DELPHINIUM LEPTOCARPUM NEVSKI AND DELPHINIUM PARADOXSUN BGE AS POTENTIAL SOURCES FOR PEST CONTROL IN CEREALS AND LEGUMES
Abstract
In the present study, the insecticidal activity of plant extracts from the aerial parts of Delphinium leptocarpum Nevski and Delphinium paradoxsun Bge against two major important legume insect pests, cowpea weevils (Callosobruchus maculates) and the rice weevil (Sitophilus oryzae), was studied. According to the screening results, the insecticidal toxicity of the chloroform extract of plant D. leptocarpum N. showed LC50 value of 0,70 mg / mL for adult C. maculates, 0,81 mg / mL for S. oryzae, respectively. The toxicity of the alcoholic extract of D. paradoxsun B. is LC50 0,35 mg / mL for adult C. maculates, 0,39 mg/ mL for S. oryzae, respectively. Exposure to the chloroform extract of D. leptocarpum N. at concentration of 5-10 mg / mL for 24 hours resulted in 83.0100% mortality. After 48 h exposure, the pest mortality was 100%. Under the influence of an alcoholic extract of D. paradoxsun B. at dose of 5-10 mg /mL, the mortality of pests reached 99-100%. The probable use of extracts of D. leptocarpum N. and D. paradoxsun B.as bioinsecticides is discussed here.
References
2. Rajashekar Y., Vijay Kumar H., Ravindra K.V., et al. Isolation and characterization of biofumigant from leaves of Lantana camara for control of stored grain insect pests. Ind Crops Prod, 2013, Vol 51, р.224-
3. Subramanyam B., Hagstrum D.W., Resistance measurement and management, In: Subramanyam B, Hagstrum DW (Ed.), Integrated Management of Insects in Stored Products. Marcel Dekker, 1995 New York, USA.
4. Daglish G.J., Holloway J.C., Nayak M.K., Implication of Methoprene resistance managing for Rhyzopertha dominica (F.) in stored grain. J Stored Prod Res 2003, Vol 54, p.8-12.
5. Alexander M., Biodegradation of chemicals of environmental concern. Science 1981, Vol 211, p.132138.
6. Rajendran S., Sriranjini V., Plant products as fumigants for storedproduct insect control. J Stored Prod Res 2008, Vol 44, p. 126-135.
7. Rajashekar Y., Rao L.J., Shivanandappa T., Decaleside: a new class of natural insecticide targeting tarsal gustatory sites. Natur wissenschaften 2002, Vol. 99, p.843-852.
8. Vinayaka, K.S., Prashith-Kekuda, T.R., Nandini, et.al. Potent insecticidal activity of fruits and leaves of Capsicum frutescens L. var. longa (Solanaceae). Der Pharm. Lett. 2010, Vol. 2, p.172–176.
9. Copping L.G., Duke S.O., Natural products that have been used commercially as crop protection agents. Pest Manag Sci 2002, Vol. 63, p. 524-554.
10. Васина А.Н. Инсектицидные растения. Защита растений 1978, Том 5, № 244 с.56-57.
11. Берестецкий А. О., Григорьева Е. Н., Петрова М. О. и др. Инсектицидные и фитотоксические свойства экстрактов из культур некоторых патогенов злаков // Микология и фитопатология. 2018. Т. 52. № 6. С. 408–419.
12. Abbott, W.S. A method of computing the effectiveness of an insecticide. J. Econ. Entomol. 1925. Vol. 18, p. 265-267.
13. Finney D. Probit Analysis. Journal of Pharmaceutical Sciences 1971, 60 (9) p.1432. DOI: https://doi.org/10.1002/ jps.2600600940
14. Liu Z.L., Chu S.S., Liu Q.R., Chemical composition and insecticidal activity against Sitophilus zeamais of the essential oils of Artemisia capillaris and Artemisia mongolica. Molecules 2010, Vol. 15, p. 2600-2608.
15. Rajashekar Y., Ngaihlun Tonsing, The Herbal Insecticides from Root Stock of Alocasia indica as Potential Sources for Control of Stored-Product Insect Pests Entomol Ornithol Herpetol 2014, Vol.3 p.3
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