Mango is one of the most widely grown fruit crops in India. To produce healthy shoots, strong flowering, and good-quality fruits, mango trees require proper nutrition every year. The fertilizer requirement of mango plants depends on their age, soil condition, and growth stage. Applying the right dose at the right time keeps the tree healthy and ensures a good harvest. Below is an easy-to-understand guide for farmers on fertilizer doses for mango.
1. Why Do Mango Trees Need Fertilizers?
Mango trees grow continuously, and fruiting removes many nutrients from the soil. Without proper replenishment, trees become weak, produce fewer fruits, and may develop disorders such as poor fruit size, low sweetness, and early fruit drop.
Fertilizers help by improving:
Root growth
Leaf development
Flowering and fruit set
Fruit size and quality
Good nutrition also improves resistance to pests and diseases.
2. Fertilizer Dose Based on Tree Age
a. Young Plants (1–3 years)
Young mango plants need more nitrogen for vegetative growth. A common recommendation per plant is:
1st year:
Nitrogen (N): 200 g
Phosphorus (P): 150 g
Potassium (K): 150 g
2nd year:
N: 400 g
P: 300 g
K: 300 g
3rd year:
N: 600 g
P: 450 g
K: 450 g
These amounts help establish a strong trunk and canopy.
b. Bearing Mango Trees (4 years and above)
Once the tree starts flowering and fruiting, nutrients should be increased. A typical dose per plant:
Nitrogen (N): 800–1000 g
Phosphorus (P): 600–800 g
Potassium (K): 800–1000 g
The dose may vary depending on tree size and soil fertility. Potassium is especially important during fruit formation, as it improves fruit size, sweetness, and shelf life.
3. When to Apply Fertilizers?
Mango trees benefit from fertilizer applications at specific times:
a. Immediately After Harvest
This helps the tree recover from the stress of fruiting and encourages new shoot growth.
b. Before Flowering (November–January)
Applying fertilizers before the flowering season supports flower bud development and reduces flower drop.
c. During Fruit Growth
A small split dose of potassium improves fruit size and quality.
Most farmers apply fertilizers once or twice a year, depending on rainfall and irrigation facilities.
4. Use of Organic Manures
Along with chemical fertilizers, organic manures improve soil health and long-term productivity. Per plant, farmers can apply:
Farmyard manure (FYM): 20–30 kg/year
Compost, vermicompost, or poultry manure may also be used.
Organic matter improves soil structure, moisture-holding capacity, and microbial activity.
5. Micronutrient Management
Mango plants often show deficiencies in zinc, boron, and magnesium. Common symptoms include yellowing leaves, fruit cracking, and poor fruit set.
Zinc sulphate,
Boron (borax),
Magnesium sulphate
can be applied through soil or foliar sprays based on deficiency symptoms.
Foliar spraying during vegetative and pre-flowering stages helps correct deficiencies quickly.
6. Application Method
Fertilizers should be applied in a circular trench 1–1.5 m away from the trunk (root zone area). After application, light irrigation ensures better nutrient absorption.
Conclusion
The fertilizer dose in mango plants depends mainly on their age and production stage. Young plants need more nitrogen for growth, while mature trees require a balanced dose of NPK along with micronutrients for strong flowering and fruiting. Combining chemical fertilizers with organic manure and applying them at the right time helps farmers achieve higher yield and better-quality mangoes.
