ARCHIVE: Fertiliser Manual (RB209)

Oats, Rye and Triticale, winter sown – Nitrogen

  SNS Index
  0 1 2 3 4 5 6
  kg N/ha
Light sand soils 110 70 20-50 0-20 0 0 0
Other mineral soils 150 120 90 60 30 0-20 0
Organic soils       60 30 0-20 0
Peaty soils           0-20

Timing of application

Where the total nitrogen rate is less than 100 kg N/ha, apply as a single dressing by early stem extension, but not before late March. Where the total nitrogen rate is 100 kg N/ha or more, split the dressing with 40 kg N/ha in mid February-early March and the rest by early stem extension, but not before late March.

These recommendations assume appropriate measures are taken to control lodging (e.g. choice of variety, use of plant growth regulator). Reduce the recommended rate by 25 kg N/ha if lodging risk is high.

The effect of economic changes on nitrogen rates

The recommendations in the table are based on a breakeven ratio of 5.0 (see page 32). If the price of nitrogen or the price of grain changes, use the winter sown wheat table above to decide on an amount to add to or subtract from the nitrogen application.

Don’t forget to deduct nutrients applied as organic manures (see Section 2)

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