Bulb Crop Nutrition | Fertilizers, Micronutrients & Biostimulants for Bulb Crops

Provide your bulb crops with complete nutrition from planting to harvest. Browse fertilizers, micronutrients, and biostimulants recommended for root development, vegetative growth, bulb initiation, bulb development, bulb enlargement, bulb maturity, quality improvement, and yield enhancement to support healthy plants, bigger bulbs, improved bulb weight, enhanced storage quality, and maximum yield.

This collection helps bulb crop growers easily select products based on crop growth stage, crop requirement, or nutrient deficiency symptoms.

Suitable for Onion, Garlic, Shallot, Leek and other bulb crops.

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Crop Duration

Average Crop Duration: 90-180 Days
(Varies depending on crop and variety)

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Products Available in This Collection

Water Soluble Fertilizers

• 12-61-00 (MAP)

• 19-19-19

• 13-40-13

• 00-52-34 (MKP)

• Calcium Nitrate

• Potassium Nitrate (13-00-45)

• 00-00-50 (SOP)

Micronutrients

• Zinc EDTA 12%

• Iron EDTA 12%

• Boron 20%

• Calcium EDTA 12%

• Magnesium EDTA

• Manganese EDTA

• Copper EDTA

• Chelated Micronutrient Mix

Specialty Nutrition Products

• Calcium Boron

• Calcium + Boron + Magnesium EDTA

• Magnesium Sulphate (MgSO₄)

Biostimulants

• Amino Acid 80%

• Seaweed Extract

• Humic Acid

• Fulvic Acid 80%

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Bulb Crop Nutrition Schedule

Crop Stage	Crop Days After Planting	Recommended Products
🌱 Root Development & Establishment	0-20 Days	12-61-00, Humic Acid, Fulvic Acid 80%, Seaweed Extract
🌿 Vegetative Growth	20-45 Days	19-19-19, Zinc EDTA 12%, Amino Acid, Fulvic Acid 80%
🌼 Bulb Initiation	40-70 Days	13-40-13, Boron 20%, Calcium Boron, Seaweed Extract
🧄 Bulb Development	60-100 Days	00-52-34, Calcium Boron, Calcium + Boron + Magnesium EDTA
📈 Bulb Enlargement	80-130 Days	Potassium Nitrate, Calcium EDTA 12%, Magnesium EDTA
🟤 Bulb Maturity & Quality Development	110-160 Days	00-00-50, Potassium Nitrate, Fulvic Acid 80%
🚜 Yield Enhancement & Storage Quality	120-180 Days	SOP, Potassium Nitrate, Micronutrient Mix, Amino Acid

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Stage-Wise Nutrition Guide

🌱 Root Development & Establishment (0-20 Days)

Objective

• Faster establishment

• Strong root growth

• Better nutrient uptake

Recommended Products

• 12-61-00

• Humic Acid

• Fulvic Acid 80%

• Seaweed Extract

Dosage

Foliar Spray

• 12-61-00: 5 g/L

• Humic Acid: 1-2 g/L

• Fulvic Acid 80%: 0.5-1 g/L

• Seaweed Extract: 1-2 g/L

Drip Fertigation

• 12-61-00: 1-2 kg/acre

• Humic Acid: 500 g/acre

• Fulvic Acid 80%: 250-500 g/acre

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🌿 Vegetative Growth (20-45 Days)

Objective

• Vigorous leaf growth

• Better photosynthesis

• Increased biomass production

Recommended Products

• 19-19-19

• Zinc EDTA 12%

• Amino Acid 80%

• Fulvic Acid 80%

Dosage

Foliar Spray

• 19-19-19: 5 g/L

• Zinc EDTA: 0.5-1 g/L

• Amino Acid: 1-2 g/L

Drip Fertigation

• 19-19-19: 2-3 kg/acre

• Zinc EDTA: 250-500 g/acre

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🌼 Bulb Initiation (40-70 Days)

Objective

• Early bulb formation

• Uniform bulb initiation

• Better nutrient translocation

Recommended Products

• 13-40-13

• Boron 20%

• Calcium Boron

• Seaweed Extract

Dosage

Foliar Spray

• 13-40-13: 5 g/L

• Boron 20%: 1 g/L

• Calcium Boron: 1-2 g/L

Drip Fertigation

• 13-40-13: 2-3 kg/acre

• Boron Products: 250-500 g/acre

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🧄 Bulb Development (60-100 Days)

