Commercial Fertilizers, Pulp Sludge, and Soil Amendments2017-11-24T13:27:51-05:00
Can fertilizers be stored with agricultural chemicals?2017-11-03T16:25:48-04:00

Yes, fertilizers that are contained (e.g., bag, jug or tote) can be stored in the same storage as agricultural chemicals except where prohibited by applicable regulations. While the fertilizers can be stored in the same storage (e.g., the chemical storage shed) as agricultural chemicals, they must still be separate to prevent cross contamination.

November 3rd, 2017 at 04:25 pm
What is the ‘prevailing legislation’ in Canada for pulp sludge and soil amendments?2023-10-04T15:05:18-04:00

In the CanadaGAP Food Safety manuals, ‘pulp sludge’ and ‘soil amendments’ are defined as the following:

Pulp sludge: A solid residue that remains after wastewater is treated at pulp and paper mills. It is composed of input materials for making paper, which are primarily wood fibre, lime, clays, as well as excess organisms produced as part of the wastewater treatment process.

 Soil amendments: Ashes, gypsum and liming materials added to the soil for the purpose of improving the chemical properties (e.g., pH) of the soil. If liming materials are derived from biosolids, see requirements for sewage sludge/biosolids. If liming materials are derived from pulp and paper waste, refer to the requirements for the application of pulp sludge.

The requirements for pulp sludge and soil amendments are found in Section 3.

Section 3.1 states: The person responsible purchases or selects:…

 Pulp sludge that meets prevailing legislation (e.g., provincial regulations)

 Soil amendments that meet prevailing legislation (e.g., provincial regulations)

Federally, the Fertilizers Act and regulations requires that all regulated fertilizer and supplement products imported into or sold in Canada must be safe for humans, plants, animals, and the environment. If any pulp sludge or soil amendments are being sold as a fertilizer it would be covered federally under the Fertilizers Act.

Provincial regulations/requirements vary by location. In some cases, provinces do not have specific regulations (these types of materials might not be used, or they might not have specific regulations/requirements). For some provinces only some of these types of products have additional requirements.

The following table outlines some provinces where there are requirements in place:

Province Managed by Link/resource and other information
British Columbia Environmental Management Act and Public Health Act

Code of practice for soil amendments includes both pulp sludge and soil amendments.

Alberta Alberta Environmental Protection

Standards and guidelines for the land application of mechanical pulp mill sludge to agricultural land (last updated Feb 1999)

Standards and guidelines for the use of wood ash as a liming material for agricultural soils (last updated July 2002)

Ontario Ontario Ministry of Agriculture, Food and Rural Affairs (OMAFRA)

Pulp and paper biosolids are considered “Non-Agricultural Source Materials (NASM)

Quebec Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs

The use of some of these materials are covered under ‘Fertilizing Residuals’ according to the guidance here:

New Brunswick The Department of Environment and Local Government The use of some products is covered under the “Guidelines For The Beneficial Use of Industrial By-Products as Soil Amendments”.
Newfoundland and Labrador

Department of Environment and Climate Change


Department of Fisheries, Forestry and Agriculture

The use of pulp sludge and wood ash on agricultural lands would need Department of Environment and Climate Change approval in consultation with the Department of Fisheries, Forestry and Agriculture’s Soil Fertility Specialist.

Limestone application to agriculture land has been promoted by the Department of Fisheries, Forestry and Agriculture as part of the Limestone Program (soils are very acidic by nature and liming soils is crucial to increase crop productivity and fertilizer efficiency).

October 4th, 2023 at 03:05 pm

November 24th, 2017 at 01:27 pm
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