Common Diseases Affecting Quiet Creek Onion Bulbs in Storage

Introduction:

Quiet Creek onions are a popular variety known for their excellent storage capabilities. However, like any other crop, they are susceptible to various diseases that can impact their quality and shelf life. In this article, we will explore the common diseases that affect Quiet Creek onion bulbs during storage.

1. Fusarium Basal Rot

Description:

Fusarium basal rot is a fungal disease caused by the pathogen Fusarium oxysporum. It primarily affects the basal plate and roots of onion bulbs, leading to rotting and decay. The infected bulbs may develop a soft, watery rot with a foul odor.

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Symptoms:

• Yellowing and wilting of foliage
• Brown discoloration and softening of the basal plate
• White fungal growth on the affected tissues

Prevention and Control:

• Plant certified disease-free onion sets
• Rotate crops to prevent buildup of the pathogen in the soil
• Avoid overwatering and ensure proper drainage

2. Botrytis Neck Rot

Description:

Botrytis neck rot, caused by the fungus Botrytis allii, is a common disease affecting onion bulbs in storage. It primarily affects the neck and upper portion of the bulb, leading to a soft rot that can spread to other tissues.

Symptoms:

• Browning and softening of the neck area
• Grayish-brown fuzzy mold growth on the affected tissues
• Shriveling and collapse of the bulb

Prevention and Control:

• Ensure proper curing of onions before storage
• Provide good air circulation and maintain optimal humidity levels in storage facilities
• Regularly inspect stored bulbs and remove any infected ones

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3. Penicillium Decay

Description:

Penicillium decay is a post-harvest disease caused by various species of the Penicillium fungus. It commonly affects onion bulbs during storage, especially under humid conditions. The fungus enters through wounds or cracks in the bulb’s outer layers.

Symptoms:

• Greenish-blue mold growth on the outer scales
• Softening and decay of the affected tissues
• Musty odor

Prevention and Control:

• Properly cure and dry onions before storage
• Store onions in a cool, dry environment with good ventilation
• Regularly inspect stored bulbs and remove any infected ones

Conclusion

Understanding the common diseases that affect Quiet Creek onion bulbs in storage is crucial for maintaining their quality and preventing significant losses. By implementing appropriate prevention and control measures, such as proper curing, storage conditions, and regular inspection, farmers can minimize the impact of these diseases and ensure the longevity of their onion crop.

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Keywords: storage, diseases, common, onions, disease, tissues, prevention, control, fusarium