3 results for “P. Duraimurugan”

Research ArticleOpen accessIn the author namesSynthetic Pyrethroid Resistance in Field Strains of Helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae) in Tamil Nadu, South IndiaP. Duraimurugan, A. RegupathyResistance to synthetic pyrethroids was diagnosed in the field population of American bollworm, Helicoverpa armigera (Hubner) from Coimbatore, Tamil Nadu, South India during 2003-2004 cropping seasons. A Discriminating Dose (DD) bioassay technique was used to monitor fortnightly changes in resistance at Coimbatore where number of crops served as host plants for this pest. The resistance level of various synthetic pyrethroids … …American Journal of Applied Sciences, Vol. 2, Issue 7 · 31 Jul 2005 · 6,856 accessesView PDF Cite

Research ArticleOpen accessIn the author namesPush-pull Strategy with Trap Crops, Neem and Nuclear Polyhedrosis Virus for Insecticide Resistance Management in Helicoverpa armigera (Hubner) in CottonP. Duraimurugan, A. RegupathyInsecticide resistance in Helicoverpa armigera (Hubner) is a major threat to cotton production in India. The virus infection was found to increase the susceptibility of H. armigera to the insecticides. But, use of Nuclear Polyhedrosis Virus (NPV) on a larger scale and on cotton due to leaf alkalinity poses certain practical problems. Hence, studies were carried out to assess the … …American Journal of Applied Sciences, Vol. 2, Issue 6 · 30 Jun 2005 · 9,098 accessesView PDF Cite