Why Is My Nutmeg Tree Shedding Fruit? Causes & Fixes

Fruit shedding in nutmeg is likely to intensify this month. The main reasons are the deficiency of elements like boron, calcium, and potassium, and fungal infection. Finding the exact cause early — with the help of the Krishi Bhavan — and adopting the right control measures is essential to prevent serious crop loss.

Unnecessary nutrition often leads to the destruction of the plant or an increase in shedding, so precision matters more than guesswork when managing this condition.

Nutmeg tree showing fruit shedding with fallen fruits on ground

🌿 Main Causes of Nutmeg Fruit Shedding

Two primary factors drive nutmeg fruit drop. Understanding both helps you take targeted action rather than applying broad treatments that may worsen the problem.

🧪

Nutrient Deficiency

Deficiency of boron, calcium, and potassium are the key nutritional causes behind premature fruit drop in nutmeg trees.

🦠

Fungal Infection

Fungal pathogens attacking the tree can accelerate fruit shedding and must be treated with biological controls promptly.

⚠️ Important: Find the exact cause with the help of the Krishi Bhavan before applying any treatment. Unnecessary nutrition often leads to the destruction of the plant or an increase in shedding.

🛡️ How to Control Fungal Infection in Nutmeg

To control the fungal infection causing fruit drop, follow this step-by-step spray preparation and application method carefully:

1
Mix 30 grams (or 15 ml) of Bacillus subtilis or Pseudomonas in one liter of water.
2
Wait 10 minutes, then add 1 ml of non-ionic adjuvant to 4 liters of the spray solution.
3
Drench the entire tree with the spray solution — apply only after the sunlight has faded in the evening.

Farmer spraying Bacillus subtilis solution on nutmeg tree to control fungal infection and fruit shedding

💡 Tip: Always apply the spray after sunset or when sunlight has faded. Spraying during peak sunlight hours reduces the effectiveness of biological agents like Bacillus subtilis and Pseudomonas.

📋 Spray Mixture Quick Reference

Ingredient	Quantity	Dilution
Bacillus subtilis / Pseudomonas	30 g (or 15 ml)	Per 1 litre of water
Non-ionic adjuvant	1 ml	Added to 4 litres of spray solution (after 10 minutes)
Application timing	Evening only	After sunlight has faded — drench entire tree

❓ FAQ

Why is my nutmeg tree dropping fruits prematurely?

Premature fruit drop in nutmeg is mainly caused by deficiencies of boron, calcium, and potassium, or by fungal infections affecting the tree. It is important to identify the exact cause before applying any treatment, since incorrect inputs can worsen the problem or damage the plant further.

How do I know if my nutmeg shedding is due to nutrient deficiency or fungal infection?

The best way is to consult your local Krishi Bhavan for a proper diagnosis. They can assess soil conditions, leaf symptoms, and plant health to determine whether the cause is a nutrient deficiency (boron, calcium, or potassium) or a fungal pathogen, so the right treatment can be applied without guesswork.

What is the correct dosage of Bacillus subtilis for nutmeg fruit drop treatment?

Mix 30 grams or 15 ml of Bacillus subtilis (or Pseudomonas) in one liter of water. After 10 minutes, add 1 ml of non-ionic adjuvant to every 4 liters of the prepared spray solution. Apply this by drenching the entire tree, only after sunlight has faded in the evening.

Why should the spray be applied only after sunlight has faded?

Biological agents like Bacillus subtilis and Pseudomonas are sensitive to direct sunlight and heat. Applying them in the evening, after the sunlight has faded, ensures these beneficial microorganisms remain active and effective, maximising their ability to suppress fungal pathogens on the nutmeg tree.

Can excessive fertilisation make nutmeg fruit shedding worse?

Yes. Unnecessary nutrition can lead to the destruction of the plant or actually increase shedding. This is why getting the diagnosis right through the Krishi Bhavan before applying any nutritional inputs is critical. Applying the wrong nutrient in excess can create further imbalance and harm the tree.

What does a non-ionic adjuvant do in the nutmeg spray solution?

A non-ionic adjuvant acts as a spreader-sticker, helping the spray solution adhere better to the tree’s bark, leaves, and fruit surface. It improves the coverage and effectiveness of the biological agents (Bacillus subtilis or Pseudomonas), ensuring maximum contact with fungal pathogens that are causing fruit shedding.