Skip to content
KisanPe
Fertilizers & Crop Nutrition

20-20-20 Fertilizer: Balanced NPK Foliar Nutrition

20-20-20 (or 20:20:20 with 13% sulfur) is a balanced water-soluble fertilizer containing equal proportions of total nitrogen, available phosphate, and soluble potash. It is widely applied via drip fertigation and foliar spraying to maintain vegetative growth, root expansion, and fruit formation across commercial crops.

Last reviewed: 11 November 2026

Nutrient Profile and Chemical Composition

A 1:1:1 balanced NPK ratio provides plants with all three primary macronutrients in equal measure, preventing vegetative-reproductive nutritional imbalances.

Manufactured from technical-grade raw materials, 20-20-20 dissolves completely without leaving insoluble sediment in drip lines or spray nozzles.

  • Total Nitrogen (20%): Delivered as ammoniacal, nitrate, and urea nitrogen for sustained and immediate vegetative growth
  • Available Phosphorus (20% P2O5): Water-soluble phosphate promoting root architecture, tillering, and flowering
  • Soluble Potassium (20% K2O): Enhances carbohydrate transport, enzyme activation, and drought tolerance
  • Sulfur Addition (in 20:20:0:13 or custom grades): Boosts amino acid synthesis and oil content in oilseeds

Crops and Growth Stages for 20-20-20 Application

Balanced 20-20-20 is ideal during the mid-vegetative and early flowering phases when crops require continuous nutrient replenishment.

It serves as a primary fertigation formula in greenhouse horticulture, open-field vegetables, fruit orchards, and sugarcane.

  • Vegetables (Tomato, Chilli, Brinjal): Foliar spray during active branching and flowering flushes
  • Fruit Orchards (Pomegranate, Citrus, Grapes): Applied through drip systems during new shoot emergence
  • Sugarcane and Cotton: Drip fertigation during rapid canopy establishment and node elongation

Fertigation and Foliar Spray Guidelines

For foliar sprays, standard dilution ranges from 4 to 5 grams per liter of water (approx. 800 g to 1 kg per acre in 200 liters).

For drip irrigation, calibrate injection according to weekly crop uptake schedules, ensuring drip filters are flushed after dosing.

  • Water Solubility: 100% water-soluble; dissolve completely in a primary bucket before tank injection
  • Spraying Time: Spray during early mornings or evenings to maximize foliar stomatal absorption
  • Compatibility: Can be combined with most chelated micronutrients; avoid mixing directly with concentrated calcium nitrate

Official source

Check the latest rules, benefits and forms here. KisanPe is an independent platform and is not a government website.

Ministry of Agriculture - Fertilizer Control Order ↗

Related on KisanPe

Common questions

What does 20-20-20 indicate on a fertilizer grade?

It indicates the fertilizer contains 20% total nitrogen (N), 20% available phosphorus (P2O5), and 20% soluble potassium (K2O) by weight.

Can 20-20-20 fertilizer be applied through drip systems?

Yes, water-soluble 20-20-20 is specially formulated for micro-irrigation systems and will not clog drip emitters.

Is 20-20-20 suitable for flowering crops?

Yes, it provides balanced phosphorus for blossom development alongside nitrogen and potassium for ongoing canopy support.

General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.

More Fertilizers & Crop Nutrition guides

Ask Sakhi AI in your language, check live mandi prices or plan a loan with KisanPe tools.

Ask Sakhi
Download KisanPe App