| CONTENT | Potassium Nitrate | Potassium Sulfate | Calcium Nitrate | Calmag | Magnesium Sulfate | Magnesium Nitrate | MKP | MAP | Urea Phosphate | Foliar Urea | Calcium Chloride | Potassium Chloride WS 0-0-60+48 Cl | NK 16-0-40 |
| Total Nitrogen (N) | 13.5% | - | 15.5% | - | - | - | - | 12% | 17% | - | - | - | 16% |
| Nitrate Nitrogen (NO3-N) | 13.5% | - | 14.4% | 13% | - | 10% | - | - | - | - | - | - | 13.8% |
| Ammonium Nitrogen (NH4-N) | - | - | 1.1% | - | - | - | - | 12% | - | - | - | - | 2.2% |
| Urea Nitrogen (NH2-N) | - | - | - | - | - | - | - | - | 17% | 46% | - | - | - |
| Phosphorus Pentoxide (P₂O₅) (Water-soluble) | - | - | - | - | - | - | 51.5% | 61% | 44% | - | - | - | - |
| Potassium Oxide (K₂O) (Water-soluble) | 45.5% | 51% | - | - | - | - | 34% | - | - | - | - | 61% | 40% |
| Magnesium Oxide (MgO) (Water-soluble) | - | - | - | 6% | 16% | 15% | - | - | - | - | - | - | - |
| Calcium Oxide (CaO) (Water-soluble) | - | - | 26.3% | - | - | - | - | - | - | - | 38% | - | - |
| Sulfur Trioxide (SO₃) (Water-soluble) | - | - | - | - | 33% | - | - | - | - | - | - | - | - |
Precision Nutrition for High-Performance Growing
Doktor Tarsa's Hydroponica Series offers a complete range of high-purity, water-soluble fertilizers developed specifically for fertigation and modern agricultural practices. Each formulation is designed to maximize plant nutrition efficiency, crop quality, and yield — while maintaining compatibility with advanced irrigation systems and soil structures.
High-purity potassium nitrate with 100% solubility
Free from chlorine, sodium, and heavy metals
Rapid dissolution with anti-caking properties
Supports sugar accumulation, flavor, firmness, and shelf life
Enhances cation uptake (Ca²⁺, Mg²⁺) and overall plant vigor
Recommended dose: 2–5 kg/da via drip irrigation
Concentrated potassium and sulfur source
Promotes fruit firmness and color during ripening
Fully water-soluble; ideal for fertigation
Foliar application not recommended
Premium-grade calcium and nitrate nitrogen
Improves fruit firmness, shelf life, and plant resilience
Enhances uptake of K⁺, Ca²⁺, Mg²⁺
Not compatible with phosphates or sulfates
Ideal for use during vegetative growth (3–5 kg/da)
Combined calcium and magnesium for better uptake
Strengthens fruit tissue and supports photosynthesis
Not compatible with other fertilizers
Supports chlorophyll formation and photosynthetic activity
High magnesium content keeps leaves green and healthy
Sulfur aids in enzyme and vitamin formation
Ideal for fruit color and ripening support
Fast-acting magnesium source for alkaline soils
Nitrate form improves absorption and compensates deficiencies
Low EC value allows high-dose foliar use
Compatible with calcium nitrate
Pure phosphorus and potassium for flowering & fruiting
No nitrogen or ammonium – ideal for hydroponics
Enhances root growth, color, Brix, and uniform ripening
Drip dose: 2–4 kg/da | Foliar: 1–2% solution
Not compatible with calcium or concentrated Mg fertilizers
Phosphorus-rich fertilizer for early stages and flowering
Drip irrigation: 500–1000 g/da/day
Foliar: 0.5–1 kg per 100 liters of water
High-phosphorus acidic fertilizer ideal for flowering & root growth
Improves phosphorus uptake in high-pH soils
Helps acidify root zone, enhancing nutrient availability
Can be used to adjust solution pH
Low-biuret urea (<0.25%) for safe foliar nitrogen feeding
Ideal for high-demand nitrogen periods
Supports rapid green growth without burn risk
Compatible with all crops during active growth
High calcium fertilizer for soilless cultivation
Chloride-based; not recommended for open-field soil applications
Used in hydroponics when nitrogen-free calcium is needed
Fully soluble high-potassium fertilizer
Enhances fruit flavor, Brix, firmness, and shelf life
Suitable only for chlorine-tolerant crops and specific hydroponic systems
Avoid use in salt-sensitive crops or soils
High potassium and nitrogen combination
Improves fruit filling, sugar content, and overall yield
Supports potassium uptake and strengthens plant tissues
👉 All Hydroponica products are manufactured under Doktor Tarsa's quality control systems, compliant with EU Fertilizer Regulations, and certified with TS EN ISO 9001:2000.
Need product guidance or dosage recommendations?
Contact your regional Doktor Tarsa representative or our technical support team for professional advice tailored to your crops and growing conditions.
The following recommended application rates are intended as general guidelines. Actual dosages should be determined by qualified agricultural professionals based on soil and leaf analysis results, plant development stages, and environmental conditions.
Do not exceed the recommended rates. For more information, please contact the DRT Group Technical Department.
Foliar Application: 0.5–1 kg per 100 liters of water
Soil Application: 300–600 g/da/day
These products may be applied via foliar spray, fertigation, or directly to the soil. To determine the best concentration and application method, conduct soil and leaf analysis.
Greenhouse Crops (Soil Application): 500–1000 g/da/day
Foliar Application: 0.5–1 kg per 100 liters of water
Field Application: 15–30 kg/da (adjusted based on EC levels and plant needs)
A fully water-soluble solid fertilizer applied to the soil to meet nitrogen and potassium requirements in orchards and greenhouses. Especially beneficial during fruit ripening and in stages of high potassium demand.
Soil Application: 1–2 kg/da/day
Orchard Crops: 0.2–0.7 kg per tree
Applied both foliar and via soil irrigation during early and advanced growth stages. Soil and leaf analysis is recommended to define optimal use.
Foliar Application: 0.5–2 kg per 100 liters of water
Soil Application via Irrigation: 3–5 kg/da, typically in 3–4 separate applications
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