Objective

• Better bulb formation

• Increased bulb size

• Improved bulb weight

Recommended Products

• 00-52-34

• Calcium Boron

• Calcium + Boron + Magnesium EDTA

• Amino Acid

Dosage

Foliar Spray

• MKP: 5 g/L

• Calcium Boron: 1-2 g/L

Drip Fertigation

• MKP: 2-3 kg/acre

• Specialty Products: 500 g-1 kg/acre

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📈 Bulb Enlargement (80-130 Days)

Objective

• Bigger bulbs

• Higher bulb weight

• Better bulb firmness

Recommended Products

• Potassium Nitrate

• Calcium EDTA 12%

• Magnesium EDTA

• Fulvic Acid 80%

Dosage

Foliar Spray

• Potassium Nitrate: 5 g/L

• Calcium EDTA: 1-2 g/L

• Magnesium EDTA: 1 g/L

Drip Fertigation

• Potassium Nitrate: 3-5 kg/acre

• Calcium EDTA: 500 g-1 kg/acre

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🟤 Bulb Maturity & Quality Development (110-160 Days)

Objective

• Better bulb colour

• Improved pungency

• Enhanced storage quality

Recommended Products

• 00-00-50

• Potassium Nitrate

• Fulvic Acid 80%

Dosage

Foliar Spray

• SOP: 5 g/L

• Fulvic Acid 80%: 0.5-1 g/L

Drip Fertigation

• SOP: 3-5 kg/acre

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🚜 Yield Enhancement & Storage Quality (120-180 Days)

Objective

• Higher bulb yield

• Better shelf life

• Reduced storage losses

Recommended Products

• SOP

• Potassium Nitrate

• Micronutrient Mix

• Amino Acid

Dosage

Foliar Spray

• SOP: 5 g/L

• Micronutrient Mix: 1-2 g/L

Drip Fertigation

• SOP: 3-5 kg/acre

• Micronutrient Mix: 500 g-1 kg/acre

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Nutrient Deficiency Solutions

Deficiency	Symptoms	Recommended Product
Zinc Deficiency	Stunted growth, narrow leaves	Zinc EDTA 12%
Iron Deficiency	Yellow young leaves	Iron EDTA 12%
Boron Deficiency	Poor bulb formation	Boron 20%, Calcium Boron
Calcium Deficiency	Soft bulbs, poor storage life	Calcium EDTA 12%, Calcium Boron
Magnesium Deficiency	Yellowing older leaves	Magnesium EDTA, MgSO₄
Multiple Deficiencies	Weak plants, low yield	Chelated Micronutrient Mix

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Problem-Based Solutions

Crop Problem	Recommended Products
Poor Root Growth	12-61-00 + Humic Acid + Fulvic Acid 80%
Weak Vegetative Growth	19-19-19 + Amino Acid
Delayed Bulb Initiation	13-40-13 + Boron 20%
Small Bulbs	MKP + Potassium Nitrate
Poor Bulb Enlargement	Potassium Nitrate + SOP
Soft Bulbs	Calcium EDTA 12% + Calcium Boron
Poor Storage Life	SOP + Calcium EDTA 12%
Low Bulb Weight	Potassium Nitrate + Fulvic Acid 80%
Low Yield	SOP + Potassium Nitrate + Micronutrient Mix
Yellow Leaves	Iron EDTA or Magnesium EDTA

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Quick Dosage Guide

For 15 Litre Knapsack Sprayer

Product	Quantity
Water Soluble Fertilizers	75 g
Micronutrients	8-15 g
Calcium Products	15-30 g
Fulvic Acid 80%	8-15 g
Amino Acid 80%	15-30 g
Seaweed Extract	15-30 g
Humic Acid	15-30 g

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Benefits

✓ Strong Root Development

✓ Vigorous Leaf Growth

✓ Better Bulb Initiation

✓ Improved Bulb Development

✓ Increased Bulb Size and Weight

✓ Better Bulb Firmness

✓ Improved Storage Life

✓ Enhanced Quality

✓ Reduced Post-Harvest Losses

✓ Higher Marketable Yield

✓ Suitable for Foliar Spray and Drip Fertigation

Suitable For

Onion • Garlic • Shallot • Leek • Spring Onion • Commercial Bulb Crops