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

Part 8 - NASM Plans

Table of Contents

  1. Review, Updating and Summary of a NASM Plan
  2. Required Contents of a NASM Plan

8.1 Review, Updating and Summary of a NASM Plan

A NASM plan can be prepared for one year or up to five years. If a NASM plan has a duration of more than one year then it must be reviewed by the operator annually to ensure that it accurately reflects the anticipated operation on the farm unit during the following year. The NASM plan must be reviewed and confirm activity that took place in the preceding year. The summary should include the details of the application such as the source, type and quantity of NASM applied on each field within the NASM application area and the nutrient and metal loading rates of the application. This review and summary can be used to explain any difference between the projections in the NASM plan and the records kept of actual events.

8.2 Required Contents of a NASM Plan

8.2.1 Components of the NASM Plan

The following components must be in included in the NASM plan:

  • A list of the sources of NASM
  • Analysis of applicable parameters such as nutrient content or nutrient values, tests for metals, pathogens and other parameters
  • Establishment of beneficial use of the NASM
  • Determination of maximum application rate as determined by the limits set in section 8.2.5
  • NASM application area information including sufficient information to locate the property ( i.e. lot and concession, 911 address, tax roll assessment number , property identification number)
  • Cropping practices
  • Nutrient application
  • Land base information
  • List of storages if used for NASM including locations, type of storage (temporary/permanent), description of permanent storage facilities (storage tanks, lagoons) and storage capacity

8.2.2 NASM Sources

The NASM plan must list the source of the material that is to be land applied including the NASM Category, metals concentration, pathogen levels and odour classifications. The information should include the type and location of the generator.

8.2.3 Nutrient Information, Analysis of Nutrient Content

A nutrient analysis for each of the prescribed materials listed in the NASM plan must be provided. The nutrient analysis can be determined by conducting laboratory analysis (required for NASM) or by applying the average values in Table 2 found in the Nutrient Management Tables document only for agricultural source materials.

Sampling and laboratory analysis must be done by an accredited laboratory using proper methods as set out in Parts IX and IX.1 of the Regulation and the Sampling and Analysis Protocol.

8.2.4 Beneficial Use

There is a general prohibition based on beneficial use. The material must be able to demonstrate that it is for the purpose of improving the growing of agricultural crops.

NASM can not be applied to agricultural land unless it meets at least one of the criteria in Section 98.0.6 of the Regulation. In order to determine the plant available nitrogen (PAN), the plant available phosphorous (PAP) and the plant available potassium (PAK) the following formulae apply:

Liquid NASM:
  • total concentration of PAN in mg/L + PAP in mg/L +PAK in mg/L must be greater than 140 mg per Litre
    • PAN (Plant Available Nitrogen) is calculated as follows:
      • (Ammonia-N + ammonium-N) + (nitrite-N + nitrate-N) + (0.3*(Organic-N) = PAN
      • Organic-N = ( Total Kjeldahl nitrogen - (ammonia + ammonium-N))
    • PAP (Plant Available Phosphate) is calculated as follows:
      • (0.4*(Total Phosphorus * 2.29)) = PAP
      • PAK (Plant Available Potassium) is calculated as follows:
        • (0.9*(Total Potassium * 1.2)) = PAK
Solid NASM:
  • total concentration of PAN in mg/Kg (calculated on a dry weight basis) + PAP in mg/Kg (calculated on a dry weight basis) +PAK in mg/Kg (calculated on a dry weight basis)must be greater than 13 000 mg per Kg calculated on a dry weight basis.

8.2.5 Nutrient Application Rates

The underlying principle is that a number of maximum application rates are determined based on a number of criteria (metal, nutrients etc.) and the most restrictive application rate will govern.

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 NASM application area (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 NASM plan. The application rates also are balanced using the agronomic and crop removal balances as described below in 8.2.8.1 and 8.2.8.2. The NASM plan 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 NASM plan must show the total amount that is expected to be applied in the year as the maximum annual nutrient application rate.

