University of California
Manure Nutrient Management
Nitrogen Uptake and N Release Models
Nitrogen Uptake Calculator for Silage Corn, Winter Forage and Triplecrop Sudan Organic Nitrogen Release Model
UCCE N Uptake & Mineralization calculator v 1-15-12
- Calculate nitrogen uptake for each irrigation interval for winter cereal forage, silage corn and triplecrop sudangrass
- Calculates Growing Degree Units (GDUs) for silage corn
- Use supplied average minimum and maximum daily temperatures or easily insert and select your own data.
- Automatically calculates irrigation dates for silage corn
- Choose from three winter forage growth habits
- Menus for easily entering dates and changing data sources
- Calculated nitrogen released from applied organic form nitrogen on both interval and cumulative basis.
Instructions for N uptake and Organic N release calculator v 6-26-11
This spreadsheet will only run in Excel 2007 or higher. It uses functions and formatting that do not exist in earlier versions of Excel and thus it cannot be successfully converted to a previous version.
Be sure to enable macros when you first open the file.
A free trial of Microsoft Office 2010 (which includes Excel) may be downloaded from the Microsoft Website: office.microsoft.com/en-us/try/