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    Question

    Citrus canker is a:

    A.

    bacterial disease

    B.

    fungal disease

    C.

    viral disease

    D.

    hormonal disorder

    Correct option is A

    ​The correct answer is (a) Bacterial disease

    Explanation:

    Citrus canker is a bacterial disease caused by Xanthomonas axonopodis pv. citri. It primarily affects citrus plants such as oranges, lemons, and limes, leading to lesions on leaves, stems, and fruits. These lesions appear as raised, yellowish spots and are accompanied by the bacterial exudates.

    Information Booster:

    • Symptoms of citrus canker include small, raised, water-soaked lesions on the plant's leaves, fruits, and stems. The disease spreads quickly, especially in humid conditions.
    • Control methods include using copper-based bactericides, practicing good sanitation, and removing affected parts of the plant.

    Additional Knowledge:

    • Fungal diseases in citrus include citrus root rot caused by Phytophthora species.
    • Viral diseases like Citrus tristeza virus (CTV) affect citrus trees and cause decline in tree health.

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