Certifications
Van Iperen GreenSwitch® Potassium Sulphate HG is the first water-soluble Potassium Sulfate fertilizer produced through an environmentally friendly circular process with a minimal carbon footprint in Sweden. It is produced by our trusted industrial partner, CINIS Fertilizer. GreenSwitch® SOP is a highly pure Potassium fertilizer, which dissolves rapidly and completely. Like conventional water-soluble SOP, GreenSwitch® SOP can be used in any fertilization program for high-tech greenhouse and open field fertigation as well as for foliar application. Our product is not sensitive to caking and is recommended during fruit or tuber development, up until maturation, and during the coloring of fruits. The high Potassium level in our formula plays an essential role in achieving higher-quality yields.
Growers using GreenSwitch® products reduce their Carbon Footprint and bring waste back to life. With GreenSwitch® Potassium Sulphate, growers make the switch to sustainable high-tech agriculture. GreenSwitch® Potassium Sulphate, another step in our Green Switch Journey!
- The first circular Potassium Sulphate fertilizer
- Patented, significantly reduced carbon footprint production process
- Minimum 51% K₂O potassium oxide formula
- Improves fruit quality, shelf life and increases plant drought resistance
- Limits vegetative growth as of fruit setting
- Developed for fertigation in open field and greenhouses. Also suitable for foliar application
Certifications
- Low on heavy metals
- Low on Sodium and Chloride
- Easy to handle, dissolve and apply
Hydroponics
| Kg in 1.000 l stock solution | K2O in kg | SO3 in kg1 |
|---|---|---|
| 25 | 12.7 | 11.2 |
| 50 | 25.5 | 22.5 |
| 75 | 38.2 | 33.7 |
| 100 | 51 | 45 |
Fertigation
| Crop | Application date | Min kg/ha/season | Max kg/ha/season |
|---|---|---|---|
Fruit trees |
• As of fruit setting • Until 4 weeks before harvesting |
150 | 350 |
Banana |
• As of plant establishment • During entire fertigation program |
300 | 500 |
Citrus (adult) |
• As of fruit setting • Until 4 weeks before harvesting |
200 | 400 |
Potato |
• As of tuber setting • Until tuber filling |
100 | 200 |
Vineyards (adult) |
• As of flower bud opening • Until 4 weeks before harvesting |
100 | 250 |
Pistachio |
• As of vegetative growth • Until fruit filling |
170 | 300 |
Fruit vegetables |
• As of vegetative growth • Until 4 weeks before harvesting |
100 | 300 |
Asparagus |
• During entire fertigation program | 200 | 300 |
Foliar Application
| Crop | Application date | Min kg / ha / appl | Max kg / ha / appl | Conc. % (w/v)) |
|---|---|---|---|---|
| Fruit trees |
3 - 5 applications: • As of fruit setting • 14 - 21 days interval |
7 | 10 | 1.0 - 2.0 |
| Citrus |
3 - 5 applications: • As of fruit setting • 14 - 21 days interval |
9 | 12 | 2.0 - 3.0 |
Olive |
3 - 5 applications: • As of fruit setting • 14 - 21 days interval |
9 | 12 | 2.0 - 3.0 |
| Potato |
3 applications: • As of 3 weeks after planting • 10 - 14 days interval |
4 | 6 | 1.0 - 3.0 |
Leafy crops |
3 applications: • As of 4 weeks after planting • Until vegetative growth • 10 - 14 days interval |
5 | 8 | 0.5 - 1.0 |
Sugarbeet |
2 - 3 applications: • As of second half of the season • 7 - 10 days interval |
5 | 8 | 2.0 - 3.0 |
Table grape |
3 - 5 applications: • As of fruit setting • 14 - 21 days interval |
7 | 10 | 1.5 - 2.0 |
| Fruit vegetables |
1 - 3 applications: • During vegetative growth • As of fruit setting • 10 - 14 days interval |
5 | 8 | 0.5 - 1.0 |
Carrots |
3 applications: • As of 4 weeks after seeding • 10 - 14 days interval |
3 | 5 | 1.5 - 2.5 |
Onion |
3 applications: • As of 4 weeks after seeding • 10 - 14 days interval |
5 | 8 | 2.0 - 3.0 |
Rapeseed |
1 - 2 applications: • As of vegetative growth • Until beginning of flowering |
3 | 6 | 1.0 - 1.5 |
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Compatible with other fertilizers, with the exception of Calcium fertilizers. Therefore a separate tank is needed or fertilizers should be applied on different times.
Fertilizing Knowledge
GreenSwitch® Potassium
GreenSwitch® Potassium is a fossil fuel-free production process, up-cycling residues from electric car batteries and the paper and pulp industry. The final product is GreenSwitch® Potassium Sulphate, a pure and fully water-soluble Potassium Sulphate with significantly reduced CO2 emissions suitable for foliar and fertigation applications. Produced in Sweden by our industrial partner CINIS Fertilizer, GreenSwitch® Potassium Sulphate is marketed by Van Iperen International.
