Foliar Greenhouse fertigation Open field fertigation

Van Iperen Oligo Iron-IDHA 9% is a highly pure and environmentally friendly Iron fertilizer, which dissolves rapidly and completely. Our product is dust free and is recommended at different phenological stages. The high level of Iron in our formula improves the production of chlorophyll. IDHA is the only biodegradable chelate available on the market.

  • Gives a strong apical zone, free of chlorosis
  • Iron 100% chelated and fully available up to a pH of 6
  • Developed for foliar application
  • Soft for leaf tissue
Foliar Greenhouse fertigation Open field fertigation
  • Rapidly dissolvable at high concentration
  • Low in Chloride
  • Brown/dark brown microgranules
  • Patented IDHA chelate fully biodegradable
  • Patented micro granulation process
  • Easy to handle, dissolve and apply

Foliar Application

Crop Application date Min kg / ha / appl Max kg / ha / appl Conc. % (w/v))
Arable crops
2 - 3 applications:
• As of 1st symptoms of chlorosis
1.0 1.5 0.02 - 0.10
Fruit trees (curative)
2 - 3 applications:
• As of 1st symptoms of chlorosis
0.5 0.6 0.02 - 0.10
Fruit trees (preventive)
1 application:
• As of end of flowering
0.5 0.6 0.02 - 0.10
Vegetables curative
2 applications:
• As of 1st symptoms of chlorosis
0.5 1.0 0.02 - 0.10
Vegetables (preventive)
1 application:
• As of generative growth
0.3 0.5 0.02 - 0.10

In case of foliar feeding as part of a mix with crop protection products, a compatibility test has to be done prior to preparing the spray-mix.

The mentioned indicated dosages and application stages are given as a guideline. Exact dosages, concentration and application stage are subject to local conditions, use of other fertilizers and can only be given after an objective diagnosis.

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Compatible with other fertilizers. The pH of the tank solution should be above 4.

Fertilizing Knowledge

How to choose an Iron chelate?

There are many options to add Iron to your crop. The most efficient way is chelated Iron for its stability, availability for the plant and its easiness to use. But choosing among the different solutions can be a challenge. How to choose? We can help you!

Find out more