The Development of Botanical Products with Special Reference to Seri-Ecosystem

The search for alternative ways of controlling sericultural pests has led to the investigation of plant sources for naturally occurring compounds which may have Insect growth regulatory, feeding deterrency, repellency and confusantcy characteristics. More than ۲۰۰۰ species of the families Asteraceae, Fabaceae and Euphorbiaceae are known that possess some insecticidal activity. Plants with insecticidal properties found in India are reported. But to use them it is necessary to conduct an analysis of the risks to the environment and to human health. Various parts of rotenone, pyrethrum, sabadilla, ryania and neem are often used to minimize pest population. Recently several other plants viz. Pongamia, Indian privet, Adathoda, Chrysanthemum, Turmeric, Onion, Garlic, Tobacco, Basili, Custard apple, Ginger and some other plants have been screened and their efficacy has been tested. The efficacy of leaf extracts of basil (Ocimum basilicum), bitter leaf (Vernonia amygdalina), lemon grass (Cymbopogen citratus), and Chenopodium ambroissoides was investigated for its insecticidal and ovicidal activity against coleopteran bruchids. Several citrus limonoids and limonin derivatives have been found to be insect antifeedants. Among all the plant originated insecticides, neem (Azadirachta indica, A. juss) is known to contain diverse array of biologically active principles of which azadirachtin (a tetranortriterpenoid) is the best known derivatives which is used in sericulture to control various pests. Botanical insecticides are prepared in the form of the crude plant material, extracts or resins. This paper includes the plants that have been reported to be insecticidal against the pests, which visit seri-ecosystem and damage the silkworm and its host plants.   REFERENCES Baskaran, V. and Narayanasamy, P. (۱۹۹۵) Traditional Pest Control. Caterpillar Publications, Mariyappa Nagar, Tamil Nadu, India. Carmona, D. M. and. Landis, D. A. (۱۹۹۹) Influence of refuge habitats and cover crops on arsenal activity density of ground beetles (Coleoptera: Carabidae) in field crops. Eviron. and Entomol. ۲۸, ۱۱۴۵ – ۱۱۵۳. Casida, J. E. (۱۹۸۳) Development of synthetic insecticides from natural products: case history of pyrethroids from pyrethrins. In: Natural Products from innovative pest measurement (Ed. Whitehead, D. L. and W. S Bowers.) PP. ۱۰۹ – ۱۲۵. Pergamon Press, New York.  Douressamy, S., Chandramohan, N., Sivaprakasam, N., Subramanian, A. and Sundra babu, P. C. (۱۹۹۷) Management of spiralling whitefly. Indian Silk, ۳۶, ۱۵ – ۱۶.   Etebari, K., Matindoost, L. and Singh, R. N. (۲۰۰۴) Decision tools for mulberry thrips Pseudodendrothrips mori (Niwa, ۱۹۰۸) management in sericultural regions; An overview. Entomologia Sinica. ۱۱, ۲۴۳-۲۵۸. Isman, M. B. (۱۹۹۷) Leads and prospects for the development of new botanical insecticides. Rev. Pesticide Toxicol. ۳, ۱ –۲۰.  Jacobson, M. (۱۹۷۵) Insecticides from plants: A review of the literature, ۱۹۵۴-۱۹۷۱. Botanical Insecticides ۸ Agriculture Hand Book ۴۶۱, U.S.D.A., Washington, D. C. pp. ۱۳۸. Jaiswal, K., Upadhyay,S., Dhami, S. S. and Gangwar, S. K. (۲۰۰۴) Application of different neem (Azadirachtin) formulations for the control of insect pest (Ergolis meriona C.) population infesting castor. Proc. National workshop on Potential and Strategies for sustainable development of Vanya silks in Himalayan states. pp. ۹۳-۹۵.  Klein, A. R. and Dunkel, F. V. (۲۰۰۳) New Pest management frontiers: Linking plant medicine to traditional knowledge. American Entomologist. ۴۹, ۷ –۷۳ Saxena, R. C. (۱۹۸۷) Antifeedants in tropical pest management. Insect Sci. Applic. ۸, ۷۳۱ –۷۳۶. Schmutterer, H. (۱۹۹۰) Properties and potential of natural pesticides from the neem tree, Azadirachta indica. Ann. Rev. Entomol. ۳۵, ۲۷۱ – ۲۹۷. Sharma, S. P., Kishore, R. and Thangavelu, K. (۲۰۰۲) Evaluation of azadirachtin against Notolophus antiqua Linn. (Lepidoptera: Lymantriidae) a major pest of primary tasar food plants. Sericologia. ۴۲, ۲۶۵ - ۲۶۹. Singh, R. N. (۱۹۹۹) Use of neem against pest of tasar food plants. Indian Silk. ۳۸, ۲۰-۲۲ Singh, R. N. and Sinha, S. S. (۱۹۹۳) Neem to control pests of tasar. Indian Silk. ۳۲, ۴۲- ۴۴. Singh, R. N. and Thangavelu, K. (۱۹۹۶) Influence of neem compound on the growth and development of immature forms of the uzifly Blepharipa zebina. Pestology. ۲۰, ۱۶-۲۱ Singh, R. N., Samson, M. V. and Datta, R. K. (۲۰۰۰) Pest Management in Sericulture. Indian Publisher Distributor, Delhi, India.  Singh, R. N. and Saratchandra, B. (۲۰۰۲) An Integrated Approach in the Pest Management in Sericulture. Int. J. Indust. Entomol. ۵, ۱۴۱-۱۵۱. Singh, R. N. and Saratchandra, B. (۲۰۰۴a) Properties and potential of natural pesticides against sericultural pests. New Horizon of Animal Science (eds. B. N. Pandey, N. Armugam, P. Natraj, S. Pranjith) Publ. Zool. Soc. India. pp. ۲۰۰–۲۰۶. Singh, R. N. and Saratchandra, B. (۲۰۰۴b) Use of neem in plant protection in Vanya silk. Proc. National workshop on Potential and Strategies for sustainable development of Vanya silks in Himalayan states. pp. ۱۲۵-۱۳۰. Singh, G. B., Sahay, A., Roy, D. K., Sahay, D. N., Kulshrestha, V., Roy, G. C. and Sinha, B. R. R. P. (۲۰۰۴) Efficacy of Botanicals against virosis in tasar silkworm, Antheraea mylitta Drury. Proc. National workshop on Potential and Strategies for sustainable development of Vanya silks in Himalayan states. pp. ۲۶۰-۲۶۳ Singh, R. N., Maheshwari M. and Saratchandra, B. (۲۰۰۴) Sampling, Surveillance and Forecasting of insect population for Integrated Pest Manage-ment in Sericulture. Int. J. Indust. Entomol. ۸, ۱۷-۲۶.

Keywords:

Botanical insecticides , Pest control , feeding deterrent and repellent