Keymag

Keymag Series

Premium Water-Soluble Fertilizers Under Doktor Tarsa Quality Assurance

The Keymag series is developed to meet the nutritional needs of a wide range of crops, ensuring healthy plant growth, improved yield, and enhanced product quality. Backed by Doktor Tarsa's quality assurance and fully compliant with European Union Fertilizer Regulations, Keymag fertilizers are 100% water-soluble, suitable for soil applications as well as fertigation via drip or sprinkler irrigation systems.

Keymag Ruby

NK Fertilizer | 10–00–40 + 2MgO
Packaging: 25 kg

Keymag Ruby is a specialized potassium- and magnesium-based fertilizer designed to support plant health and productivity from the fruit set stage up to harvest. The formulation provides a strong dose of potassium (K), essential for fruit quality, along with magnesium (MgO), which plays a vital role in photosynthesis and enzyme activation.

 Key Benefits:

• High potassium content improves fruit filling, firmness, color, and shelf life

• Magnesium promotes efficient photosynthesis and supports enzyme activity

• Enhances sugar accumulation and improves fruit taste and size

• Supports plants during the most demanding growth periods such as fruit development and maturation

• Can be safely used in sensitive crops due to its chloride-free formulation

Recommended Use:
Keymag Ruby is ideal for use during the post-fruit set period until harvest, when potassium demand is at its peak. Suitable for fruiting vegetables, orchards, vineyards, and any crop requiring quality-focused nutrition.

Keymag Safir

NP Fertilizer | 27–5–0
Packaging: 25 kg

Keymag Safir is a high-nitrogen NP fertilizer enriched with phosphorus, formulated to promote vigorous vegetative growth and energy support for all types of crops.
The product contains nitrate nitrogen, which is quickly absorbed by plants, ensuring a rapid and effective response even under stress conditions.

 Key Benefits:

• Provides a high level of readily available nitrogen, essential for shoot, leaf, and root development

• Supports green foliage and increases chlorophyll formation

• Phosphorus content energizes the plant and promotes cell division, flowering, and root strength

• Accelerates early growth and ensures a strong plant foundation

• Highly soluble and compatible with most fertigation systems

Why Nitrogen & Phosphorus Matter:

Nitrogen is a fundamental element for vegetative development. It supports stem elongation, leaf expansion, and biomass accumulation. Deficiency causes stunted growth, pale yellow leaves (chlorosis), and poor yield.

Phosphorus is essential for energy transfer (ATP), genetic functions (DNA/RNA), and reproductive processes such as flowering and seed formation. Phosphorus deficiency primarily affects the plant’s generative potential and overall energy levels.

• Application & Compatibility

  Both Keymag Ruby and Keymag Safir are:

  • 100% water-soluble, leaving no residue in irrigation systems

  • Suitable for application via drip irrigation, sprinkler systems, or direct soil application

  • Compatible with a wide range of agricultural programs and other water-soluble fertilizers

  • Designed to meet the nutritional demands of intensive farming practices

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  Doktor Tarsa’s Keymag series delivers targeted, efficient nutrition tailored to the physiological needs of your crops. Whether your goal is vegetative growth, fruit quality, or overall plant resilience, Keymag provides the trusted support you need—backed by international quality standards.