~ 1391 ~ Journal of Entomology and Zoology Studies 2017; 5(6): 1391-1394 E-ISSN: 2320-7078 P-ISSN: 2349-6800 JEZS 2017; 5(6): 1391-1394 © 2017 JEZS Received: 22-09-2017 Accepted: 25-10-2017 Srivastava RM Associate Professor and Ph.D. Scholar, College of Agriculture, GBPUA&T, Pantnagar, Udham Singh Nagar, Uttarakhand, India Shivashankara Department of Entomology, College of Agriculture, GBPUA&T, Pantnagar, Udham Singh Nagar, Uttarakhand, India Shivendra Nath Tiwari Department of Entomology, College of Agriculture, GBPUA&T, Pantnagar, Udham Singh Nagar, Uttarakhand, India Correspondence Shivashankara Department Of Entomology and Agricultural Zoology, Institute of Agricultural Sciences, Banaras Hindu University Uttar Pradesh, India Evaluation of impact of novel molecule, cyenopyrafen 30% SC against predatory spiders and coccinellid beetles associated with apple orchard and its phytotoxicity on apple crop Srivastava RM, Shivashankara and Shivendra Nath Tiwari Abstract A field experiment was conducted to evaluate the impact of novel molecule, Cyenopyrafen 30% SC against predatory spiders and coccinellid beetles associated with apple orchard at Mukteshwar, Nainital district of Uttarakhand during 2013 and 2014. The mean percent reduction of Coccinella population after I and II spray @7 th DAT in standard checks viz., propargite 57%EC with 41.94 and 43.61 and fenazaquin 10%EC with 38.50 and 43.27% whereas, in Cyenopyrafen 30% SC treatments @300ml/ha, 250ml/ha, 200ml/ha and 150ml/ha showed 40.85 and 36.06; 38.50 and 32.25; 27.82 and 21.79; 22.17 and 20.72%; respectively. Similarly the spiders population in standard checks i.e., fenazaquin 10% EC with 32.84% and 43.79% and propargite 57% EC with 26.52% and 38.03% whereas, in Cyenopyrafen 30% SC treatments @300ml/ha, 250ml/ha, 200ml/ha and 150ml/ha showed 30.64 and 38.42; 24.21 and 37.25; 21.89 and 32.86; 17.34 and 24.74% during I and II spray respectively. Keywords: Cyenopyrafen, propargite, fenazaquin, apple, spiders, Coccinella, natural enemies 1. Introduction Apple (Malus domestica Borkh) has attained the distinction of being the most important fruit crop of the North Western Himalayan region of India [5] . It is considered as the world’s oldest fruit crop with a wide range of flavor and taste. In India, apple is majorly cultivated in Jammu and Kashmir, Himachal Pradesh, Uttarakhand states and parts of Arunachal Pradesh [1] . Of above states, Jammu and Kashmir hold sixty percent of annual estimated(final) apple production i.e., 2.52 lakh MT apple fruit covering an area of 2.77 lakh hectares with an average productivity of 9 MT /ha [7] . Apple being a most valued commercial crop still poor in terms of yield and quality as compared to that of the developed nations because of poor traditional cultivation and management patterns and due to a high a degree of damage done by key pests and diseases [12] . There are approximately 200 species of natural enemies are associated with apple orchards in China [10] . The major natural enemies comprises, insect predators and parasitoids, spiders, pathogenic organisms, insectivorous birds and so on, playing an important role in regulating major pests in the orchard [10] . However, the use of chemical control of insect pests in apple orchards has been an old practice, which led to natural enemy mortality, pest resurgence, and resistance development, as well causing serious environmental pollution [3] . Cyenopyrafen is a novel insecticide belongs to beta-ketonitrile acaricides group developed and commercialized by Otsuka Agri Techno and Nissan Chemicals in 2007 and 2009 respectively [6] . It is being pro-acaricide, activated by hydrolysis, acts as a potential inhibitor of mitochondrial complex II and represents a new mode of action [6] . It should be noted that in apple orchards, the maximum populations of spider mites usually occur in July and then decrease because of natural processes, as well as the activity of predatory mites or the use of selective pesticides [4] . Spraying of acaricides and insecticides adversely affect natural enemies populations while going to manage apple pests. So the present investigation “Evaluation of impact of novel molecule, Cyenopyrafen 30% SC against predatory spiders and coccinellid beetles associated with apple orchard” was carried out to find bioefficacy of acaricide on natural enemies thereby relative safety to bioagents present in apple orchard.