Care of Mango Trees After Flowering: Practical Steps to Improve Fruit Quality and Reduce Alternate Bearing

Mango (Mangifera indica L.) is known as the “King of Fruits” and is one of the most economically important fruit crops in India. However, many mango growers face common problems after flowering, including heavy fruit drop, small fruit size, pest infestations, and alternate bearing (biennial bearing).

The period immediately after flowering is the most critical stage in mango cultivation. During this phase, fruit set occurs and the small fruits begin to develop. If proper care is not taken at this stage, a large number of fruits may drop and the tree may also suffer from irregular bearing in the following years.

Proper orchard management practices after mango flowering can significantly improve fruit retention, fruit quality, and overall yield while reducing the chances of alternate bearing.

This article explains the important management practices for mango trees after flowering that farmers and growers should follow.

1. Understanding the Mango Flowering and Fruit Set Stage

After flowering, mango trees undergo several physiological processes that determine the final yield.

Important processes occurring during this stage include:

• Pollination and fertilization

• Fruit set and early fruit development

• Physiological fruit drop

• Nutrient accumulation in developing fruits

• Competition between vegetative growth and fruit development

It is common that only a small percentage of flowers convert into fruits. In fact, out of thousands of flowers in a mango panicle, only a few develop into mature fruits.

Therefore, the goal of post-flowering management is to improve fruit retention and fruit development.

Proper water management is essential after flowering because developing fruits require sufficient moisture.

Recommended irrigation practices

• Provide light irrigation after fruit set

• Maintain uniform soil moisture

• Avoid water stress during fruit development

• Prevent waterlogging in the orchard

Water stress during this stage can cause severe fruit drop and poor fruit growth.

Benefits of proper irrigation

• Better nutrient absorption

• Improved fruit size

• Reduced physiological fruit drop

• Enhanced fruit quality

For rainfed orchards, farmers can apply mulching using dry leaves, straw, or crop residues to conserve soil moisture.

3. Nutrient Management for Fruit Development

Mango trees require balanced nutrition after flowering to support fruit growth.

Important nutrients required

Macronutrients

• Nitrogen

• Phosphorus

• Potassium

Micronutrients

• Zinc

• Boron

• Calcium

• Magnesium

Recommended foliar sprays

At pea-sized fruit stage, farmers can spray:

• 1% Potassium nitrate (KNO₃)

• 0.5% Zinc sulphate + 0.2% Boric acid

These sprays help in:

• Improving fruit retention

• Enhancing fruit size

• Improving fruit quality

• Reducing fruit drop

Micronutrients are particularly important for cell division and fruit development.

4. Managing Fruit Drop in Mango

Fruitdrop is one of the biggest challenges faced by mango growers. Normally, mango trees experience three stages of fruit drop.

Types of fruit drop

Post-pollination drop – occurs soon after fruit set

Pea-size fruit drop – occurs during early fruit development

Pre-harvest drop – occurs before fruit maturity

Measures to reduce fruit drop

Farmers can adopt the following practices:

• Maintain proper irrigation

• Apply micronutrient sprays

• Protect trees from pests and diseases

• Spray NAA (Planofix) at 20 ppm at pea stage

These practices help improve fruit retention and yield.

5. Pest and Disease Management After Flowering

During fruit development, mango trees become vulnerable to several pests and diseases that affect fruit quality.

Major mango pests

• Mango hopper

• Fruit fly

• Mealy bug

• Thrips

Important diseases

• Powdery mildew

• Anthracnose

• Sooty mold

Management practices

• Spray recommended insecticides or neem-based products

• Maintain orchard sanitation

• Remove infected plant parts

• Monitor pest populations regularly

Integrated pest management ensures healthy fruit development and improved marketable yield.

6. Mulching for Soil Moisture Conservation

Mulching is a simple but effective technique to improve mango orchard productivity.

Benefits of mulching

• Conserves soil moisture

• Improves soil fertility

• Enhances microbial activity

• Reduces weed growth

• Maintains soil temperature

Farmers can use organic mulching materials such as straw, dry leaves, coconut husk, or compost.

