Volume 7, Issue 1 (spring 2003)                   2003, 7(1): 215-221 | Back to browse issues page

XML Persian Abstract Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

P. Namvar, M. H. Safaralizadeh, A. A. Pourmirza. Studies on the Susceptibility of Spodoptera exigua (Hubner) Larvae to Bacillus thuringiensis Under Greenhouse Conditions. Journal of Crop Production and Processing 2003; 7 (1) :215-221
URL: http://jcpp.iut.ac.ir/article-1-396-en.html
Abstract:   (15466 Views)
In this study, susceptibility of the first three larval stages of Spodoptera exigua to Bacillus thuringiensis was investigated. To determine the LC50 values for each larval instar, 6 different logarithmic concentrations of Bacillus thuringiensis were used. A control was also included in each of the bioassays. The value of LC50 for 1st instar larvae, that had been treated one to four hours after hatching, was 311.617 ppm. For the 2nd and third instars, the larvae values of LC50 were 1356.95 and 2708.27 ppm, respectively. It was clear that larval susceptibility to Bacillus thuringiensis decreased with age. In order to enhance the Bacillus thuringiensis efficiency to control Spodoptera exigua under field conditions, Bacillus thuringiensis should be applied at egg hatch peaks.
Full-Text [PDF 212 kb]   (1177 Downloads)    
Type of Study: Research | Subject: General

Add your comments about this article : Your username or Email:

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.