Libro 15-15-30 + TE Low pH Water-Soluble High-Potassium Fertilizer 25 kg

Libro 15-15-30 + TE is a fully water-soluble, high-potassium NPK fertilizer with a balanced formula of 15% nitrogen (N), 15% phosphorus (P₂O₅) and 30% potassium (K₂O), plus trace elements. It is designed to support plants during flowering, fruit set and fruit bulking: the high potassium level improves sugar transport within the plant and increases fruit fill and size, while also improving color, taste and overall crop quality.

Its low-pH (acidifying) formulation helps lower the alkalinity of the fertigation solution and improves nutrient availability, especially in alkaline water. It also helps reduce salt precipitation inside irrigation lines and improves system efficiency. The added micronutrients support vital plant processes and metabolic efficiency, while nitrogen and phosphorus keep growth balanced without stressing the plant, making it an ideal choice for modern fertigation programs that depend on controlling irrigation-solution quality.

Key Features

• High potassium content (30%) helps increase fruit size and improve quality.
• Low pH (acidifying effect) improves nutrient solubility and uptake efficiency.
• Helps reduce salt precipitation in irrigation lines and improves drip-system efficiency.
• Improves nutrient-use efficiency in alkaline, high-bicarbonate water.
• Helps improve fruit color, taste and quality when used within an integrated fertilization program.
• Suitable for systems suffering from clogged drippers or poor nutrient uptake.

Specifications

• Formula: NPK 15-15-30 + trace elements (TE)
• Total nitrogen (N): 15%
• Water-soluble phosphorus (P₂O₅): 15%
• Water-soluble potassium (K₂O): 30%
• Micronutrients: magnesium (MgO), iron (Fe), zinc (Zn), manganese (Mn), copper (Cu), boron (B), molybdenum (Mo)
• pH: low (acidifying effect)
• Fertilizer type: highly water-soluble compound fertilizer
• Form: 100% water-soluble
• Net weight: 25 kg

Directions for Use

• Foliar spray: 1–2 g per 1 liter of water (100–200 g per 100 liters of water).
• Spray until full wetting of the foliage.
• Repeat every 10–14 days depending on crop stage.
• Fertigation: 2–4 kg per hectare per irrigation.
• Adjust the rate according to the fruit-bulking and production stage.

Suitable Crops

• Vegetables (tomato, cucumber, pepper, eggplant): apply after fruit set and during fruit bulking to improve size and quality.
• Field crops (potato, corn, beet): apply during yield formation to increase production and improve quality.
• Fruit trees (date palm, citrus, grapes, other fruit trees): apply during fruit bulking to improve color, taste and fruit quality.
• Greenhouses: suitable during the fruiting stage, especially with modern irrigation systems.

Precautions

• Do not mix with calcium nitrate in the same tank to avoid precipitation.
• Avoid spraying during high temperatures or under direct sunlight.
• Do not exceed the recommended rates.
• Store in a cool, dry place away from moisture.

Orkida Tip

• Use this fertilizer during fruit bulking after fruit set for the best crop quality. Its effect is most noticeable in alkaline water or in systems with precipitation inside the lines. It is best used within an integrated fertilization program that controls the pH of the irrigation solution.