IG-SOP (K | S)
Potassium sulfate
IG-SOP is a potassium sulfate fertilizer that serves as an effective source of potassium. Growers can apply it if they aim to lower soil pH, require additional sulfur, or need to avoid nitrogen fertilization (for instance, during the final stages of the growing season). It is also recommended for drip irrigation and foliar applications on all crops, as well as for producing liquid fertilizers.
Packages:
Product Analysis
| K₂O water-soluble | 50.0% |
| Κ | 18.0% |
| SO₃ water-soluble | 45.0% |
| S | 18.0% |
| pH (10% concentration) | 3.4 |
Compatibility
IG-SOP is compatible with most water-soluble fertilizers, except for fertilizers containing calcium or magnesium. The combination of IG-SOP with the fertilizers, which contain calcium salts, creates insoluble gypsum precipitation. Avoid mixing it with calcium or magnesium fertilizers.
IG-SOP can be used as part of the nutrient formulation at the whole plant’s growth stage, with increased use recommended mainly during fruit setting and ripening.
Recommended dosages and application stages
IG-SOP can be used as part of the nutrient formulation at the whole plant’s growth stage, with increased use recommended mainly during fruit setting and ripening.
Fertigation
It is recommended to use IG-SOP as a source of potassium and sulfur, with nitrogen levels kept at a low level.
Quantitative fertigation
Each kilogram of IG-SOP in the tank provides 500 grams of K₂O (equivalent to 420 grams of K) and 450 grams of SO₃ (equivalent to 180 grams of K).
Drip Irrigation
The dosage is 15–25 kg/ton/hectare of water, applied through the drip irrigation system.
Application: Soil
| Crop | Dosage (kg/ha/season) | Application stage |
| Vegetables Crops | 2-6 | Until Flowering |
| 2-6 | Until fruit setting | |
| 2-6 | Until full harvesting | |
| Potatoes | 3-4 | From 40 to 50 days |
| 5-6 | From 50 to 80 days | |
| Fruit Crops | 150-350 | At flowering and during fruit development |
| Banana | 200-600 | During growth |
| 300-500 | From fruit setting till harvesting |
Foliar Nutrition
Foliar application of IG-SOP is an optional supplement to soil fertilization at growth stages when high levels of potassium and sulfur are required. The use of SOP fertilizer in the pre- and post-flowering seasons helps improve production quality. Foliar dosages of 2-5 kg/ton of water.
Foliar application: For all crops, dosages range from 4 to 15 g/L after fruit setting.
| Crop | Dosage (kg/ton/ha/application) | Application stage |
| Vegetables Crops | 2-7 | 3 applications:
• As of 4 weeks after planting • Until vegetative growth • 10 – 14 days interval |
| Potatoes | 3-7
|
3 applications:
• As of 3 weeks after planting • 10 – 14 days interval |
| Fruit Crops | 3-7 | 3 – 5 applications:
• As of fruit setting • 14 – 21 days interval |
| Olive | 5-15 | 3 – 5 applications:
• As of fruit setting • 14 – 21 days interval |