~ 183 ~ Journal of Entomology and Zoology Studies 2017; 5(3): 183-185 E-ISSN: 2320-7078 P-ISSN: 2349-6800 JEZS 2017; 5(3): 183-185 © 2017 JEZS Received: 28-03-2017 Accepted: 29-04-2017 Sushil Kumar Department of Entomology, Sardar Vallabhbhai Patel University of Agriculture and Technology, Modipuram, Meerut, Uttar Pradesh, India Gaje Singh Department of Entomology, Sardar Vallabhbhai Patel University of Agriculture and Technology, Modipuram, Meerut, Uttar Pradesh, India Sudhir Kumar Department of Entomology, Sardar Vallabhbhai Patel University of Agriculture and Technology, Modipuram, Meerut, Uttar Pradesh, India Awaneesh Kumar Department of Entomology, Sardar Vallabhbhai Patel University of Agriculture and Technology, Modipuram, Meerut, Uttar Pradesh, India Correspondence Sudhir Kumar Department of Entomology, Sardar Vallabhbhai Patel University of Agriculture and Technology, Modipuram, Meerut, Uttar Pradesh, India Evaluation of some novel insecticides against Helicoverpa armigera (Hubner) in black gram ( Vigna mungo ) Sushil Kumar, Gaje Singh, Sudhir Kumar and Awaneesh Kumar Abstract Black gram pod borer, Helicoverpa armigera, has become one of the most devastating pests that caused serious damages. For this reason, the present study was undertaken to determine the bio-efficacy of six insecticides viz., indoxacarb 14.5 SC, flubendiamide 480 SC, novaluron 10 EC, carbosulfan 25 EC, λ- cyhalothrin 5 EC and cypermethrin 25 EC against pod borer, H. armigera in black gram. Flubendiamide 480 SC was superior in recording lower larval population followed by indoxacarb 14.5 SC. The highest grain yield (928 kg ha -1 ) as well as cost benefit ratio (1:9.57) was obtained from the treatment flubendiamide 480 SC and followed by indoxacarb 14.5 SC. The minimum yield was obtained from the cypermethrin 25 EC (428 kg ha -1 ). In conclusion, flubendiamide 480 SC@ 75 ml ha -1 proved effective treatment against H. armigera in black gram. Keywords: Black gram, evaluation, Helicoverpa armigera, novel insecticide, pod borer and yield 1. Introduction Black gram (Vigna mungo L.) is an important pulse crop and is reported to be originated in India. The nutritive value of urdbean lies in its high and easily digestible protein and contains approximately 25-28% protein, 1.0-1.5% oil, 3.5% - 4.5% fiber, 4.5-5.5%ash and 62-65% carbohydrates on dry weight basis. Globally, the production of black gram is around 8.5 million tonnes. In India total production of black gram is 1.77 million tonnes and average productivity is 500 kg ha -1 (Anonymous, 2011) [3] . The major urdbean growing states of the country are Maharashtra, Andhra Pradesh, Madhya Pradesh, Uttar Pradesh, Tamilnadu, Karnataka and Rajasthan. Andhra Pradesh is the largest producer contributing for about 19% of the country's output, followed by Uttar Pradesh with 11% (Anonymous, 2010) [2] . Annually about 2.0-2.4 million tonnes of pulses with approximate monetary value of Rs.6000 crores are lost due to damage caused by insect pest (Reddy, 2009) [8] . The low yield of black gram in Uttar Pradesh can be attributed to many reasons, one of which includes the damage caused by insect pests. The loss in the production caused by them may reach up to 70% depending upon the severity of attack. The pod borer, H. armigera is considered to be important in causing economic losses to the farmer (Reddy et al., 1998) [7] . The immature larvae feed and forage on crops at all stages of plant development, damaging flowers and pods. Many of the researcher’s use of an indigenous materials botanicals or conventional or novel insecticides in India, but did not previously work of this black gram pest with novel chemical insecticides under agro climatic conditions in Western Uttar Pradesh. Each also opined that scientific and judicious use of novel insecticide is still the best method of plant protection. 2. Materials and Methods The experiment was carried out during kharif 2012 at Crop Research Centre of S.V.P.U.A. &T., Meerut in a randomized block design with three replications with a spacing of 40 cm between rows and 15 cm between plants in a plot size of 3 x 4 meters with a distance of 100 cm between the plots and 150 cm between the replications. Black gram variety ‘Shekhar 2’ was used in the experiments for sowing. Whole agronomic practices were applied uniformly in the field throughout the cropping season. The insecticide spraying was done with the help of Knapsack Sprayer only when the pest population density crossed economic threshold level (ETL). Six insecticides viz., Indoxacarb14.5 SC @ 500 ml. ha -1 , flubendiamide 480 SC @ 75 ml. ha -1 , novaluron 10 EC @ 750 ml. ha -1 , carbosulfan 25 EC @1000 ml. ha -1 , λ-cyhalothrin