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Relative toxicity of neem to natural enemies associated with the chickpea ecosystem: a case study

  • G.V. Ranga Rao (a1), V. Visalakshmi (a2), M. Suganthy (a3), P. Vasudeva Reddy (a4), Y.V.R. Reddy (a1) and V. Rameshwar Rao (a1)...


Neem products are often perceived as harmless to natural enemies, pollinators and other non-target organisms. For this reason, several integrated pest management (IPM) programmes have adopted neem as one of the prime components. This study revealed toxic effects of neem on soil-inhabiting and aerial natural enemies in chickpea to an extent of 41 and 29% population reduction, respectively, compared with 63 and 51% when using a conventional insecticide (endosulfan). Neem also affected the parasitization of Helicoverpa armigera (Hübner) larvae by Campoletis chlorideae Uchida up to 20%. The natural enemy population started building up from the vegetative phase and reached their peak during the reproductive phase, and there was a gradual decline from pod formation to pre-harvest phases of the crop. Adapting the currently used IPM system in chickpea using neem during the vegetative phase, followed by an application of Helicoverpa nuclear polyhedrosis virus (HNPV) at flowering and need-based application(s) of chitin inhibitors like novaluron or flufenoxuron instead of endosulfan during pod formation would strongly augment natural enemy populations. This paper discusses the relative toxicity of neem and other IPM components on soil-inhabiting and aerial natural enemies in the chickpea ecosystem.


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Ascher, K. R. S. (1993) Non-conventional insecticidal effects of pesticides available from the neem tree Azadirachta indica. Archives of Insect Biochemistry and Physiology 23, 433449.
Banken, J. A. O. and Stark, J. D. (1997) Multiple routes of pesticide exposure and the risk of pesticides to biological controls. A study of neem and seven-spotted lady beetle (Coleoptera: Coccinellidae). Journal of Economic Entomology 91, 16.
Banken, J. A. O. and Stark, J. D. (1998) Stage and age influence on the susceptibility of Coccinella septempunctata (Coleoptera: Coccinellidae) after direct exposure to Neemix, a neem insecticide. Journal of Economic Entomology 90, 11021105.
FAO (2001) FAO—Production Year Book. Vol. 55. Food and Agriculture Organization of the United Nations, Rome. 336 pp.
Fernandez, N. J., Palanignan, E. L., Soon, L. L. and Botrell, D. G. (1992) Impact of neem on non-target organisms, pp. 117121. In Proceedings of Final Workshop Botanical Pest Control Project Phase 2. IRRI, Los Baños, Philippines.
Ishaaya, I., Horowitz, A. R., Tirry, L. and Barazani, A. (2002) Novaluron (Rimon), a novel IGR: Mechanism, selectivity and importance in IPM programs. Proceedings of the International Symposium on Crop Protection, Mededelingen Faculteit Land bouwkundige en Toege paste Biologische Wetenschappen, Universiteit Gent 67, 617626.
Jayaraj, S. (1992) Pest management in pulses: An overview, pp. 154165. In Proceedings of the National Symposium on New Frontiers in Pulses Research and Development, 10–12 November 1989 (Edited by Sachan, J. N.). Directorate of Pulses Research, Kanpur, India.
Krishnamurthy, A. (1995) Effect of several pesticides on eggs, larvae and adults of the green lace wing Chrysoperla carnea Stephens. Entomon 10, 2128.
Lal, S. S. (1990) Present status of Helicoverpa armigera (Hubner) on pulses and future strategies for its management in Utter Pradesh, pp. 3441. In First National Workshop on Heliothis Management: Current Status and Future Strategies (Edited by Sachan, J. N.). Directorate of Pulses Research, Kanpur.
Lavchieva Nacheva, G. and Shishiniova, M. (2000) Effect of the insect growth regulators Cascade and Nomolt on larvae of Phytodecta fornicate Brug (Coleoptera, Chrysomelidae) and Coccinella septempunctata L. (Coleoptera, Coccinellidae). Acta Zoologica Bulgarica 52, 7578.
Luff, M. L. (1987) Biology of polyphagous ground beetles in agriculture. Agricultural Zoology Review 2, 237278.
Markandeya, V. and Diwakar, B. J. (1999) Effect of a neem formulation on four bio-agents. Plant Protection Bulletin 15, 2829.
Odak, S. C. (1982) Integrated control of gram pod borer, Heliothis armigera Hubner (Lepidoptera: Noctuidae). ICRISAT Annual Report for 1982,106 pp.
Olsazk, R. W., Pawlik, B. and Zajac, R. Z. (1994) The influence of some insect growth regulators on mortality and fecundity of the aphidophagous coccinellids Adalia bipunctata and Coccinella septempunctata L. (Col., Coccinellidae). Journal of Applied Entomology 117, 5863.
Parmar, B. S. (1993) Scope of botanical pesticides in integrated pest management. Journal of Insect Science 6, 1520.
Pfrimmer, T. R. (1964) Populations of certain insects and spiders on cotton plants following insecticide application. Journal of Economic Entomology 57, 640644.
Ranga Rao, G. V. and Shanower, T. G. (1999) Identification and management of pigeonpea and chickpea insect pests in Asia. ICRISAT Information Bulletin 57.
Ranga Rao, G. V., Pande, S., Reddy, Y. V. R., Narayana Rao, J. and Rameshwar Rao, V. (2002) Insect Pests and Diseases of Agricultural Importance and Their Management in India. Resources Management in Plant Protection. Vol. 1. Plant Protection Association of India, Hyderabad. pp. 85103.
Schmutterer, H. (1990) Properties and potentials of natural pesticides from the neem tree, Azadirachta indica. Annual Review of Entomology 25, 271297.
Singh, R. P. and Kataria, P. K. (1991) Insects, nematodes and fungi evaluated with neem (Azadirachta indica A. Juss) in India. Neem Newsletter 8 (1), 310.
Srinivasan, G. and Sundara Babu, P. C. (2000) Effect of neem products on predatory green lacewing, Chrysoperla carnea Stephens (Chrysopidae: Neuroptera). Pesticide Research Journal 12, 123126.
Wu, H. L. (1986) Determination of toxicity of some insecticides to Lycosa pseudoannulata and Apanteles cypris. Natural Enemies of Insects 8, 230231.


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Relative toxicity of neem to natural enemies associated with the chickpea ecosystem: a case study

  • G.V. Ranga Rao (a1), V. Visalakshmi (a2), M. Suganthy (a3), P. Vasudeva Reddy (a4), Y.V.R. Reddy (a1) and V. Rameshwar Rao (a1)...


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