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Mandarin orange > Fruit rot
Why Are My Mandarin orange Fruits Rotting Before Harvest?
Mandarin orange, also known as Clementine tree, Mandarine
Fruit rot is a destructive disease affecting Mandarin orange, characterized by the decay of fruit, diminishing its overall quality and yield. Caused primarily by fungal pathogens, the disease presents major agricultural challenges due to its infectious and sometimes lethal nature.

Symptom Analysis

Initial symptoms include water-soaked spots on the rind, which later turn brown or black. The interior of the Mandarin orange fruit may also show rotten, discolored segments, often accompanied with a foul smell.
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What Causes Fruit rot Disease on Mandarin orange?

Fungal infection
Most often, fruit rot in Mandarin orange is caused by the fungus Phytophthora citrophthora, which invades the fruit causing it to decay.
Environmental factors
Unfavorable environmental conditions such as high humidity, excessive rainfall, poor air circulation, and inadequate light conditions can facilitate the growth and spread of the fungus.
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How to Treat Fruit rot Disease on Mandarin orange?

Non pesticide
Pruning: Regular pruning of the Mandarin orange plant helps improve air circulation and light penetration, thereby reducing the conditions favorable for fungal growth.

Proper irrigation: Avoid overwatering and ensure proper drainage to prevent creating a moist environment conducive to fungus.
Pesticide
Fungicide application: Application of suitable fungicides, as per manufacturer's instructions, can control the spread of the disease.

How to Prevent Fruit rot on Mandarin orange?

Planting distance
Maintain a suitable distance between Mandarin orange plants to facilitate proper air circulation and prevent spore spread.
Hygienic Practices
Regular cleaning of fallen fruits and leaves from the field prevents build-up of fungal spores.
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When is Fruit rot Most Active Period on Mandarin orange?

The disease is most active during the warm and wet months of summer and early autumn. These conditions favor the rapid multiplication and spread of the fungal spores.

Infectivity

The disease spreads quickly through spores carried by wind or rain, making it highly infectious.

Lethality

While not typically lethal to the Mandarin orange plant itself, fruit rot can significantly reduce the yield and quality of the fruit.

FAQs on Mandarin Orange

Can Mandarin orange recover from a fruit rot infection?
Yes, if infected fruits are removed and appropriate fungicidal treatment applied, Mandarin orange can recover from a fruit rot infection.
Does fruit rot kill the Mandarin orange plant?
The disease does not usually kill the plant but can significantly reduce the fruit yield and quality.
How can I know if my Mandarin orange plant has fruit rot?
Rotting fruit exhibiting dark, discolored patches and a foul smell are key indicators of fruit rot.
Are the fruits of a Mandarin orange plant infected with fruit rot safe to eat?
Rotting fruits are not safe to consume due to potential health risks from fungal pathogens.
What is the best time to treat fruit rot in Mandarin orange?
Early detection and treatment at the initial stages of disease is most effective in managing fruit rot.
Can fruit rot be prevented in Mandarin orange?
Yes, maintaining good hygiene, applying suitable fungicides, and employing good agricultural practices can help prevent fruit rot.
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