-
28% SO₃
– sulfur plays a key role in nitrogen metabolism and the process of protein synthesis in plants, supporting their proper growth and development.
-
40% CaO
– nutritional calcium is an essential structural component of cell walls, improves soil structure, and helps neutralize its acidity.
-
6% MgO
– magnesium plays a key role in the process of photosynthesis, participating in the formation of chlorophyll, and also improves the efficiency of uptake of other nutrients, including phosphorus and nitrogen.
-
Moisture – below 0.3%
– ensures high fertilizer stability, prevents caking, and facilitates uniform spreading.
-
Fertilizer reaction above pH 7.5
– guarantees fertilizer stability, reduces soil acidification, and improves nutrient availability.
With regular use, SIARCOMPLEX +Mg contributes to improved soil health, thereby helping to limit pathogenic fungi.
-
Granulation – 0–5 mm (including 0–2 mm above 80%)
– guarantees uniform spreading and optimal distribution of the fertilizer in the soil.
Benefits of Use
- Supply of essential nutrients: Siarcomplex +Mg provides plants with vital nutrients – sulfur, calcium, and magnesium – that support growth, development, and metabolic processes, improving vitality and yields.
- Improved soil structure: The product increases the soil’s ability to retain water and improves its aeration, which promotes root system development and better nutrient uptake.
- Better nitrogen utilization: Siarcomplex +Mg supports nitrogen uptake and processing, increasing fertilization efficiency and improving plant growth while enabling more economical use of fertilizers.
- Enhanced plant resistance: Strengthens plants’ natural resistance to diseases, drought, and low temperatures, increasing their resilience to various environmental stresses.
- Higher yields and improved quality: The product supports higher yields of better quality – increased oil content in rapeseed, improved sugar quality in beets, and higher starch content in potatoes.
- No soil acidification: Unlike traditional sulfur fertilizers, Siarcomplex +Mg does not acidify the soil, allowing safe, long-term use.
- Neutralization of aluminum toxicity: The product effectively neutralizes the toxic effects of aluminum in acidic soils, encouraging better root system development.
- Stabilization of soil air–water conditions: Siarcomplex +Mg supports optimal air–water conditions in soil, improving nutrient and water uptake by plants.
Instructions for Use
- Field crops – apply in autumn on stubble or in spring before sowing. Can also be used as top-dressing.
- Orchards and vegetable crops – dosage should be adjusted to the specific crop. Application is recommended pre-sowing, in early spring, between rows, or after harvest.
- Grasslands – apply in early spring or autumn; may also be used between harvests.
Precautions
- When used as intended, the fertilizer poses no risk.
- For prolonged contact, eye and respiratory protection is recommended.
- In case of eye contact, rinse thoroughly with plenty of water.
- WARNING: DO NOT MIX WITH PHOSPHORUS FERTILIZERS
Dosage
Dosage is determined based on soil analysis depending on soil type, crop type, soil pH, and sulfur content in the soil.| Crop | Fertilizer Dose (kg/ha) | Application Period |
|---|---|---|
| Grasslands | 300-400 | All year round |
| Winter rapeseed | 450-500 | Autumn/Spring |
| Spring rapeseed | 400-450 | Autumn/Spring |
| Mustard | 400-450 | Autumn/Spring |
| Maize | 300-400 | Autumn/Spring |
| Sugar beet | 350-400 | Autumn/Spring |
| Potato | 200-300 | Autumn/Spring |
| Cereals | 200-225 | Autumn/Spring |
| Legumes | 200-220 | Autumn/Spring |
Dosage is determined based on soil analysis depending on soil type, crop type, soil pH, and sulfur content in the soil.
Key Advantages
Regulates Soil pH
Calcium sulfate helps maintain optimal soil pH, neutralizing toxic aluminum and reducing soil acidity.Improves Soil Structure
Calcium supports the formation of a crumb structure, which enhances soil air and water properties, increasing water retention.Activates Soil Microorganisms
Improves soil biological activity, supporting the decomposition of organic matter and the availability of nutrients.Prevents Sulfur and Magnesium Deficiencies
On soils poor in these elements, the use of SIARCOMPLEX +Mg eliminates symptoms such as inhibited plant growth, leaf chlorosis, or reduced disease resistance.Reduces the Risk of Nutrient Leaching
The proper proportions of sulfur, calcium, and magnesium help retain nutrients in the plant root zone, reducing their loss.







