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Peduncle Girdling
Fungi, Bacteria Of Different Species And Nutritional Disorders
Pathogen:
Several
Type:
Risk:
HIGH
Micosis/Hongos
WHO CAUSES IT?
Stem girdling in avocado is caused by a combination of fungi, bacteria and nutritional disorders. Fungi, such as Colletotrichum spp., and bacteria, such as Pseudomonas spp., can infect the fruit stem, penetrating through wounds or natural openings. These microorganisms develop in humid and warm environments, proliferating rapidly when conditions are favorable. Fungal and bacterial spores can survive in infected plant debris, soil, and water, and are dispersed through wind, water splashes, and contaminated tools. Nutritional disorders, such as calcium deficiency, also play a critical role in the onset of this disease, weakening the stem tissue and making it more susceptible to infections.
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SYMPTOMS
Stem girdling in avocado affects the integrity of the fruit and can cause crop loss. The disease initially manifests itself on the fruit peduncle, causing visible damage and affecting the plant's ability to properly support the fruit.
- Appearance of circular or ringed lesions on the peduncle of the fruit.
- Discoloration and necrosis of the peduncle tissue.
- Premature fruit drop.
- Reduction in the size and weight of the fruits.
- Fruits with reduced commercial quality.
- Rot of the peduncle and surrounding areas.
TEMPERATURE AND HUMIDITY
20°C - 30°C
70% - 90%
TRANSMISSION PATHS
Wind-borne spores, water splashes, contaminated agricultural tools, infected soil, infected plant material
Do you want to remove this pest? Choose how you want to treat it.
TREATMENTS
Chemical treatment
• It is important to identify the cause that may be of bacterial, fungal (Colletrotrichum sp.) or nutritional origin and act as recommended for each cause.
Authorized treatments in organic farming
• It is important to identify the cause that may be of bacterial, fungal (Colletrotrichum sp.) or nutritional origin and act as recommended for each cause.
Traitements biologiques
-
Recommendations
- Implement integrated pest management practices that include crop rotation and the use of resistant varieties.
- Maintain adequate crop nutrition, especially ensuring a good supply of calcium and other essential nutrients.
- Carry out regular crop monitoring to detect early signs of disease and take preventive measures.
- Improve soil drainage to avoid the accumulation of moisture, which favors the development of pathogens.
- Disinfect agricultural tools and equipment before use to prevent the spread of pathogens.
- Apply fungicidal and bactericidal treatments according to technical recommendations and at critical moments in the crop cycle.
- Remove and destroy the remains of infected plants and affected fruits to reduce the source of inoculum.
- Promote biological control through the introduction of beneficial organisms that can reduce the pathogen population.
TREATMENTS
Homemade treatments
There are no home treatments
Natural allies
Chemical treatments
There are no treatments for this disease. Treatments are directed at the insect vectors that transmit it. See insect treatments.
RECOMMENDATIONS
- Check the back of the leaves frequently, especially in dry weather.
- Spray water on the leaves to increase humidity and prevent them from settling.
- Keep plants healthy with good watering and adequate light.
- If you see cobwebs or damage, clean the leaves with a damp cloth or pressurized water.
- Use potassium soap or neem oil every few days until they disappear.
REPELLENT PLANTS
Rosemary, Dill, Coriander
RECOMMENDED PRODUCTS
*The recommended treatments are still recommendations according to the databases of the authorities and at no time do they replace the guidelines established according to the legislation of each country
*The products shown are recommendations and are not our own products. As Amazon Associates, we earn revenue from purchases of recommended products.
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