Amit K. Kaushik*, 1Kalpana Bisht, Sunil K. Yadav and Poonam Srivastava
Department of Entomology, College of Agriculture, G. B. Pant University of Agriculture and Technology, Pantnagar-263145
1Department of Entomology and Agricultural Zoology, Banaras Hindu University, Varanasi-221005
Email; kaushikento@gmail.com
Received-06.11.2016, Revised-19.11.2016
Abstract: A field study was conducted to evaluate the safety of insecticides against natural enemies associated with insect pests of cowpea. The results revealed that all the treatments exerted significant impact on the populations of natural enemies (coccinellids, syrphid flies and spiders). However, thiamethoxam 30 FS was found to be relatively safe insecticide against these natural enemies. Combinations (seed treatment with thiamethoxam 70 WS + spray with imidacloprid 17.8 SL, seed treatment with thiamethoxam 30 FS + spray with imidacloprid 17.8 SL, seed treatment with imidacloprid 17.8 SL + spray with thiamethoxam 30 FS), imidacloprid 17.8 SL and spinosad 45 EC were moderate toxic while quinalphos 25 EC was the most toxic for the same. Thus, thiamethoxam, imidacloprid or their combinations as seed treatment and spray, and spinosad can be used in cowpea ecosystem for better pest management as they are less toxic for natural enemies.
Keywords: Insecticides, Natural enemies, Predators, Vigna unguiculata
REFERENCES
Adipala, E., Nampala, P., Karungi, J. and Isubikalu, P. (2000). A review on options for management of cowpea pests: experiences from Uganda. Integr. Pest Manag. Rev., 5: 185–196.
Amin, M.A., Hameed, A., Rizwan, M. and Akmal, M. (2014). Effect of different insecticides against insect pests and predators complex on Brassica napus L. under field conditions. International Journal of Scientific Research in Environmental Sciences, 2(9): 340-345.
Asiwe, J.A.N., Belane, A. and Dakora, F.D. (2009).Evaluation of cowpea breeding lines for nitrogen fixation at ARC-Grain Crops Institute, Potchefstroom, South Africa. Paper presented at the 16th International Congress on Biological Nitrogen Fixation, Montana, USA, pp. 14 -19.
Bharani, G.N., Kohilambal, H., Sivasubramanian, P. and Banuprathap, G. (2015). Comparative efficacy of bio pesticides and insecticides against tomato thrips (Thrips tabaci Lind.) and their impact on coccinellid predators. The Bioscan, 10(1): 207-210.
Dhanalakshmi, D.N. and Mallapur, C.P. (2008). Evaluation of promising molecules against sucking pests of okra. Ann. Pl. Protec. Sci., 16(1): 29-32.
Galvan, T.L., Koch, R.L. and Hutchison, W.D. (2005). Toxicity of commonly used insecticides in sweet corn and soybean to multicolored Asian lady beetle (Coleoptera: Coccinellidae). J. Econ. Entomol., 98(3): 780-789.
Gogoi, P., Bora, D.K., Bhattacharjee, B. and Borah, R.K. (2013). Effect of plant extract and insecticides on immature stages of Trichogramma chilonis. Ann. Pl. Protec. Sci., 21(1): 27-29.
Kannan, M., Uthamasamy, S. and Mohan, S. (2004). Impact of insecticides on sucking pests and natural enemy complex of transgenic cotton. Current science, 86(5): 726-729.
Kumar, S., Pal, S., Lal, G., Singh, D.K. and Umrao, R.S. (2014). Bio-efficacy of insecticides and bio-pesticides against pod borer and jassids on cowpea, Vigna uniguiculata (L.) Walp. Ann. Pl. Protec. Sci., 22(2): 264-267.
Misra, H.P. (2009). New insecticides for management of rice green leafhopper, Nephotettix virescens Dist. Ann. Pl. Protec. Sci.,17(1): 5-8.
Ningthoujam, K. and Ganesh, K.M. (2012). Influence of insecticides on mango hoppers and spiders in mango orchard. Ann. Pl. Protec. Sci., 20(1): 341-343.
Patil, P.P., Mohite, P.B. and Chormule, A.J. (2015). Bio-efficacy of insecticides as seed dressers against leaf eating caterpillar, Spodoptera litura (Fab.) infesting soybean. Ann. Pl. Protec. Sci., 23(1): 9-11.
Samanta, A., Somchoudhury, A. K. and Sarkar, B. (2005). Persistent toxicity of some insecticides to Trichogramma chilonis and T. japonicum on paddy. Ann. Pl. Protec. Sci., 13(2): 369-372.
Sharma, S. S. and Kaushik, H. D. (2010).Effect of spinosad (a bioinsecticide) and other insecticides against pest complex and natural enemies on eggplant (Solanum melongena L.). J. Ent. Res.,34(1): 39-44.
Singh, S., Prasad, C.S. Nath, L. and Tiwari, G.N. (2008). Eco-friendly management of Scirpophaga incertulas (Walk.) and Cnaphalocrocis medinalis (Guen.) in basmati rice. Ann. Pl. Protec. Sci., 16(1): 11-16.
Suhail, A., Iqbal, J., Arshad, M., Gogi, M.D., Arif, M.J. and Shafait, T. (2013). Comparative efficacy of insecticides as seed treatment against wheat aphid and its coccinellid predator. Pak. Entomol., 35(1): 17-22.
Thakare, S. M., Dhoble, B. and Thakare, A.S. (2009). Effect of different chemicals applied by seed or stem smearing technique on natural enemies of Bt cotton. Crop Research, 38(1/3): 205-207.