Field Office Technical Guide
July 18, 2005
UTAH TECHNICAL GUIDE
450-IV
NOTICE UT216
SUBJECT: ECS-IRRIGATION WATER MANAGEMENT EXCEL SPECIFICATION SHEET
Purpose. To transmit information regarding the recently updated Irrigation Water Management (449) Automated Excel Specification Sheet dated July 18, 2005.
Effective Date. Begin using the new spreadsheet immediately.
General Information. The following changes have been made to the automated specification sheet:
• Changed the way in which the first irrigation is calculated. The program now assumes that the soil moisture is at 50 percent at the beginning of the season and gives the last date at which an irrigation should begin to fill the profile before the plant begins to use water.
• Fixed rows 30 to 32 so that when a blank is entered, the rest of the information disappears.
• Fixed the formulas that calculate the approximate irrigation dates so that they match the lesser of MAD or the amount of water that the system applies based on the irrigation set time.
• Changed some of the comments so that they better describe how the spreadsheet is to be used.
• Changed wording on the corn/silage operation and maintenance statement.
• Added a statement to the soils tab that local soils data can be inserted if desired. It is planned to put together a soils database that has all of the information needed for IWM for all soil survey areas throughout the state. When this is completed, the specification sheet will be modified to allow automated entry of the soil map unit with associated available water holding capacity information.
Filing Instructions. The updated Excel specification sheet has been loaded in Section IV of the Electronic Field Office Technical Guide (eFOTG) under the folder for Irrigation Water Management (449). A copy of this notice can be found in Section I under the folder “FOTG Notices and Updates” of the eFOTG. Please make sure that employees delete all older versions of the spreadsheet so that only the new one is used.
Contacts. For information on how to use the specification sheet, contact Kerry Goodrich, Conservation Agronomist, at (801) 524-4568; Marlon Winger, Area Agronomist, at (801) 629-0580, ext. 12; Larry Young, Area Agronomist, at (435) 835-4171, ext. 22.; or Tony Beals, Area Agronomist, at (435) 637-0041, ext. 20.
/s/ Ron Davidson
M. RON DAVIDSON
Assistant State Conservationist -Technology
DIST:
All FOTG Holders
Surrounding States
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United States Department of Agriculture
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