Chelate Benefits - ADOB aa

ZnSO4 · 7H2O (0.3% w/w aqueous solution)
Solubility is pH-dependent. Even neutral or slightly basic pH prevents the production of a homogeneous solution. The photos were taken immediately after preparation.

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ZnSO4 · 7H2O (0.3% w/w aqueous solution)
Solubility is pH-dependent. Even neutral or slightly basic pH prevents the production of a homogeneous solution. The photos were taken 15 minutes after preparation.

Chelated micronutrients

Chelated Zn, e.g. Zn-HBED
In high pH solution, chelated zinc is fully protected against the reactive hydroxyl anions (OH–). All the Zn2+ contents will be taken up by the plant.

Non-chelated micronutrients

Crystalline Zn salt, e.g. ZnSo4
In high pH solutions, zinc cations are not protected, so under the attack of hydroxyl anions (OH–) they will rapidly precipitate in the form of zinc hydroxide Zn(OH)2, resulting in Zn unavailability to plant roots or leaves.

Chelated micronutrients

Chelated Mn, e.g. Mn-DTPA
Manganese cations in the manganese chelate are fully protected against the reactive phosphate anions (PO43–). All the Mn2+ contents will be taken up by the plant.

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Non-chelated micronutrients

Crystalline Mn salt, e.g. MnSO4
Manganese cations are not protected, so under the attack of phosphate anions (PO43–), all the Mn2+ contents will leave the solution in the form of manganese phosphate Mn3(PO4)2 precipitate, resulting in Mn unavailability to plant roots or leaves.

Chelated micronutrients are often considered to be better than sulphated micronutrients because they are more readily available for plants to absorb and use. Chelated micronutrients are micronutrients that are chemically bonded to an organic molecule, such as an amino acid, which helps to protect the micronutrient from reacting with other compounds in the soil that can make it unavailable for plant uptake. This means that chelated micronutrients can remain in a soluble, plant-available form for a longer period of time, allowing plants to absorb them more efficiently.

Sulphated micronutrients, on the other hand, are micronutrients that are combined with sulphur, which can make them less available to plants. Sulphur is a nutrient that is important for plant growth, but in some soils, there may be excess sulphur that can compete with other micronutrients for uptake by plants. This can make it more difficult for plants to absorb sulphated micronutrients, reducing their effectiveness.

Overall, chelated micronutrients are considered to be a more efficient and effective way to deliver micronutrients to plants, particularly in soils where micronutrient availability may be limited. However, the specific needs of a particular crop and soil conditions should always be considered when choosing a micronutrient fertilizer.

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