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    রবিবার, ২৪ আগস্ট, ২০১৪

    Chemical Substances:
    1. Insecticides:  An insecticide is a substance used to kill insects. They include ovicides & larvicides used against insect eggs & larvae, respectively. Example: Malathion, Sevin etc.
    2. Attractant: It is a chemical substance which attracts insects towards its sources for feeding, mating & oviposition is called attractant. Example: Food lures, Pheromones etc.
    3.Repellant: It is a chemical substance which leads the insect pests to move away from the source.
    Example: Dibutyl succinate (fly) etc.
    4. Antifeedant: The antifeedants are chemicals which inhibit or deter the feeding of insects on the natural food. Example: Neem oil, Pyrethrum, Baygon etc.

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