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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...

    Nutrient Management Workbook Summary (Imperial Version)

    The requirements provided in O. Reg. 267/03 are in metric units. Imperial units appear in the Imperial version of the Workbook summmary and in brackets throughout this document. Values in imperial units are provided for information purposes only and provide a conservative conversion of the metric measurement.

    Refer to the sections with the corresponding letters for more detailed instructions and calculations.

    A

    Field Information

    Field No.________ Field ID_____________ Crop Type________ Average Yield_______ Tillable Acres______ Previous Crop______ Tile Drained: Systematic____ Random___
    Maximum Slope _______ (Within 492 ft of watersource. If unknown, use 7%)    		 Soil Series______________________________
    Soil Texture______________________________
    Hydrologic Soil Group(Table 15)_____________
    Soil Test: Sodium Bicarbonate P_________mg/L Ammonium Acetate K__________ mg/L
    Watercourse within 492 ft? __yes __no                                  __ in field __adjacent field

    B

    Planned Application Rate______________
    (gal/ac or ton/ac)

    Maximum Allowable Application Rate______________________(gal/ac or ton/ac)
    (From Section S)

    C

    Manure Nutrient and Application Information
    Description__________________________

    Nutrient Values
    (1st)
    (2nd Application)
    Nitrogen
    		 ____ ____ lbs/1000 gal or lb/tons
    P205
    		 ____ ____ lbs/1000 gal or lb/tons
    K20
    		 ____ ____ lbs/1000 gal or lb/tons
    "This Year’s Manure" (Line G) is calculated as Nutrient Value multiplied by Planned Application Rate

    Time of Application

    __ Late Summer
    __ Early Fall
    __ Late Fall
    __ Spring pre plant
    __ Spring Side dress

    Time to Incorporation

    __ 1 day
    __ 3 days
    __ 5 days
    __ not incorporated
    __ injected

    Agronomic Nutrient Balance (lb/acre)
    N P205 K20
    D
    Fertilizer (Total Nutrients from all Applications)
    		+________ +_______ +_________
    E
    Previous Crop
    		+________    
    F
    Previous Manure
    		+________    
    G
    This Year’s Manure
    		+________ +________ +__________
    H
    Production Requirements
    		-________ -________ -__________
    I!
    Agronomic Nutrient Balance
    * Where Agronomic Nutrient Balance exceeds 15 lb/ac, Crop Removal Balance must be completed.
    _________*
    _________*
    ___________

     

    Crop Removal Balance

    (lb/acre)

    N

    P205

    K20

    J

    Field Inputs (Line D+E+F)

    +________

    +________

    +__________

    K

    This Year’s Manure

    +________

    +________

    +__________

    L

    Crop Removal

    -________

    -________

    -_________

    M

    !

    Crop Removal Balance
    * Where Crop Removal Balance exceeds 15 lb/ac, Nitrogen Index must be completed. (Section O)


    _________*
    __________


    __________

    N

    N Available for Potential Loss

     

     

     

     

    O

    Nitrogen Index
    N-Index Value_______________(sum of)

    		 Value A1 (previous crop)_____________ +
    Value B ____________
    Maximum N-Index Value =_______________________
    (Determine from Table 14 in Section O)     		Value A2 (current crop)_______________
    Graphic of an exclamation marka high value A2 could be limiting to fall manure application in next year's plan

    P

    Phosphorus Index

    a) _________+ b)_________ + c)__________ + d)__________ + e)_________ =____________

    Q

    Minimum Separation Distance from Surface Water ________________________
    (Greatest of Table 16 or 17 in Section Q)

    R

    Useable Acres___________________
    Tillable acres – [(Setback distances Length x width) / 43,560 sq ft2]

    In this workbook "Manure" includes any agricultural source material other than commercial fertilizer.

    Back to the Nutrient Management Workbook Table of Contents

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