Foliar Greenhouse fertigation Open field fertigation

Van Iperen WS NPKs are top quality blends made from the purest raw materials, with limited caking sensitivity and with high level EDTA-chelated micro-nutrients for fertigation or foliar application. Van Iperen WS NPK | 15 - 30 - 15 + 2 MgO + TE is part of our Energy Start line. Our Energy Start line comes with high Phosphate formulas, destined to be used during critical early stages to help inducing proper plant establishment, quality rooting, and optimal flowering. Succeeding in early plant development is crucial to secure good yields and optimum crop performance.

  • Improves root and shoot growth
  • Micronutrients 100% chelated and fully available
  • Developed for fertigation in open field and greenhouses. Also suitable for soil injection
  • Produced in a broad range of intense colours, to distinguish the product and the final solution
Foliar Greenhouse fertigation Open field fertigation
  • Rapidly dissolvable
  • Available in 9 intense colours
  • Easy to handle, dissolve and apply
  • Production process certified according to ISO 9001:2015


Crop Application date Min kg/ha/season Max kg/ha/season
• As of start of fertigation
• Until start of tuber filling
100 200
Fruit trees
• As of start of fertigation
• Until start of fruit development
100 200
Fruit vegetables
• As of transplanting
• Until start of production phase
100 250

Foliar Application

Crop Application date Min kg / ha / appl Max kg / ha / appl Conc. % (w/v))
Fruit trees
1 - 3 applications:
• Starting pink bud
• Until fruit development
• 7 - 10 days interval
4 12 0.4 - 1.2
• Before bud opening 4 10 0.4 - 0.8
• During 3 - 4 leaves stage 2 6 0.5 - 1.0
3 applications:
• During flower bud opening
• During fruit setting
• During fruit filling
5 8 0.5 - 1.0
• As of vegetative growth
• Until 4 weeks before harvesting
3 6 0.5 - 1.0

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.

Please fill your credentials to receive the downloads by email.

  • This field is for validation purposes and should be left unchanged.

Compatible with other fertilizers, with the exception of Calcium fertilizers. Therefore a separate tank is needed or fertilizers should be applied on different times. The pH of the tank solution should be above 4.