MASTER is a complex of iron chelated by EDDHA, which gives the product a good stability at high pH and in calcareous soil conditions. It is used for the prevention and correction of iron chlorosis in various crops.


System and time of application

MASTER can be applied directly to the soil by any irrigation system, after water dilution, and can be applied to any stage of the harvest cycle when chlorosis is appreciated. Make sure that the irrigation equipment is clean after its use to prevent corrosion. Use only when there is a recognized need. Do not exceed the recommended dose.

Stability and storage

MASTER is stable for at least three years since manufacturing date. Store in the closed original container in a cool and ventilated area. DO NOT store for prolonged periods in direct sunlight. Keep away from food, drink and animal feed. Keep out of the reach of children.


MASTER is compatible with most commonly used fertilizer products in cultures where it is recommended. Whenever possible, it has to perform a compatibility test in a small volume.


Water soluble iron (Fe) at 6.5% by mass*
Iron (Fe-EDDHA*) at 5.5% by mass*
*Ethylenediamine—N,N’-bis(2-hydroxyphenylacetic acid)
Content of the ortho-ortho substituted isomer is at 1.5% and of the ortho-para substituted isomer at 4.0% by mass*

Dosing according to the crop



Horticultural crops (short cycle) 5 – 10
Horticultural crops (long cycle) 10 – 20
Citrics p> 5 – 60 g/tree
Fruits (apple, pear, peach and cherry trees) 25 – 50 g/tree
Strawberry 6 – 20 g/tree
Banana tree 0,5g – 1g/tree
Grapewine, kiwi 6 – 20 g/plant
Seeds 0,5g – 1g/m2
Ornamentals 3g/m2