):

New features in version 1.21 (as of 25-Feb-2015, release 1.2.1.0):

New features in version 1.20 (as of 05-Feb-2015, release 1.2.0.0):

New features in version 1.10 (as of 24-Sep-2014, release 1.1.0.0):

New features in version 1.09 (as of 27-Jan-2014, release 1.0.9.1):

New features in version 1.09 (as of 20-Jun-2013, release 1.0.9.0):


New features in version 1.07 (as of 02-Feb-2012, release 1.0.7.0):


New features in version 1.06 (as of 22-Dec-2011, release 1.0.6.0):

New features in version 1.05 (as of 21-Nov-2011, release 1.0.5.0):

New features in version 1.04 (as of 17-Feb-2011, release 1.0.4.1):


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Last updated: April 6, 2016

Copyright © 2016 Purdue Research Foundation