Chelated compounds are more stable than non-chelated compounds. Therefore, metallic chelates are widely used in agriculture as micronutrient fertilizers to supply plants with Iron, Manganese, Zinc and Copper. The most common chelates used in agriculture are EDTA, DTPA and EDDHA.

A type of organic molecule called a chelate may help to make nutrients available that, due to soil conditions, could not otherwise be taken up by the plant. The chelator molecule envelops the ion (magnesium calcium, iron, zinc and others), binding to it and preventing interaction with other ions in the soil.




The example shows how a nutrient combines with specific organic molecules in two or more places to form a ring structure form called chelate. Metal chelation is important because it makes metal ions more available for uptake by plants.




The organic coating around the chelated nutrient allows it to penetrate through the wax into the leaf. Once in the leaf, the chelate releases the nutrient so that it can be used by the plant.



The bond between the organic chemical and the inorganic nutrient must be strong enough to protect the nutrient, but must be weak enough to release the nutrient once it gets into the plant. Also, the chelating agent must not be harmful to plants.

The significance of chelation process

1.  Increase the availability of nutrients

2. Prevent mineral nutrients from forming insoluble precipitates

3. Prevent nutrients from leaching

4. Increase mobility of plant nutrients

5. Suppress the growth of plant pathogens


Chelated Micronutrients

Lima Europe's chelates guarantee correct absorption and assimilation of the oligo-elements by the crops,
thus avoiding possible precipitation or the forming of non-soluble products that could decrease their efficacy.