90-Day Controlled-Release Fertilizer

90-Day Controlled-Release Fertilizer: Our Product Information

  • ✅ Precision Nutrient Release Technology

    This 90-day controlled-release fertilizer uses advanced polymer coating technology to deliver nutrients gradually over an extended period. The controlled-release mechanism aligns nutrient supply with crop uptake, improving nutrient use efficiency while reducing leaching, volatilization, and application frequency.


  • ✅ Two Formulations for Targeted Nutrition

    Nitrogen Controlled-Release Fertilizer
    Polymer-coated nitrogen provides a steady nutrient supply, minimizing nitrogen loss and supporting strong vegetative growth in high nitrogen-demand crops.

    NPK Controlled-Release Fertilizer
    Balanced release of N–P₂O₅–K₂O ensures consistent nutrition throughout the crop cycle, promoting uniform growth, root development, and yield stability.

Product Overview

Full NPK Controlled‑Release Fertilizer is engineered to deliver custom N–P₂O₅–K₂O ratios with sustained release over ~90 days. Coating materials respond to soil moisture and temperature, enabling continuous nutrient availability that aligns with plant demand.

Only N Controlled‑Release Fertilizer is designed to regulate nitrogen availability over the same period, enhancing nitrogen use efficiency and reducing environmental loss for crops with intensive nitrogen requirements.

Together, these controlled‑release fertilizers promote stable soil fertility, reduce environmental impact, and improve yield quality with fewer inputs and lower labor costs.

Scientific Benefits of 90-Day Controlled-Release Fertilizer

1. Predictable & Sustained Nutrient Release
Advanced polymer coating ensures nutrients are released gradually over ~90 days, aligning with crop nutrient requirements to avoid nutrient surges or deficiencies and improve utilization efficiency.

2. Reduced Nutrient Loss & Enhanced Retention
Controlled‑release technology minimizes nutrient leaching and volatilization, protecting soil and groundwater while maximizing nutrient retention within the root zone.

3. Improved Crop Growth & Yield
Continuous nutrient supply supports strong root development, balanced vegetative and reproductive growth, enhanced stress tolerance, and higher yields with improved product quality.

4. Fewer Fertilizer Applications
Longer release duration reduces the number of fertilizer applications and field operations, saving labor and lowering overall production costs.

Product Specifications

Formulation TypeTypical Grades (N–P–K)Primary Application
Balanced (1:1:1)10-10-10, 15-15-15, 20-20-20General crops, vegetables, ornamentals, nurseries
High-N / Early Growth30-10-10, 32-8-16Starter fertilizer, early vegetative phase
High-P / Rooting & Establishment10-20-10, 13-40-13, 12-24-12Seedlings, transplanting, root crops
High-K / Flowering & Fruiting10-10-20, 15-5-20, 12-6-36Fruit trees, flowering crops, potassium-sensitive plants
Turf & Landscape (3:1:2)24-8-16, 21-7-14Turfgrass, sports fields, golf courses, lawns

Product Features and Advantages

Key Features

  • Extended 90‑Day Controlled Release – Ensures steady nutrient supply over a longer crop period.
  • Balanced Nutrition (Full NPK) – N, P, and K released according to plant demand.
  • Targeted Nitrogen Delivery (Only N) – Precision nitrogen release for high‑nitrogen crops.
  • High Nutrient Use Efficiency – Reduces nutrient loss and improves soil nutrient retention.
  • Broad Crop Compatibility – Suitable for field crops, vegetables, fruit trees, ornamentals, and nurseries.

Advantages

📈 Enhances nutrient efficiency and crop yield
🌱 Promotes robust root and shoot development
🔧 Reduces application frequency and labor requirements
🧪 Uniform granule size ensures even nutrient distribution
🌍 Supports sustainable, precision, and environmentally responsible farming

Application & Usage

Recommended Crops

Full NPK Controlled‑Release:
  • Field Crops: Corn, wheat, barley, soybeans
  • Vegetables: Tomatoes, cucumbers, peppers
  • Fruit Trees & Orchard Crops
  • Ornamentals & Nursery Plants
Only N Controlled‑Release:
  • High‑nitrogen demanding crops: Leafy greens, tobacco, spinach, sugarcane
  • Early vegetative stages of cereals, grasses, and forage crops

Application Guidelines

📌 Pre‑Plant Broadcast: Apply fertilizer evenly prior to planting for uniform nutrient distribution.
📌 Root Zone Placement: Place fertilizer near root zones to enhance nutrient uptake.
📌 Soil Incorporation: Mix into the topsoil to activate controlled release effectively.
📌 Precision Adjustment: Adjust rates based on soil test results and specific crop nutrient demands.

📦 Packaging & Storage

Packaging

  • Standard Bags: 25kg / 50kg
  • Jumbo Bags: 500kg / 1000kg
  • OEM / Private Label: Custom branding, bag size, and NPK ratio
NPK Packaging

Storage

  • Store in a cool, dry, ventilated area
  • Protect from moisture, direct sunlight, and rain
  • Seal opened bags to prevent caking
  • Store on pallets, away from incompatible chemicals

Frequently Asked Questions

A1: A fertilizer using advanced coating technology to gradually release nutrients over approximately 90 days, improving nutrient synchronization with crop uptake and enhancing nutrient use efficiency.

A2: Nutrients are encapsulated with a polymer coating that slows diffusion, releasing nutrients steadily in response to soil moisture and temperature.

A3: Full NPK Controlled‑Release releases nitrogen, phosphorus, and potassium over 90 days, while Only N Controlled‑Release focuses solely on precision nitrogen delivery.

A4: Higher nutrient efficiency, reduced application frequency, stronger crop performance, and improved environmental outcomes.

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    Need a custom formula?

    Contact our technical sales team for soil-specific recommendations and bulk pricing.

    Why Choose Risso® 90-Day Controlled-Release Fertilizer?

    Risso® 90‑Day Controlled‑Release Fertilizer delivers steady nutrients for three months, improving nutrient use efficiency, crop growth, and yield consistency.

    Key Benefits:
    • 🌱 Consistent nutrient supply for healthy roots and shoots
    • 📈 Reduces nutrient loss, enhancing fertilizer efficiency
    • 🔧 Fewer applications, saving labor and cost
    • 🌍 Supports sustainable and precision farming

    Designed for high-performance, long-lasting nutrition, Risso® helps modern farmers achieve higher yields with lower environmental impact.