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Technically, there is no problem using DTPA 3% iron chelate. Request a quote or more information


The most used liquid DTPA chelates are 3% and 6%. The 3% version is based on sodium and the 6% is based on ammonium. The 6% is the highest quality DTPA that is available in the market and is completely free of sodium and sulphate.

Technically, there is no problem using DTPA 3% iron chelate. DTPA 7 and 11% are fixed forms. The DTPA 7% is the fixed variant on the liquid DTPA 3%, and the STPA 11% is the fixed variant of the liquid DTPA 6%.


  • Possible causes of iron deficiency in the plant.
  • Soils with a low organic particle content.
  • Soils with a lot of chalk fixing iron.
  • High manganese values (antagonism).
  • Excessive use of phosphate, or high phosphate values in the soil.
  • High pH value of the soil.

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