FIELD EXPERIMENTS OF THREE INSECTICIDES AGAINST SUBTERRANEAN TERMITE Psammotermes Hypostoma (DESN.)

The catched termites of untreated areas at first year 2009 showed highly population of subterranean termites Psammotermes hypostoma (Desn.), when compared with population catched at second year 2010 in soil treated with insecticides in the location A and B of all tested insecticides. In 2nd year data showed in location A (insecticides treated with water solvent), the insecticides were more toxic than insecticides in case location B (insecticides treated with kerosene solvent). Chlorpyrifos was the best for decreased of termite individuals followed by cypermethrin and fipronil in location A, while the insecticide cypermethrin was in the first rank followed by fipronil and chlorpyrifos in location B. The Chlorpyriphos found amount residues highly stability and more going deeply into depth layers in the treated soil followed by cypermethrin and fipronil, also the leachibility of insecticides treated with water solvent were more going deeply into depth layers than the insecticides treated with kerosene solvent, and vice versa in surface layers, whereas the insecticides treated with kerosene solvent more toxic and counted highly content of treated chemicals.