ARCHIVE: Nitrate Vulnerable Zones (NVZs) - Guidance for Farmers. The N max limit (Leaflet 7 - PB12736g)


Part 4 of the Regulations establishes a number of rules limiting the amount of nitrogen that can be applied to specified crops. These are summarised below.


  • Ensure that the average nitrogen application rate to a specified crop type does not exceed the N max limit for that crop type
  • Follow a defined process when calculating your compliance with this limit
  • Keep annual records to demonstrate your compliance

If you are in an NVZ originally designated in 2002, you will need to comply with these rules from 1 January 2009. However, if you are in an NVZ newly designated by the 2008 Regulations, you will have until 1 January 2010.

The boxes below describe the limit in more detail and the following paragraphs provide further explanation. A step-by-step guide is provided at the back of this Leaflet to help you calculate and record your compliance.

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