ICL Professional Water-Soluble Fertilizers & Additives

ICL Professional Water-Soluble Fertilizers & Additives form a comprehensive program of primary nutrients, secondary elements, and specialized additives designed for high-precision fertigation and hydroponic systems. These products, characterized by high purity, rapid solubility, and predictable chemical properties, allow growers to formulate precise nutrient solutions and address specific crop needs from propagation to harvest.

Primary Macronutrient Fertilizers
This category provides the essential building blocks for plant development—nitrogen, phosphorus, and potassium—in highly soluble, instantly plant-available forms. They are formulated to meet specific crop stage requirements and allow for precise nutritional control.

ICL Nova MAP Mono Ammonium Phosphate 12-61-0 is an ideal starter fertilizer, especially effective in the initial growth phase before and after seeding or planting. It provides a high concentration of phosphorus, promoting rapid nutrient uptake and optimal root system development. The product acidifies the root zone, increasing the availability of phosphorus and micronutrients in calcareous soils. It is a pure, crystalline powder free of chloride and sodium, leaving no residue and dissolving quickly for use in all fertigation systems. Important Compatibility Note: It must not be mixed with calcium-containing fertilizers. Mixtures with magnesium-based products require a small-scale compatibility test first, as success depends on water quality and pH. A standard stock solution is prepared at 8–10 kg per 100 liters of water.

ICL Nova N-K Potassium Nitrate 13.5-0-46 is a premium source of nitrogen and potassium for plants requiring high potassium levels, especially from fruit set through harvest. The nitrogen is supplied in the readily absorbed nitrate form. It is compatible with soft or hard water and can be safely mixed with calcium-based fertilizers, making it highly versatile in hydroponic systems. Due to its lack of ammonium, it is an excellent choice for substrate-grown crops during periods of high temperature. A standard stock solution is prepared at 8–10 kg per 100 liters of water.

ICL Nova PeaK Monopotassium Phosphate 0-52-34 delivers high concentrations of phosphorus and potassium without nitrogen. This formulation allows growers precise control over nitrogen application during critical stages like flowering, fruit set, and ripening. It has a very low salt index, is free of chlorine and sodium, and poses no risk of leaf burn or phytotoxicity in foliar or fertigation applications. The product acts as a pH buffer, stabilizing nutrient solutions, and has an inherent pH of approximately 5.0, which can enhance the efficacy of some pesticides when used in tank mixes. A standard stock solution is prepared at 10–15 kg per 100 liters of water.

Secondary Nutrients, Additives, and Micronutrients
This segment addresses specific nutrient needs, crop stresses, and application challenges beyond the primary macronutrients.

ICL Nova Magnific Water Soluble Magnesium Nitrate 11-0-0 (9.3% Mg) provides a soluble source of both magnesium and nitrate nitrogen. Magnesium is a central component of chlorophyll, and its availability is crucial for photosynthesis. This product is effective for correcting magnesium deficiencies and supplying a non-ammoniacal form of nitrogen. No specific compatibility or mixing information was found in the provided search results.

ICL Micromax Micronutrients is a granular, homogeneous blend of essential trace elements, including iron, zinc, manganese, copper, boron, and molybdenum. The homogeneous formulation ensures each granule contains all listed nutrients, preventing segregation and guaranteeing even distribution in the root zone. It boosts the uptake and utilization of primary macronutrients, supports vigorous root development, and improves plant tolerance to environmental stresses such as heat and drought. For best results, it should be thoroughly incorporated into the growing media and watered in before or soon after planting.

ICL H2Pro Wetting Agent is a surfactant designed for use in soilless growing media. It reduces dry spots and wilting by improving the penetration and even distribution of water throughout hydrophobic media. It can be incorporated during media blending or applied as a surface treatment during production or prior to shipping to reduce plant stress.

Specialty Acidic PK Fertilizers
These products provide phosphorus and potassium with an acidifying effect, suitable for specific water quality conditions or nutritional strategies.

ICL Nova PeKacid 0-60-20 Soluble Acidic PK is a high-phosphorus fertilizer with significant potassium content. Its acidic nature helps lower the pH of irrigation water and nutrient solutions, which can improve nutrient availability and prevent clogging in irrigation lines by dissolving mineral deposits.

ICL Nova MagPhos 0-55-18 Fertilizer supplies magnesium, phosphorus, and potassium in a single formulation. This combination is useful for addressing multiple nutrient needs simultaneously, particularly for crops with high magnesium demands during fruiting. The product also contributes to solution acidification. Important Compatibility Note: As noted with Nova MAP, mixtures of magnesium and phosphate fertilizers require caution and small-scale testing due to potential precipitation issues dependent on water chemistry.

Key Specifications for Major Products