Skip to content

NPK 15-5-20 90-Day Controlled-Release Fertilizer

Balanced, Long-Lasting Nutrition for Vegetables, Fruits, Field Crops, and Sustainable Agriculture

NPK 15-5-20 90-Day Controlled-Release Fertilizer​

Nitrogen (N) 15% – promotes vigorous vegetative growth and robust foliage.
Phosphorus Pentoxide (P₂O₅) 5% – supports early root establishment and flowering.
Potassium Oxide (K₂O) 20% – enhances stress tolerance, water regulation, and fruit quality.
90‑Day Controlled Release: Advanced polymer or sulfur-coated granules provide steady nutrient delivery over ~90 days, matching crop uptake and reducing the need for repeated applications.

NPK 15-5-20 90Day CR Fertilizer Detailed Specifications

Terafon® NPK 15‑5‑20 90‑Day Controlled-Release Fertilizer is a high-quality, polymer-coated NPK formulation designed for season-long crop nutrition. Its 15‑5‑20 nutrient ratio supports vigorous vegetative growth, strong root development, and improved fruiting performance. The controlled-release technology ensures synchronized nutrient availability, improving fertilizer efficiency and supporting sustainable agriculture practices.

Technical Specifications

ParameterTypical Value
N–P₂O₅–K₂O Composition15–5–20
Controlled-Release Duration~90 days (temperature & moisture dependent)
Coating SystemAdvanced polymer/sulfur-based controlled release
Granule Size2–4 mm, free-flowing
Moisture Content≤ 2.5%
Optional NutrientsS, Mg, Fe, Mn, Zn, Cu, B, Mo

Key Features & Agronomic Benefits

1. Balanced Whole-Cycle Nutrition

  • The 15‑5‑20 NPK ratio provides ample nitrogen for vegetative growth, phosphorus for root development, and high potassium to enhance fruiting, stress tolerance, and overall crop quality.

2. Long-Lasting Controlled Release

  • Polymer or sulfur-coated granules release nutrients steadily over ~90 days, reducing nutrient peaks and deficiencies while lowering labor and re-application frequency.

3. Improved Fertilizer Efficiency

  • Stable nutrient diffusion improves uptake efficiency, minimizes leaching and volatilization, and promotes environmentally sustainable fertilization practices.

4. Broad Crop Compatibility

  • Ideal for vegetables, fruits, field crops, orchards, ornamentals, and turfgrass, ensuring consistent growth and quality across multiple cultivation systems.

Application & Usage Guidelines

Application Methods

  • Pre-Plant Broadcast: Apply evenly before sowing or transplanting.
  • Band or Row Placement: Place near the root zone for optimal nutrient uptake.
  • Soil Incorporation: Suitable for nursery trays, raised beds, and containers.

Best Practices

  • Base fertilizer rates on soil tests and crop nutrient demand.
  • Apply prior to irrigation or rainfall to activate controlled-release nutrients.
  • Avoid mixing with incompatible chemicals during application.

Note: Additional fertilization is generally unnecessary during the 90-day release period.

  • Vegetables and leafy greens
  • Fruits and orchard crops
  • Field crops and cereals
  • Ornamentals and nursery plants
  • Lawns and turfgrass

Packaging & Storage

  • Packaging Options: 25 kg & 50 kg woven PP bags; 500–1,000 kg jumbo bags.
  • Storage Conditions: Cool, dry, ventilated warehouse; protect from moisture and direct sunlight.
  • Shelf Life: Anti-caking treated for long-term storage and handling stability.

Why Choose Terafon® NPK 15-5-20 90-Day CR Fertilizer?

  • Balanced, professional-grade NPK formulation for diverse crops
  • Reliable 90-day controlled nutrient release for season-long growth
  • Enhanced fertilizer efficiency and reduced environmental impact
  • Simplified crop nutrition management with fewer applications
  • Supports sustainable and high-yield agriculture

Terafon® NPK 15‑5‑20 90-Day Controlled-Release Fertilizer delivers precise, long-lasting nutrition to enhance crop vigor, yield, and quality across all growth stages.







    Similar products

    Automotive-Grade-UreaI-(SCR)

    Automotive-Grade-UreaI-(SCR)

    High-quality urea specifically designed for SCR (Selective Catalytic Reduction) systems in vehicles. It reduces harmful NOx emissions, improving engine performance and environmental...
    NPK-15-15-15

    NPK-15-15-15 Fertilizer

    A well-balanced fertilizer with equal ratios of nitrogen, phosphorus, and potassium. It promotes strong growth, robust roots, and improved crop yield for various plants.
    NPK-24-8-16

    Low organic matter NPK fertilizer

    Ideal for soils requiring controlled organic content, this low organic matter fertilizer delivers essential nutrients efficiently, supporting steady plant growth and high productivity.
    Humic-Acid-Salts

    Humic-Acid-Salts Fertilizer

    Contains humic acid salts that enhance nutrient absorption, improve soil quality, and boost plant resistance to stress, ensuring healthier growth and better yields.

    Why Choose Terafon for Your Fertilizer Needs

    90-Day Controlled Release for Long-Term Crop Nutrition

    Terafon 90-Day CR NPK 15‑5‑20 Fertilizer delivers balanced coated nutrients with a steady release pattern to support extended crop cycles efficiently.

    Uniform Granules & Consistent Nutrient Delivery

    Granules sized 2–4 mm ensure smooth handling and even field coverage, providing uniform nutrient supply for pre-planting, top-dressing, or fertigation.

    High Quality & Soil-Enhancing Performance

    Strict production control maintains low moisture, minimal impurities, excellent storage stability, reduced caking, and long-term soil fertility improvement.

    Proven Efficiency for Sustainable Agriculture

    Trusted by growers, this 90-day CR NPK 15‑5‑20 fertilizer supports high-efficiency nutrition and sustainable growth for vegetables, fruits, field crops, and orchards.

    Optimize Your Crop Nutrition with Terafon NPK 15‑5‑20

    Contact us today to discover how Terafon’s 90-Day Controlled-Release NPK 15‑5‑20 fertilizer can provide balanced nutrients, enhance crop growth, improve soil fertility, and support sustainable agriculture.