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How to recognize and combat crown gall in apple trees
Crown Gall
Bacterium
Type:
Risk to the plant:
INTERMEDIATE
Agrobacterium Tumefaciens
Pathogen:
Bacteriosis
WHO CAUSES IT?
Agrobacterium tumefaciens is a phytopathogenic bacteria that causes the disease known as crown gall in apple and other fruit trees. The bacteria enters plant cells through wounds in the roots or at the base of the trunk, where it transfers a fragment of its DNA to the plant cells. This causes the formation of galls or tumors, which are abnormal growths on the roots, base of the trunk, or lower branches.
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SYMPTOMS
Crown gall on apple trees manifests itself with the formation of galls or tumors on the roots and base of the trunk. These galls can affect the plant's absorption of nutrients and water, weakening it and reducing its productivity.
• Formation of galls or tumors on the roots and base of the trunk.
• Weakening of the plant.
• Reduction in the absorption of nutrients and water.
• Loss of vigor and productivity.
DEVELOPMENT CONDITIONS
Temperature:
18°C - 27°C
Humidity:
50% - 80%
HOW IS IT SPREAD?
Contact with infected roots or trunks, contaminated tools, water.
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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