1Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore - 641 003, India
2Department of Plant Biotechnology, Tamil Nadu Agricultural University, Coimbatore - 641 003, India
3Department of Nano Science and Technology, Tamil Nadu Agricultural University, Coimbatore - 641 003, India
4Dept. of Floriculture and Landscaping, Tamil Nadu Agricultural University, Coimbatore - 641 003, India
*E-mail: nischi2219@gmail.com
Online Published on 25 July, 2022.
Insecticidal activity of the trans-cinnamaldehyde was studied against the cigarette beetle, Lasioderma serricorne (F.) under laboratory conditions. The egg stage was the most tolerant stage for both contact and fumigant toxicity. The mortality of L. serricorne grubs was highest (96.67%) at 2000 ppm of trans-cinnamaldehyde when applied topically. In case of adults, highest mortality of 98.33 per cent was observed at 4000 and 5000 ppm of transcinnamaldehyde after 48 hours after treatment. Trans-cinnamaldehyde caused 96.67 and 98.33 per cent mortality of grubs and adults of L. serricorne, respectively at 50000 ppm after 48 hours of exposure over treated surface. In case of surface treatment, the LC50 values of trans-cinnamaldehyde for grubs and adults of L. serricorne were 18303.78 and 10747.42 ppm, respectively after 48 h of exposure. In fumigant toxicity study, 60.00 and 98.33 per cent mortality were observed against grubs and adults of L. serricorne, respectively at 50000 ppm after 48 h of exposure. The LC50 values of trans-cinnamaldehyde for grubs and adults of L. serricorne when tested for fumigant toxicity were 9406.68 and 16550.70 ppm, respectively after 48 h of exposure.
Lasioderma serricorne, Trans-cinnamaldehyde, Bioactivity, fumigant toxicity and LC50 value
