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.

কোন মন্তব্য নেই:

একটি মন্তব্য পোস্ট করুন