There is an overarching upper limit that applies to all NASM as outlined in Section 98.0.7 of the Regulation:

  • the maximum total yearly application of PAN, as calculated in 8.2.4, is equivalent to crop requirement or crop removal but can not exceed 200 kg/ha in any 12 month consecutive period
  • the maximum total application rate for phosphate is that which results in a crop removal balance plus 390 kilograms or less of phosphate per hectare over any consecutive 5 year period (see 8.2.8.2)
8.2.5.1 Category 1 NASM Materials

These materials have two possible methods of determining maximum application rates that could govern:

  1. Absolute limit: A maximum application rate of 20 tonne of Category 1 NASM /hectare in any consecutive 12 month period for all Category 1 NASM calculated on a wet weight basis or
  2. Sampling method: If the 20 tonnes are to be exceeded, then associated sampling and analysis will be required for PAN and PAP as outlined in Section 8.2.5.2.

8.2.5.2 Category 2 and 3 NASM Materials

Category 2 and 3 NASM material application rates are limited by 7 possible parameters:

1. Nitrogen

The material is sampled to determine its PAN content in kg/tonne using the formula outlined above in 8.2.4:

Once the sampling results are obtained they are plugged into the following formula:

[(Crop Production requirements in Kg of PAN/hectare or Crop Removal in kg of PAN/ hectare) minus crop production requirements supplied by other nutrient sources in kg of PAN / hectare] all divided by PAN in kg/tonne of NASM material = maximum application rate of NASM in tonnes per hectare of material

The NASM maximum application rate is a yearly rate - the idea is that in any 12 month period they must not exceed the maximum application rate.

2. Phosphorus

PAP (Plant Available Phosphate) is calculated as follows:

(0.4*(Total Phosphorus * 2.29)) = PAP for the year of application

(0.8*(Total Phosphorus * 2.29)) = PAP for the longer term

3. Category 2 & 3 maximum regulated metal loading rate:

With respect to the 11 regulated metals there are two prohibitions:

  • If any metal concentration in the soil exceeds the amounts set out in the table in the Regulation section 98.0.12(3 ) then NASM that is CM2 cannot be applied unless approved by the Director.
  • If any metal concentration in the NASM exceeds the CM2 limit as set out in Schedule 5, Table 2 in the Regulation then NASM cannot be applied

To determine a maximum application rate in relation to the regulated metals the idea is that you add the content (kg) of each regulated metal for all NASM that is CM2 being applied to the land in any consecutive 5 year period and the total value can not exceed the 5 year metal loading set out in the table in the Regulation section 98.0.12(1). If the combination of the metal content in the NASM and the application rate exceeds the limits in the table in 98.0.12(3), then the application rate can be lowered until the level is not exceeded. This lower application rate would be the maximum application rate based on that particular regulated metal.

4. Sodium (Na) Loading Maximum application rate (where the tables in Schedule 4 of the Regulation indicates sampling is required or if the Director indicates sampling is required):

The maximum application rate for NASM based on Sodium will depend on the Hydrologic Soil Group where the NASM will be applied. The Hydrologic Soil Group information can be found in the Drainage Guide.

The idea is that you calculate the Na content for all NASM for which sodium testing is required:

  • either identified in listed materials in Schedule 4, Tables 2 and 3 in the Regulation or
  • for unlisted materials, set out in an approved NASM plan, being applied to the land in any consecutive 12 month period, and the total value can not exceed the numbers set out below:
    • If your land is identified as being a Hydrologic Soil Group A or B the limit is 200 kg Na/ha/yr (in any consecutive12 month period)
    • If your land is identified as being a Hydrologic Soil Group C or D the limit is 500 kg Na/ha/yr (in any consecutive 12 month period)
5. Fats, Oils Grease (FOG) Loading Maximum application rate (where the tables in schedule 4 of the Regulation indicates sampling is required or if the Director indicates sampling is required):

The maximum application rate for NASM based on FOG will depend on the Hydrologic Soil Group where the NASM will be applied. The Hydrologic Soil Group information can be found in Drainage Guide.

