NPK 19-19-19 Fertilizer
NPK 19-19-19 fertilizer is a versatile, fast-acting compound fertilizer containing 19% each of nitrogen, phosphorus, and potassium. Made from high-purity raw materials, it dissolves completely in water to form a clear, residue-free solution that can be rapidly absorbed by plants through irrigation or foliar spraying. Its balanced 1:1:1 nutrient ratio makes it particularly suitable for the critical transition stage between vegetative and reproductive growth, simultaneously promoting robust root, stem, and leaf development as well as flower and fruit formation, while enhancing stress resistance. As a commonly used top-dressing fertilizer in modern precision agriculture, it combines comprehensive nutrient supply, high application efficiency, and rapid absorption. Selection should weigh the pros and cons of different potassium sources (e.g., KCl, K₂SO₄, KNO₃, KH₂PO₄) against factors like crop type, growth stage, application method, soil conditions, and cost-effectiveness.
Product Advantages
High Nutrient Efficiency & Rapid Kinetics
All nutrients are in plant-available ionic forms. Ions reach root surfaces within minutes via mass flow/diffusion. Drip-applied nitrate-N achieves >50% absorption within 24 hours. With fertigation, seasonal N and K utilization reaches 60-75%, while P efficiency triples versus conventional fertilizers (foliar absorption >90%).
Precise Spariotemporal Delivery
As an optimal fertigation carrier, it enables timed, quantified, and localized nutrient supply. Maintaining root-zone EC at 1.5-2.0 mS/cm during fruit cell division ensures immediate balanced nutrition for synchronized growth.
Metabolic Balance Regulation
The 1:1:1 NPK ratio is critical for vegetative-reproductive balance. Applied during key windows (e.g., tomato continuous fruit-setting), it prevents N-excess elongation and K-deficiency blossom-end rot (incidence <5%), ensuring synchronized yield and quality development.
Product Application
Growth Window Management
Vegetative-Reproductive Transition Phase: Applied post-flowering in fruit trees until early fruit expansion, or after the first truss fruit set in tomatoes, to provide synchronized nutritional support for both shoot growth and flower/fruit development.
Quality Foundation Phase: Used approximately 20 days before grape veraison or during the mid-stage of citrus fruit expansion to promote sugar accumulation and peel structural compound synthesis through potassium-nitrogen synergy.
Standard in Cultivation Systems
Hydroponic Base Solution: Serves as a standard formulation component for Deep Flow Technique (DFT) and Nutrient Film Technique (NFT) systems.
Fertigation Top-Dressing: Recommended drip irrigation concentration of 0.15–0.25% (corresponding to an EC value of approximately 1.8–2.5 mS/cm), applied every 7–10 days or dynamically adjusted based on crop transpiration rates.
Stress Physiology Management Tool
Used for rapid canopy recovery after frost or chemical damage, with its balanced nutrient profile preventing secondary stress caused by excessive single-element supplementation.
Our Certificate
● "MONBAND" was recognized as a national wellknown trademark
● Hebei Agricultural Bio Silicon&Carbon Special Fertilizer Technology Innovation Center
● Obtained carbon emission verification certificate on January25,2024
● MONBAND organic products have been approved by ECOCERT for organic inputs in USA& EU
● "MONBAND" has been registered as a trademark in 52 countries
● Five products have been certified by EU REACH
● Member of International Fertilizer Industry Association (lFA)
FAQ
Q: If stock or working solutions are prepared in advance, what is the maximum storage duration before precipitation or efficacy loss occurs?
A: Solution Storage: Prepared stock solutions should ideally be used immediately. If storage is necessary, they should be kept in sealed, opaque containers away from direct sunlight and high temperatures. Generally, it is recommended to use the solution within 24–48 hours to prevent precipitation and microbial growth.
Q: How to control the concentration of NPK 19-19-19 fertilizer?
A: To control the concentration of NPK 19-19-19 water-soluble fertilizer, prioritize using an EC meter to monitor nutrient strength in real-time. For foliar spraying, apply at 0.1%–0.15% concentration (1–1.5 g/L) or dilute to 0.08%–0.1% in high temperatures to avoid leaf burn. For drip irrigation, adjust based on crop stage-seedlings require EC 1.0–1.8 mS/cm, while fruiting crops like tomatoes need EC 1.8–2.5 mS/cm (roughly 1.7–1.9 g/L). Always use the "secondary dilution" method, subtract your water's baseline EC, and follow the "little and often" principle to prevent salt accumulation and ensure efficient uptake
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