Root & Bulb Vegetables Fertilizer Solutions
Precise nutrition for root and bulb crops to maximise yield, quality and nutrient efficiency.
Introduction to Root & Bulb Vegetables
Root vegetables like carrot (Daucus carota) and radish (Raphanus sativus), alongside bulb vegetables such as onion (Allium cepa) and garlic (Allium sativum), are nutrient-dense crops requiring precise fertilization. Correct nutrient management ensures optimal root development, uniform bulb size, enhanced flavor, and extended storage life.
Nutrient Requirements
Essential nutrients for root and bulb vegetables to promote root/bulb growth, storage quality, and crop health.
| Nutrient | Function | Deficiency Symptoms | Recommended Fertilizer |
|---|---|---|---|
| Nitrogen (N) | Supports vegetative growth and leaf area; balances root-bulb ratio | Thin roots, pale leaves, reduced bulb size | Urea, NPK 14-14-14 |
| Phosphorus (P) | Promotes strong root/bulb development and early maturity | Stunted roots, delayed bulb formation | DAP, NPK 16-20-12 |
| Potassium (K) | Enhances bulb firmness, color, sugar content, and stress resistance | Soft bulbs, poor color, reduced storage life | MOP, K-rich NPK blends |
| Calcium (Ca) & Magnesium (Mg) | Strengthens cell walls, prevents root rot and physiological disorders | Root tip burn, hollow or split bulbs | Dolomite, Ca-based amendments, MgSO₄ |
| Boron (B) & Zinc (Zn) | Essential for root elongation, bulb formation, and uniform growth | Poor bulb set, misshapen roots | Chelated Zn, foliar Boron |
Fertilizer Recommendations
Root and bulb vegetable fertilization should follow growth stages to optimize root/bulb size, quality, and nutrient efficiency.
Pre-Planting / Soil Preparation
Apply basal fertilizer rich in P and K; incorporate organic matter for strong root foundation.
Vegetative / Leaf Growth
Moderate N promotes leaf expansion without compromising root/bulb development; maintain Ca and Mg to prevent deficiencies.
Bulb / Root Formation
Provide K, B, and Zn to support uniform bulb enlargement, sugar accumulation, and overall crop quality.
Pre-Harvest / Maturation
Recommended Products
Terafon® RootMax NPK 14-14-14+Mg
Terafon® BulbBoost K30+Zn
Terafon® MicroRoot (B + Zn + Mg)
Terafon® SoilRoot Organics
Application Guidelines by Growth Stage
Pre-Planting / Soil Preparation
Vegetative / Leaf Growth
Bulb / Root Formation
Pre-Harvest / Maturation
Results & Benefits
- Improved root and bulb size, uniformity, and marketable quality
- Enhanced flavor, color, and sugar content
- Better nutrient-use efficiency and reduced waste
- Reduced physiological disorders and improved crop health
- Long-term soil fertility and sustainable productivity
Related Food Crops
Explore tailored nutrition solutions for other crop groups:
Contact & Resources
Terafon agronomists provide expert advice to optimize fertilization and maximize yield and quality in root and bulb vegetable systems.
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