INSECTICIDAL ACTIVITY OF LINOLEIC ACID AGAINST SPODOPTERA LITTORALIS (BOISD.)

Toxicity and reduction in larval body weight studies were performed to determine the activity of linoleic acid against the 2nd and 4th instar larvae of Spodoptera littoralis. The tested fatty acid showed high significant toxic effect on the two instars, with LC50 values of 4.78 and 9.11 g/100 mL, respectively. Linoleic acid resulted in significant larval weight reduction. The percentage of larval body weight reduction against the 4th instar was higher than that of the 2nd instar larvae.