28-0-3 Fertilizer: When And How To Fertilize

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SearchNPK CalculatorSearch by Crop TypeLoading...OREnter NPK Formula (e.g., 10-20-20)Find Fertilizer Recommendations

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  • Select a crop from the dropdown or enter an NPK formula
  • NPK format should be three numbers separated by hyphens (e.g., 10-20-20)
  • If no exact match is found, you'll see similar suggestions
  • Results will include required nutrients and recommended fertilizers

All NPK Formulas

Browse all available fertilizer formulas and their applications

Browse All NPK Formulas

All Crops

Browse all available crops and their nutrient requirements

Browse All Crops

What is NPK?

NPK stands for Nitrogen (N), Phosphorus (P), and Potassium (K) - the three main nutrients plants need to grow healthy and strong.

Nitrogen (N)

Essential for leaf growth and forms proteins and chlorophyll

Phosphorus (P)

Important for root development, flowering, and fruiting

Potassium (K)

Regulates water movement and improves disease resistance

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