Northeast SARE Grantee-Produced Info Product
Whole Farm Mass Nutrient Balance Calculator
Nutrient Management Tools and Curriculum
The Whole Farm Nutrient Balance Calculator is a stand-alone program written in Visual Basic© that calculates the annual difference between nutrients (N, P and K) imported onto the farm as feeds, fertilizers, animals, and bedding and exported nutrients in milk, animal and crop sales and manure and/or compost exports. Production characteristics such as cropland area, animal numbers, and average crop yields are also recorded.
The tool was designed to be used annually by producers and/or their advisors to determine where the greatest nutrient use efficiencies occur and to identify areas of concern and opportunities for more efficient nutrient use that, if addressed, could increase profitability and reduce environmental impact.
This tool can be used as an Extension tool on its own and/or integrated into a complete 4-hour nutrient management curriculum (1-hour lecture, 2-hour engaged activities and 1-hour advanced concepts). The following software and teaching components are available:
- Module outline
- Teaching guides
This Whole Farm Nutrient Balance Calculator can be adapted for use across the country. For up-to-date information, visit the Cornell University Nutrient Management Spear Program's website. For questions, contact Quirine Ketterings (firstname.lastname@example.org or 607 255-3061).
A series of nutrient management fact sheets are also available through the Nutrient Management Spear Program.
Want more information? See the related SARE grant(s) ENE09-112, Greater impact of advisor-farmer interactions through improved tools for whole-farm evaluation.
How to Order
Only available online
Project products are developed as part of SARE grants. They are made available with support from the Sustainable Agriculture Research and Education (SARE) program, which is funded by the U.S. Department of Agriculture-National Institute of Food and Agriculture (USDA-NIFA). Any opinions, findings, conclusions or recommendations expressed within project products do not necessarily reflect the view of the SARE program or the U.S. Department of Agriculture. USDA is an equal opportunity provider and employer.