Mulching is especially useful in dry regions where irrigation water is limited.

7. Canopy Management for Better Fruit Development

Proper canopy management ensures good air circulation and sunlight penetration inside the tree canopy.

Light pruning of dead, diseased, and overcrowded branches helps maintain tree health and improves fruit quality.

Benefits of canopy management:

• Better photosynthesis

• Reduced disease incidence

• Improved flower bud formation for the next season

8. Reducing Alternate Bearing in Mango

Alternatebearing (also called biennial bearing) is a common problem in mango cultivation where trees produce heavy yield in one year and very low yield in the next year.

Causes of alternate bearing

• Nutrient imbalance

• Excessive fruit load in one season

• Poor orchard management

• Environmental stress

Practices to reduce alternate bearing

• Balanced fertilization

• Proper irrigation

• Fruit thinning in heavy crop years

• Pruning after harvest

• Growth regulator application

Maintaining a balance between vegetative growth and fruit production helps ensure regular annual yields.

9. Monitoring Orchard Health Regularly

Farmers should regularly inspect their orchards to monitor:

• Pest infestation

• Disease symptoms

• Nutrient deficiencies

• Fruit drop patterns

Early detection of problems helps in timely management and better yield protection.

Conclusion

The stage after mango flowering plays a decisive role in determining the final yield and fruit quality. By adopting proper management practices such as balanced nutrition, irrigation management, pest control, and canopy management, farmers can significantly improve fruit retention and reduce the chances of alternate bearing.

Scientific orchard management practices not only increase mango yield but also ensure better fruit size, improved quality, and higher market value.

With proper care during this critical stage, mango growers can achieve consistent and profitable production every year.

Frequently Asked Questions (FAQ)

1. Why do mango fruits drop after flowering?

Mango fruits drop after flowering mainly due to poor pollination, nutrient deficiency, water stress, pest attacks, and hormonal imbalance. Proper irrigation, micronutrient sprays, and pest management can significantly reduce fruit drop.

2. What spray should be applied after mango flowering?

After mango flowering, farmers commonly apply potassium nitrate (1%), zinc sulphate (0.5%), and boric acid (0.2%) as foliar sprays. These nutrients improve fruit retention, increase fruit size, and enhance fruit quality.

3. How can fruit drop in mango be reduced?

Fruit drop in mango can be reduced by maintaining proper irrigation, applying micronutrient sprays, controlling pests, and spraying NAA (Planofix) at 20 ppm during the pea-size fruit stage.

4. How often should mango trees be irrigated after flowering?

Mango trees should receive light irrigation every 7–10 days depending on soil moisture and weather conditions. Avoid both drought stress and waterlogging during fruit development.

5. What nutrients are important for mango fruit development?

Important nutrients for mango fruit development include nitrogen, phosphorus, potassium, zinc, boron, and calcium. These nutrients support fruit growth, improve fruit size, and enhance fruit quality.

6. What is alternate bearing in mango?

Alternate bearing is a condition where mango trees produce heavy yield in one year (on year) and very low yield in the following year (off year). It is also called biennial bearing.

7. How can alternate bearing in mango be controlled?

Alternate bearing can be reduced by balanced fertilization, proper irrigation, pruning after harvest, fruit thinning in heavy crop years, and maintaining good orchard management practices.

8. Which pests attack mango after flowering?

Common pests attacking mango after flowering include mango hopper, fruit fly, mealy bugs, and thrips. These pests damage developing fruits and reduce yield if not controlled in time.

9. Why is mulching important in mango orchards?

Mulching helps conserve soil moisture, suppress weeds, improve soil fertility, and maintain soil temperature. Organic mulching materials like straw and dry leaves are commonly used in mango orchards.

10. How can mango fruit quality be improved?

Mango fruit quality can be improved through balanced fertilization, proper irrigation, pest and disease control, micronutrient sprays, and good canopy management.