No application of nitrogen or phosphorus containing products/materials is permitted after midnight Nov 12, 2021. This is due to due to expectations of snow cover, frozen soils and below freezing temperatures.

What this means:

  • Nutrients are not to be surface-applied without immediate incorporation.
  • Nutrients are not to be applied within Nutrient Management Zone N4 or the Nutrient Buffer Zone.
  • Nutrients are not to be applied to poorly or very poorly drained soils including coarse textured Gleysols with improved drainage (for example agriculture capability class 4W, 5W and 6W soils) that are saturated for extended periods during spring thaw.
  • Nutrients are not be applied to erosive soils located near watercourses but outside the Nutrient Buffer Zone.
  • The agricultural producer is obliged to assess current weather conditions and periodically check weather forecasts when applying nutrients after November 9th. Nutrients should not be applied in instances where the weather outlook is unfavourable such as if snow or an appreciable amount of rainfall is expected that would result in runoff.
  • All other requirements of the Nutrient Management Regulation and the Livestock Manure and Mortalities Management Regulation remain in effect.
  • All other local, federal and provincial legislation must be followed.

For the latest information on the Manitoba Restriction on Winter Application of Nutrients variance go to or for complete details on Winter Nutrient Application Restrictions

CAAR is a member of the stakeholder committee providing insights to variance decisions.

Agriculture retailers, may forward questions and recommendations relating to Manitoba Restriction on Winter Application of Nutrients to:

Mitch Rezansoff
Executive Director, CAAR
P: 204.989.9303
E: or 204.989.9303.


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