2.3.2 what kind of chemical pest control pest Currently farmers use more pesticides because insects pest destruction, agricultural crops, damaged a large number of year. In particular the pesticides and chemicals because it is fast, but the use of pesticides is also toxic to insect pests harming. To be harmful to users, there may be a problem (Side effect), complications following several such residues in the environment, in food and agricultural productivity. Another problem is that the pest could create resistance to pesticides, including useful insects were destroyed to make the balance of the natural state. The more users, the lack of knowledge and understanding, and does not correct the lack responsibility. These problems are even more severe (Siriwat's Siri, 2523)
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