The effects of additives of different groups : acetic acid, phosphoric acid
(acidity modifier agent), glue and Arabic gum (thickening and sticking agent), castor
oil, CAPL-2 (lipophilic agent), DL600 (polyethylene Glycol 600 Dilaurate) and sodium
IIgnosulfonate (spreading agents) on physico-chemical properties and Insecticidal
efficiency of esfenvalerate, chlorpyrifos and thiodicarb against Spodoplera littora/is
were studied. Results obtained Indicated that all tested adjuvants were phYSically compatible
with tested insecticides and showad improvement In their properties when they
added at 0.3 %. Toxicological studies indicated that there were enhanced insecticidal efficiency
of ssfenvalerats when mixed with glue, gum, phosphoric acid and castor oil.
thiodlcarb when mixed with castor Oil. phosphoric acid and acetic acid fOf chlorpyrifos
when mixed with glue, gum, phosphoric acid acetic acid and sodium-Ilgnosulfonate
since they showed high synergistic eHect values when they mixed with the previous
additives. Latent effect studies recorded reduction in Mean weight of larvae in a mixture
of esfenvalerate with glue and caster oil, thiodicarb with glue and CAPL-2 and
chlorpyrifos with glue, phosphoric acid and acetic acid, also all tesled adjuvants
increase{! \he effecti\leness of esfenvalerate in decreasing of average weight of pupa,
as well as the same indication was recorded in case of addition castor oil and acetic
acid to lhiodicarb and when gum, sodium lignosulronate and castor oil were added to
chlorpyrifos especially In females.