Question

    Biological Control Programme is successfully used in

    control of cottony cushion scale, Icerya purchasi on fruit trees by:
    A Cyrtobagous salviniae, Correct Answer Incorrect Answer
    B Rodolia cardinalis Correct Answer Incorrect Answer
    C Neochetina bruchi Correct Answer Incorrect Answer
    D Orthogalumna terebrantis Correct Answer Incorrect Answer
    E Trichogramma australicum Correct Answer Incorrect Answer

    Solution

    Control of cottony cushion scale, Icerya purchasi on fruit trees by its predatory vedalia beetle, Rodolia cardinalis in Nilgiris. The predator was imported from California in 1929 and from Egypt in 1930 and multiplied in the laboratory and released.

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