Crop and Soil Sciences

Fertilizer Application Tools

WSU Post Harvest Nitrogen Efficiency Calculator

For more information WSU EB1987E

* denotes required input fields
Grower: Crop: * Assisted by:
Tract: Field size: acres Field Description:
Date: Soil type:
Input the following to calculate the post harvest efficiency:
Yield: *  bu/ac
Protein: *  %
Net soil nitrogen supply: *  lb/ac 
Nitrogen applied: *  lb/ac

Reginal Approaches to Climate Change-Pacific Northwest Agriculture
Funded through award #2011-68002-30191 from the USDA National Institute of Food and Agriculture