Vol. 5 (5) : September-October 2014 issue
Green Farming Vol. 5 (5) : 902-904 (September-October, 2014)
Baseline susceptibility studies of lufenuron 5.4 % EC against tobacco caterpillar, Spodoptera litura (Fab.)
R. NAVEENA1*, A.C. HOSAMANI2, M. BHEEMANNA3, SOMASEKHAR4, J.M. NIDAGUNDI5, V.N. GHANTE6 and B. KISAN7
Deptt. of Agricultural Entomology, College of Agriculture, (Univ. of Agric. Sci. Raichur) Raichur - 584 104 (Karnataka)
Designation : 1SRF *(r.naveen.naveen@gmail.com), 2,5Assoc. Professor, 3Professor, 4Programme Co-oridn, 6,7Asstt. Professor
Subject : Entomology
Paper No. : P-1604
Total Pages : 3
Received : 05 March 2014
Revised accepted : 20 August 2014
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Citation :
R. NAVEENA, A.C. HOSAMANI, M. BHEEMANNA, SOMASEKHAR, J.M. NIDAGUNDI, V.N. GHANTE and B. KISAN. 2014. Baseline susceptibility studies of lufenuron 5.4 % EC against tobacco caterpillar, Spodoptera litura (Fab.). Green Farming Vol. 5 (5) : 902-904 ; September-October, 2014
ABSTRACT
Baseline susceptibility studies of lufenuron 5.4 % EC on third instar larvae of Spodoptera litura was conducted at the Biocontrol Laboratory, Main Agricultural Research Station, MARS, Raichur during 2012-13. Susceptibility was determined by topical bioassay technique using potters tower. The Calculated LC50 value was 12.140 ppm at F1 generation while it was 3.740 ppm at F6 generation where larvae were not exposed to lufenuron 5.4 % EC. Similarly the calculated susceptible index and susceptible ratio was 2.66 and 1.50 respectively. From the study it was evident that F6 generation was highly susceptible than F1 generation.
Key words :
Baseline susceptibility, Bioassay, LC50, Lufenuron, Spodoptera litura.
