
Van Iperen Potassium Nitrate Horticultural Grade is a highly pure Potassium fertilizer, which dissolve rapidly and completely. Our product is not sensitive to caking and is recommended during fruit or tuber development. The high level of Potassium plays an important role in achieving higher yields with optimal quality, and affects overall plant performance. Furthermore, the presence of Nitrate Nitrogen has a positive effect on the uptake of Potassium in the plant and is crucial during fruit sizing.
- Improves fruit quality, shelf life and increases plant drought resistance
- Developed for fertigation in open field and greenhouses. Also suitable for foliar application

- Low on heavy metals
- Low on Sodium and Chloride
- Production process certified according to ISO 9001:2008
- Easy to handle, dissolve and apply
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.