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Dieback
Neofusicoccum Sp.
Pathogène :
Fungus
Type:
Risque:
HIGH
Seca de las ramas o muerte regresiva
Descrição da doença
Neofusicoccum sp. It is a genus of fungi that belongs to the Botryosphaeriaceae family. This pathogen is known to infect various plant species, including avocado, and is particularly harmful in hot, humid climates. Neofusicoccum sp. It survives in plant debris and in the woody tissues of infected plants. It produces reproductive structures called conidiophores, which release conidia (asexual spores) that are dispersed primarily by wind and water. When conidia find wounds or openings in the plant, they germinate and colonize the internal tissues. The fungus produces mycelium that spreads through the plant's vascular system, interfering with the transport of water and nutrients. The infection can be latent, activating under conditions of stress for the plant. Furthermore, Neofusicoccum sp. It has the ability to produce sexual structures (ascospores) in perithecia, which contributes to its genetic diversity and adaptation.
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Descrição do patógeno
Dieback caused by Neofusicoccum sp. In avocado it is a disease that mainly affects the branches and trunk of the tree. The fungus penetrates through wounds in the cortex and spreads through the vascular system, causing obstruction of the vessels and death of the affected tissues. This results in branch dieback and, in severe cases, can lead to complete death of the tree.
- Branch dieback
- Necrotic lesions in the cortex
- Dark sap exudation
- Cracking and drying of the bark
- Withering of leaves and branches
- Loss of vigor and productivity of the tree
TEMPERATURA E UMIDADE
20-30°C
60-80%
CAMINHOS DE TRANSMISSÃO</span
Wind, Water, Contaminated tools, Infected plant material
CONTROL
Tratamento químico
There are no effective treatments against this pathogen. It is recommended to cut infected branches and remove them. In the case of severe infections, it is recommended to remove the tree. It is important to disinfect tools after contact with an infected tree.
Tratamento biológico
There are no effective treatments against this pathogen. It is recommended to cut infected branches and remove them. In the case of severe infections, it is recommended to remove the tree. It is important to disinfect tools after contact with an infected tree.
Traitements biologiques
-
Recomendações
- Carry out sanitary pruning to eliminate infected branches and reduce the spread of the fungus.
- Disinfect pruning tools to prevent the transmission of spores.
- Apply preventive fungicides in periods of highest risk of infection.
- Avoid injuries to trees, especially during pruning and crop management.
- Maintain adequate ventilation and humidity management in the orchard to reduce favorable conditions for the fungus.
- Regularly monitor trees to detect early signs of the disease and act in a timely manner.
- Implement integrated pest management (IPM) practices to strengthen the overall health of the tree and its resistance to diseases.
TRAITEMENTS
Remèdes maison
There are no home treatments
Alliés naturels
Traitements chimiques
There are no treatments for this disease. Treatments are directed at the insect vectors that transmit it. See insect treatments.
RECOMMANDATIONS
- 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.
Plantes répulsives
Rosemary, Dill, Coriander
PRODUITS RECOMMANDÉS
*Os tratamentos recomendados ainda são recomendações de acordo com os bancos de dados de autoridades e em nenhum momento substituem as diretrizes estabelecidas de acordo com a legislação de cada país
*Les produits présentés sont des recommandations et ne sont pas nos propres produits. En tant qu'associés Amazon, nous gagnons des revenus grâce aux achats de produits recommandés.
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