Toxicity of Alpinia Galanga (Zingiberaceae) Rhizome Extracts against Spodoptera Litura (Lepidoptera: Noctuidae)
Puangsomchit, A.; Bullangpoti, V.; Pluempanupat, W.
Communications in Agricultural and Applied Biological Sciences 79(2): 145-149
2014
ISSN/ISBN: 1379-1176 PMID: 26084092 Document Number: 677916
The objective of this study was to develop an alternative strategy for the control of Spodoptera litura larvae by using botanical insecticides. Rhizomes of Alpinia galanga were extracted with hexane, dichloromethane, ethyl acetate and methanol, respectively. Each crude extract was examined for toxicity against the second instars of S. litura according to a topical application method. The dichloromethane extract was found to show the highest toxicity of all the extracts, with LD50 = 3177 and 2099 ppm at 24 and 48 h post-treatment, respectively.