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    Question

    What is the main cause of the physiological disorder

    known as "Tirak" or "bad boll opening" in cotton?
    A Over-fertilization with nitrogen Correct Answer Incorrect Answer
    B Late sowing in June Correct Answer Incorrect Answer
    C Excessive application of water Correct Answer Incorrect Answer
    D Water deficit on light sandy & alkaline soils Correct Answer Incorrect Answer

    Solution

    The physiological disorder "Tirak" or "bad boll opening" in cotton is caused by water deficit on light sandy and alkaline soils. Early sowing can contribute to this condition. Late sowing in June and applying extra water at flowering and fruiting stages can help control this disorder.

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