FertilizerCalc

Crop Fertilizer Database

Comprehensive fertilizer requirements for major crops with detailed growing information

Wheat

Cereals
120
N (kg/ha)
60
P (kg/ha)
40
K (kg/ha)
Growth Period: 120-150 days
Soil Type: Well-drained loamy soil
pH Range: 6.0-7.5

Application Tips:

  • Apply nitrogen in split doses
  • Phosphorus at sowing time
  • Potassium before tillering

Rice

Cereals
100
N (kg/ha)
50
P (kg/ha)
60
K (kg/ha)
Growth Period: 90-120 days
Soil Type: Clay or clay loam
pH Range: 5.5-6.5

Application Tips:

  • High nitrogen during tillering
  • Phosphorus at transplanting
  • Potassium at panicle stage

Corn/Maize

Cereals
150
N (kg/ha)
70
P (kg/ha)
80
K (kg/ha)
Growth Period: 90-120 days
Soil Type: Well-drained fertile soil
pH Range: 6.0-6.8

Application Tips:

  • Heavy nitrogen feeder
  • Side-dress at knee height
  • Potassium for stalk strength

Tomato

Vegetables
200
N (kg/ha)
100
P (kg/ha)
150
K (kg/ha)
Growth Period: 120-150 days
Soil Type: Well-drained sandy loam
pH Range: 6.0-6.8

Application Tips:

  • Balanced NPK throughout
  • Extra potassium for fruit quality
  • Avoid excessive nitrogen

Potato

Vegetables
180
N (kg/ha)
90
P (kg/ha)
120
K (kg/ha)
Growth Period: 90-120 days
Soil Type: Sandy loam, well-drained
pH Range: 5.5-6.0

Application Tips:

  • Phosphorus at planting
  • Nitrogen during vegetative growth
  • Potassium for tuber development

Onion

Vegetables
140
N (kg/ha)
80
P (kg/ha)
110
K (kg/ha)
Growth Period: 150-180 days
Soil Type: Well-drained sandy loam
pH Range: 6.0-7.0

Application Tips:

  • Regular feeding during bulb formation
  • Avoid excess nitrogen late season
  • Sulfur important for flavor

Soybean

Legumes
80
N (kg/ha)
40
P (kg/ha)
70
K (kg/ha)
Growth Period: 100-130 days
Soil Type: Well-drained loamy soil
pH Range: 6.0-6.8

Application Tips:

  • Lower nitrogen due to fixation
  • Adequate phosphorus crucial
  • Potassium for pod filling

Cotton

Fiber Crops
160
N (kg/ha)
70
P (kg/ha)
90
K (kg/ha)
Growth Period: 180-200 days
Soil Type: Deep, well-drained soil
pH Range: 5.8-8.0

Application Tips:

  • High potassium for fiber quality
  • Nitrogen during vegetative phase
  • Reduce nitrogen at flowering

Sugarcane

Cash Crops
250
N (kg/ha)
80
P (kg/ha)
180
K (kg/ha)
Growth Period: 300-365 days
Soil Type: Deep, fertile, well-drained
pH Range: 6.0-7.5

Application Tips:

  • Heavy nitrogen feeder
  • Split applications essential
  • High potassium for sugar content

Understanding the Data

NPK Requirements

Values shown are typical requirements per hectare under average conditions. Actual needs may vary based on soil fertility and yield targets.

Growth Period

Time from planting to harvest under optimal conditions. May vary based on variety and climate conditions.

Soil Requirements

Preferred soil type and pH range for optimal growth. Some crops can tolerate wider ranges with proper management.