Calcium cyanamide fertiliser in carrots: Economics

Calcium cyanamide Fertiliser, also known as nitrolime, has been used in Germany as a slow release nitrogen and calcium fertiliser with liming effect for over 100 years.

This fact sheet documents the findings from a grower-led demonstration where calcium cyanamide (CaCN2) was applied as a wax coated fertiliser prior to a carrot crop in Western Australia in 2017.

Key messages:

  • Calcium cyanamide fertiliser can potentially reduce Pythium incidence and severity in carrots
  • Calcium cyanamide fertiliser can potentially reduce Pythium inoculum numbers
  • Nitrogen and liming programs should be adjusted when using calcium cyanamide fertiliser, and should be based on soil testing
  • Further work is needed to understand how long a beneficial effect will last and the economics of using calcium cyanamide fertiliser