You add the FOG content for all NASM for which FOG testing is required and are to be applied to the land in any consecutive 12 month period and the total value can not exceed the numbers set out below:

  • If your land is identified as being a Hydrologic Soil Group C or D the limit is 2500 kg FOG/ha/yr (in any consecutive 12 month period)
  • If your land is identified as being a Hydrologic Soil Group A or B the limit is 5000 kg FOG/ha/yr (in any consecutive 12 month period)
6. Boron (B) Loading Maximum application rate (where the tables in schedule 4 of the Regulation indicates sampling is required or if the Director indicates sampling is required):

You calculate the B content for all NASM for which boron testing is required and which are being applied to the land in any consecutive 12 month period and the total value can not exceed 1 kg B/hectare/yr.

7. One additional factor for calculating maximum application rates for sewage biosolids or materials containing human body waste;

In addition to the above where you are land applying sewage biosolids or materials containing human body waste there is a maximum application rate for sewage biosolids or materials containing human body waste so that they can only be applied at a rate of up to 22 tonnes (dry weight)/ha/5yr (in any 5 years)

Note: "sewage biosolids or materials containing human body waste" includes materials that result from the processing of materials that include sewage biosolids or human body waste.

As well as the standard 7 limits listed above, the Director could assign additional tests as a condition of the NASM plan approval.

8.2.6 NASM Application Area Information

All land identified in the farm unit that will receive NASM must be included in a NASM plan if NASM are to be applied to this land during the plan period. The farm unit operation identifier should be specified and its relationship to other land within the farm unit should be shown.

8.2.6.1 Field Properties

The following field properties must be provided in the NASM plan for each NASM application area identified in the farm unit:

  • The total tillable area for each field.
  • 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.
  • The percentage of maximum sustained slope near the surface water if the field is within 150 metres of surface water.
  • Predominant soil series and soil texture for the field.
8.2.6.2 Field Sketch

A sketch for each field in the NASM application area is required. The sketch must be prepared based on an on-site assessment. The sketch must include the date the on-site assessment was done and the name of the person conducting the assessment. 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):
    • Areas where the soil depth is less than 30 cm and rock outcrops
    • Areas subject to ponding
    • the location of non-agricultural land uses,(dwellings, residential areas and commercial, community or institutional use)
    • the location of any municipal wells within 100 metres of the field boundary,
    • the location of all other known wells within 90 metres of the field boundary,
    • the location of all surface water within 150 metres of the NASM application area,
    • 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.
8.2.6.3 Soil Sampling and Analysis

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

8.2.7 Cropping Practices, Crop Rotation and Yields

The following information is required for each field in the NASM plan:

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

8.2.8 Nutrient Application

Commercial Fertilizer Application

All liquid and solid commercial fertilizer to be applied must be identified for the entire duration of the NASM plan. 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.

Application of Prescribed Materials and Limits

For each prescribed material listed in section 8.2.3 above, "Nutrient Information, Analysis of Nutrient Content" the NASM plan must identify the following for the entire duration of the NASM plan:

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

Note: Each of the components in this Part apply to all nutrients including agricultural source materials, non-agricultural source materials, compost that meets 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 Sampling, Analysis and Quality Standards, and Land Application Rates in the regulation.

8.2.8.1 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.
8.2.8.2 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 for 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.

8.2.9 Land Base Information

Demonstration of Adequate Land Base

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

8.2.10 Storages

If any NASM material is to be stored on the farm and the storage was built after June 30, 2003 or is proposed to be constructed, then it is subject to the Part VIII requirements of the Regulation and should be shown on the NASM plan, unless the storage facility is subject to a certificate of approval or provisional certificate of approval under Part V of the Environmental Protection Act.

NASM storage facilities on the NASM plan area must be listed. For each storage facility under Part VII of the Regulation, a written description is required that gives the capacity, dimensions and type of storage (for example: circular, rectangle, pile, covered, exposed to precipitation). Nutrient storage facilities must comply with "Part VIII: Siting and Construction Standards". In the case of the NASM storages there should also be a list of associated NASM application areas where the NASM will be applied.


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: 114 September 2009