2008 A P P L I E D A N D N AT U R A L S C I E N C E F O U N D A T I O N   Journal of Applied and Natural Science 8 (3): 1584 - 1588 (2016) Efficacy of anthranilic insecticide E2Y45 20 SC (Chlorantraniliprole) against Plutella xylostella L. in cabbage, Brassica oleracea var. capitata Sudhendu Sharma 1* , Ravinder Singh 2 and C. K. Gill 1 1 Department of Entomology, Punjab Agricultural University, Ludhiana (Punjab), INDIA 2 Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana (Punjab), INDIA * Corresponding author. E-mail: sudendhu@pau.edu Received: January 13, 2016; Revised received: May 21, 2016; Accepted: August 15, 2016 Abstract: Experiments were conducted at farmer’s cabbage fields to evaluate the bioefficacy of anthranilic insecti- cide i.e. E2Y45 20 SC (Chlorantraniliprole) having novel mode of action against the diamondback moth Plutella xy- lostella L. E2Y45 20 SC was applied @ 25.0, 37.5 and 50.0 ml/ha and was compared with Padan 50 SP (cartap hydrochloride) @ 500 g/ha and the untreated control. Lowest mean larval population after two sprays was recorded in higher dose of E2Y 45 20 SC i.e. @ 50.0 ml/ha (0.08 larvae/plant) at 7 days after treatment followed by medium and lower dose of E2Y 45 20 SC i.e. @ 37.5ml/ha (0.10 larvae/plant) and 25.0 ml/ha (0.33 larvae/plant). The larval population in these treatments was significantly lower than standard check, Padan 50 SP (2.56 larvae/plant), and untreated control (9.73 larvae/plant). The highest marketable yield (262.89 q/ha) was recorded in E2Y 45 20 SC @ 50.0 ml/ha which was significantly higher than Padan 50 SP (239.65 q/ha). Lowest yields were recorded in untreated control (106.00 q/ha). Conclusively, medium (37.5 ml/ha) and higher (50.0 ml/ha) dose of E2Y 45 20 SC (chlorantraniliprole) significantly reduced the larval population of P. xylostella and increased the cabbage yield. Keywords: Cabbage, Chlorantraniliprole, Efficacy, Plutella xylostella INTRODUCTION Diamondback moth, Plutella xylostella (Linneaus) is one of the serious pests of crucifer crops throughout the world. In India, it has become an important limit- ing factor in the successful cultivation of crucifer vege- tables and due to its attack yield losses to the tune of 52.0 per cent has been reported in cabbage (Krishnamoorthy, 2004; Rai et al., 2007). High value crops like cabbage and cauliflower are preferred host of P. xylostella, therefore necessitate effective pest control. Diamondback moth has history of eventually becom- ing resistant to insecticide used extensively against it (Syed et al., 2004). Subsequently, P. xylostella popula- tions have become resistant to all the major classes of insecticides in different areas of its geographical distri- bution (Li et al., 2006; Pu et al., 2010; Zhou et al., 2011). Therefore insecticides with different modes need to be sought as a means to manage this pest. Also it develops insecticide resistance in few genera- tions of selec-tion, and thus, extension of interval be- tween insecticides' application becomes imperative. The present study with a promising insecticide of an- thranilic diamide group, E2Y45 20 SC (Chlorantraniliprole), which exhibits larvicidal activity as an orally ingested toxicant by targeting and disrupt- ing the Ca 2+ balance, was therefore undertaken to evaluate its bioefficacy against diamondback moth on ISSN : 0974-9411 (Print), 2231-5209 (Online) All Rights Reserved © Applied and Natural Science Foundation www.jans.ansfoundation.org cabbage (Brassica oleracea var. capitata) under field conditions. It has very low toxicity for mammals, high intrinsic activity on target pests and gives long lasting crop protection. Moreover, Chlorantraniliprole has been reported to show reasonably high safety to beneficial ar- thropods (Dinter et al., 2008) and other non-target organ- isms. Thus, in the current study efficacy of this insecticide has been evaluated for the ecologically sustainable man- agement of one of the most notorious pest of cole crops. MATERIALS AND METHODS Experimental layout: Three field trials on cabbage (Brassica oleracea var. capitata) were conducted at farmer’s field at villages Sada chak, district Jalandhar (Punjab), Manderan and Jalkelan Kheri (District Fatehgarh Sahib, Punjab). Anthranilic insecticide, E2Y45 20 SC (Chlorantraniliprole) was applied @ 25.0, 37.5 and 50.0 ml/ha and was compared with stan- dard insecticide Padan 50 SP (cartap hydrochloride) @ 500 g/ha and the untreated control. Two sprays of the insecticides were given at 10 days interval. The experi- ment was replicated thrice in randomized block design and plot size of 50 m 2 was maintained. The larval population was recorded from ten randomly selected B. oleracea plants from each plot and mean population was calculated. The observations on mean larval popu- lation from 10 plants per plot per replication were re- corded before spray, 3, 7 and 10 days after spray.