Aguacate
How to recognize and combat fusarium wilt in avocados
Fusarium Wilt
Fungus
Type:
Risk to the plant:
CRITICAL
Fusarium Sp.
Pathogen:
Fusariosis
WHO CAUSES IT?
Fusarium sp. It is a genus of fungi that includes numerous species pathogenic for a wide variety of plants. In avocado, Fusarium sp. It causes the disease known as fusarium wilt. This fungus can survive in the soil and in plant remains such as chlamydospores, which are structures resistant to adverse conditions. When conditions are favorable, chlamydospores germinate and produce mycelium, which colonizes plant roots through wounds or natural openings. Once inside, the fungus spreads through the vascular system, clogging the vessels and producing toxins that interfere with the transport of water and nutrients. Fusarium sp. It also produces asexual spores called conidia, which are spread by wind, water, and through contaminated growing tools. Sexual reproduction is less common, but can occur under certain environmental conditions, contributing to the genetic diversity and adaptive capacity of the pathogen.
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SYMPTOMS
Fusarium wilt in avocado is a disease that mainly affects the vascular system of the plant, resulting in a deficiency in the transport of water and nutrients. The fungus invades the roots and spreads through the xylem, causing wilting and eventually death of affected plants.
- Withering of leaves and branches
- Yellowing and premature leaf fall
- Necrotic lesions on roots and stems
- Vascular discoloration (brown streaks in the xylem)
- Reduction in plant growth and vigor
- Death of the plant in severe cases
DEVELOPMENT CONDITIONS
Temperature:
25-30°C
Humidity:
60-80%
HOW IS IT SPREAD?
Wind, Water, Contaminated tools, Infected soil, Infected plant material
HOW TO ELIMINATE IT?
Home 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.
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