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Nutrient Benefits


  • High Cl levels can reduce the availability
  • of Phosphorus
  • Chloride uptake is reduced when high N-NO3-, SO4-, B or Mo


  • Chlorides stimulate mono and divalent cations ( K+, Zn2+, …)


  • Cation balance, transport
  • Diminishes effect of fungal infections
  • May compete with nitrate uptake, promoting use of ammonium, which may factor in its role in disease suppression
  • Works in tandem with K for the proper function of stomatal openings, controlling internal water balance
  • Photosynthesis specifically the control of gas/water exchange

Deficiency Symptoms

  • Wilting
  • Restricted, highly branched root system
  • Leaf mottling
  • Leaflet blade tip wilting with chlorosis
  • In cabbage, absence of cabbage odour

Factors Affecting Availability

  • Areas where rainfall is high and internal soil drainage is good, Cl can be leached from the soil
  • Soils where potash fertilizer is not regularly applied
  • Inland regions are generally less in chloride disposition versus coastal regions
  • When there is an excess of N, S, B, and/or Mo

Sensitive Crops

  • Alfalfa, broccoli, brussel sprouts, cabbage, cauliflower, lettuce, oil palm, potato, small grains, beets, tomatoes, cereals, canola, canary seed


The following OMEX products can assist with addressing and correcting Chloride deficiency:

Visual Guide