Fertilizer burn

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Fertilizer burn on a leaf

Fertiliser burn is defined as leaf scorch resulting from over-fertilisation, usually referring to excess nitrogen salts[1][2][3]

Fertiliser burn is the result of desiccation of plant tissues due to osmotic stress, creating a state of hypertonicity.

Fertilizers vary in their tendency to burn roughly in accordance with their salt index.[4]

Treatment

Fertiliser burn can be remedied by soaking the soil with water to flush out excess salts.[1] It can be prevented by applying only dilute or controlled-release fertilizer products.[1][5]

See also

References

  1. ↑ 1.0 1.1 1.2 http://ir.library.oregonstate.edu/jspui/handle/1957/14367
  2. ↑ http://plantclinic.cornell.edu/FactSheets/leafscorch/leafscorch.htm
  3. ↑ http://www.aos.org/AM/Template.cfm?Section=pests_and_diseases&CONTENTID=5718&TEMPLATE=/CM/ContentDisplay.cfm
  4. ↑ Understanding Salt index of fertilizers.
  5. ↑ http://www.plantanswers.com/garden_column/march04/3.htm
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