2009 Nutrient Management Protocol for Ontario Regulation 267/03 Made under the Nutrient Management Act, 2002

Part 7 - Nutrient Management Plans

Table of Contents

  1. Review and Updating of a Nutrient Management Plan
  2. Required Contents of a Nutrient Management Plan (Regulation Part III)

7.1 Review and Updating of a Nutrient Management Plan

A NMP must be reviewed, updated and summarized by the farm unit operator annually to ensure that it accurately reflects the anticipated operation on the farm unit during the following year and summarizes the activities carried out under it during the previous year. The summary must explain any difference between the projections in the NMP and the records kept of actual events.

7.2 Required Contents of a Nutrient Management Plan (Regulation Part III)

7.2.1 Components of the Nutrient Management Plan

  • Analysis of nutrient content or nutrient values provided in Table 2 in the Nutrient Management Tables document
  • Field information
  • Cropping practices
  • Nutrient application
  • Nutrient application rates
  • Land base information

7.2.2 Nutrient Information, Analysis of Nutrient Content

A nutrient analysis for each of the prescribed materials listed in the NMS must be provided. The nutrient analysis can be determined either by conducting laboratory analysis or by applying the average values found in the Manure Databank, Table 2 as found in the Nutrient Management Tables document. The databank is currently part of the NMAN program and depends on the type of prescribed material and the percentage of dry matter projected to be in the material.

Sampling and laboratory analysis must be done by an accredited laboratory as set out in Parts IX and IX.1 of the Regulation. If laboratory analysis produces results that vary by more than 30% of the average values found in Table 2 as found in the Nutrient Management Tables document, the Manure Databank, documentation is required to justify the difference. It should be noted that management practices or feed additives could potentially alter the nutrient content of a farm animal's manure.

If manure nutrients are modified due to the use of feed additives, adequate information must be attached to verify that the feed additive was actually used, and to verify the influence of the additive on the nutrient content of the manure. In addition, records must be maintained to confirm the continued use of the additive.

7.2.3 Field Information

All land identified in the farm unit must be included in a field section if prescribed materials are to be applied to this land during the NMP period.

7.2.3.1 Field Properties

The following field properties must be provided in the NMP for each field identified in the farm unit:

  1. The total tillable area for each field.
  2. . The total tillable area available for nutrient application. Note: this is determined by subtracting the area not available for nutrient application due to required setbacks from the total tillable area for each field.
  3. The percentage of maximum sustained slope near the surface water if the field is within 150 metres of surface water.
  4. A statement as to whether the field is tile drained.
  5. Predominant soil series and soil texture for the field.
  6. A statement regarding the presence or absence of known wells within regulated distances of the field boundaries.
  7. A statement as to whether surface water is adjacent to, or contained within, the field.
7.2.3.2 Field Sketch

Many of the field properties are required in the format of a sketch for each field in the farm unit. The sketch must address the following field components:

  • field identifier (from Farm Unit Declaration)
  • sections within the field, if the field has more than one section, including individual field locations and boundaries
  • whether the field has tile drains and, if so, the location of the tile inlets and tile outlets
  • the following features must also be included on the sketch (or where the features do not exist, a statement indicating this must be included):
    • the location of all surface water,
    • the location of non-agricultural land uses,
    • the location of any municipal wells within 100 metres of the field boundary,
    • if land applying biosolids, the location of all other known wells within 90 metres of the field boundary,
    • if land applying only agricultural source material, the location of all other known wells within 30 metres of the field boundary,
    • the maximum sustained slopes within 150 metres of the top of bank of all surface water, and
    • the separation distances for surface water required to meet the regulatory requirements.
7.2.3.3 Soil Sampling and Analysis

Soil sampling and analysis is to be performed according to Part IX of the Regulation.

7.2.4 Cropping Practices, Crop Rotation and Yields

The following information is required for each field in the NMP:

  • crop rotation for the duration of the NMP;
  • expected planting and harvest dates;
  • expected crop yields for the duration of the NMP; and
  • previous years' crops.

7.2.5 Nutrient Application

7.2.5.1 Commercial Fertilizer Application

All liquid and solid commercial fertilizer to be applied must be identified for the entire duration of the NMP. This includes, but is not limited to: starter, pop-up, side-dressed, broadcast, banded, foliar, fertigated, incorporated or unincorporated applications.

For each application, the application date, incorporation method and amount of nutrient application must be identified.

7.2.5.2 Application of Prescribed Materials and Limits

For each prescribed material listed in section 7.2.2 above, "Prescribed Materials Applied to Land in the Farm Unit" the NMP must identify the following for the entire duration of the NMP:

  • prescribed material type and form;
  • expected application date;
  • expected application method;
  • expected timing for incorporation; and
  • expected application frequency;

7.2.6 Nutrient Application Rates

A rate of application for each prescribed material intended to be applied to land must be determined for each part of the land managed in the farm unit (for example: each field, group of fields or field section). Application rates are based on many factors including: the characteristics of the land and cropping and nutrient information set out in the NMP. The application rates also are balanced using the agronomic and crop removal balances as described below. The NMP must show the number of times that nutrients will be applied in the year in order to demonstrate the maximum rate per application of nutrients. In addition, the NMP must show the total amount that is expected to be applied in the year as the maximum annual nutrient application rate.

Note: Each of the components in this Part apply to all nutrients, including agricultural source materials, non-agricultural source materials, compost that meets the requirements for Category AA or A compost in Part II of the Compost Standards, for the period until January 1, 2014 compost that meets the criteria set out in subsection 1(1.1) of the Regulation and commercial fertilizers. The nutrient application rate must be calculated in accordance with the Sampling, Analysis and Quality Standards, and Land Application Rates in the Regulation.

7.2.6.1 Agronomic and Crop Removal Balance of Nitrogen

To determine the limits for nitrogen application you must calculate the Agronomic Balance and, if needed, the Crop Removal Balance as set out below:

  • Agronomic Balance: Agronomic Balance is the total available nitrogen from all applied nutrients minus crop production requirements (these requirements may be based on OMAFRA crop fertilizer recommendations).
  • Crop Removal Balance: Total available nitrogen minus the nitrogen removed from the field with the crop when it is harvested.
7.2.6.2 Agronomic and Crop Removal Balance for Phosphorus

To determine the limits for phosphorus application you must calculate the Agronomic Balance and, if needed, the Crop Removal Balance as set out below:

  • Agronomic Balance: Agronomic Balance is the total available phosphate from all applied nutrients (calculated using 40% of the total phosphate in prescribed materials in the year it is applied) minus the crop production requirements (these requirements may be based on OMAFRA crop fertilizer recommendations).
  • Crop Removal Balance: Total available phosphate (calculated using 80% of the total phosphate in prescribed material applied because phosphorus becomes available over time for use by future crops) minus the phosphate removed from the field with the crop when it is harvested.
7.2.6.3 Common Land Application Setback and Other Requirements from Regulation Part VI

The NMP must also include the requirements found in Part VI of the Regulation.

7.2.7 Land Base Information

Demonstration of Adequate Land base

The NMP must demonstrate that a sufficient land base exists for the application of all the nutrients identified for land application to the farm unit so that none of the allowable application rates are exceeded and all of the setbacks are met.


For more information:
Toll Free: 1-877-424-1300
E-mail: ag.info.omafra@ontario.ca
Author: OMAFRA Staff
Creation Date: 14 September 2009
Last Reviewed: 14 September 2009