Foliar Greenhouse fertigation Open field fertigation

Van Iperen Potassium Nitrate Horticultural Grade is a highly pure Potassium fertilizer, free of Sulphate, which dissolve rapidely and completely. Our product is not sensitive to caking and is recommended during fruit or tuber development, especially during periods of drought. The high level of Potassium in our formula improves the cell pressure and regulates the functioning of stomata. Furthemore, the presence of Nitrogen has a positive effect on the uptake of Potassium in the plant.

  • Improves fruit quality, shelflife and increases plant drought resistance
  • Easy to handle, dissolve and apply
  • Developed for fertigation in open field and greenhouses. Also suitable for foliar application
Foliar Greenhouse fertigation Open field fertigation
  • Low on heavy metals
  • Low on Sodium and Chloride
  • White crystals

Hydroponics

Kg in 1.000 l stock solution K2O in kg Total N in kg N-NO3 in kg
100 46 13 13
150 69 19.5 19.5
200 92 26 26
250 115 32.5 32.5

Mentioned concentrations represents the amount of nutrients in the stock solution. The final concentration in the irrigation water depends on the amount of nutrients in the stock solution, the injection ratio and the amount of nutrients used in the water.

Fertigation

Crop Application date Min kg/ha/season Max kg/ha/season
Fruit trees
• As of start of fertigation
• Until 4 weeks before harvesting
150 400
Vegetables
• As of vegetative growth
• Until 2 weeks before harvesting
100 300
Banana
• During entire fertigation program 200 500
Citrus (adult)
• During entire fertigation program 150 400
Potato
• As of tuber setting
• Until tuber ripening
100 200
Tomato
• As of 4 weeks after planting
• Until fruit ripening
150 300
Table grape
• As of start of fertigation
• Until 4 weeks before harvesting
100 250
Vineyards (adult)
• As of start of fertigation
• Until 4 weeks before harvesting
100 250

Foliar Application

Crop Application date Min kg / ha / appl Max kg / ha / appl Conc. % (w/v))
Vegetables
2 - 4 applications:
• As of fruit setting
• 10 - 14 days interval
4 8 0.5 - 1.0
Citrus
1 application:
• During fruit filling
6 15 1.5 - 2.5
Banana
5 - 9 applications:
• As of transplanting
• Until fruit filling
6 15 1.0 - 2.0
Olive
3 - 4 applications:
• Spring application
• During vegetative growth
• During fruit filling
8 18 1.5 - 2.5
Stone fruit
2 - 3 applications:
• As of fruit setting
• Until fruit colouring
5 10 1.0 - 1.5
Pip fruit
1 - 3 applications:
• As of end of flowering
• Until fruit filling
4 12 0.5 - 1.5

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.

Fertilizing Knowledge

Factory of Van Iperen partner Lovochemie

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