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Nutrient Management Workbook

Author: OMAFRA Staff
Creation Date: 10 December 2003
Last Reviewed: 25 November 2004
1. Farmstead Information
  • Part 1
  • Part 2
    		• 2. Nutrient Management Workbook Summary
  • Metric Version
  • Imperial Version
    • 3. Guide to Completing the Workbook - Sections A to S
    1. Section A - Field Information
    2. Section B - Maximum Allowable Liquid Loading Rate
    3. Section C - Manure Information
    4. Section D - Commercial Fertilizer
    5. Section E - Previous Crop Nitrogen
    6. Section F - Previous Manure Nitrogen
    7. Section G - This Year's Manure
    8. Section H - Ontario Crop Production Requirements
    9. Section I - Agronomic Nutrient Balance
    10. Section J - Field Inputs
    1. Section K - Manure Nutrients Applied
    2. Section L - Crop Removal
    3. Section M - Crop Removal Balance
    4. Section N - Nitrogen Available for Potential Loss
    5. Section O - Nitrogen Index
    6. Section P - Phosphorous Index
    7. Section Q - Minimum Separation Distance from Surface Water
    8. Section R - Useable Acreage
    9. Section S - Maximum Rates
    4. Glossary 5. For More Information...

    Guide to Completing the Workbook – Sections A to S

    The workbook is a tool that simulates the NMAN Software.

    This workbook is organized in sections, from A to S, with each line of the Worksheet corresponding to the detailed descriptions found here help you develop the required information.

    Agronomic Nutrient Balance (Section D to Section I)

    Section G – This Year’s Manure

    The available nutrients from this year’s manure application are calculated by multiplying the application rate by the available nutrients per thousand gallons or per ton (as determined in section C). Add the available nutrients together from each application if manure is applied more than once.

    Example:

    Manure is applied at a rate of 3000 gal/ac with nutrient values of 26.3 lbs/1000 gal N, 21.2 lb/1000 gal P205 and 26.0 lb/1000 gal K20. The manure nutrients applied to the field are:

    N 26.3 divided by 1000 = 0.0263 lb/gal  x    3000 gal/ac = 79 lb/ac
    P205 21.2 divided by 1000 = 0.0212 lb/gal  x    3000 gal/ac = 64 lb/ac
    K20 26.0 divided by 1000 = 0.0260 lb/gal   x    3000 gal/ac = 78 lb/ac

    Back to the Nutrient Management Workbook Table of Contents

    For more information:
    Toll Free: 1-866-242-4460
    E-mail: nman.omafra@ontario.ca