Terminology of deficient, toxicity symptoms


  • Deficient: When an essential element is at a low concentration in plant that severely limits the plant growth and produces more or less distinct deficiency symptoms on plants. Under such conditions the yield of crop will be low / the quality of produce will be inferior.
  • Insufficient: When the level of an essential nutrient is below their actual content in plant or available in an inadequate amounts that also affect the plant growth and development.
  • Toxic: When the concentration of an element in plants is very high this affects the plant growth severely and produces toxicity symptoms on plants.
  • Excessive: When the concentration of an essential nutrient is sufficiently high but not toxic. It results in a corresponding shortage of other nutrients.

Last modified: Tuesday, 26 June 2012, 1:27 PM