SCREENING OF PESTICIDAL PROPERTIES OF LANTANA CAMARA AND CALOTROPIS PROCERA EXTRACT AND ITS APPLICATION AGAINST SPODOPTERA LITURA(TOBACCO CUT-WORM)

Abstract

In recent years botanical extracts that appears to have a vital role in the Development of low cost pesticides together with for Agricultural and forestry crop yield enhancement. Further more for the safety of Environment and public health. The Detrimental Environmental implications of the Synthetic bio-pesticides have forced to search for some substitute methods. This lead to enhanced development of compounds based on the types of naturally occurring toxins of biological origin having a lot of biological activities. This includes plant extracts, which are now well known because they are environmentally harmless and host specific. The different concentrations of plant extracts with different solvents (polar, semi-polar and non-polar) were tested for mortality properties against Spodoptera liturathird instar larvae. The prepared extract of aerial parts of plant Lantana camara and Calotropis procera were tested and the most effective concentrations have been worked out L. camara and C. procera weed plant having different medicinal properties. (MS excel & poloplus) software is applied. The LC50 and LC90 estimated using Hexane, Aqueous, Chloroform, Ethyl acetate, Ethanol extracts of C. proceraand L. camara were 0.24, 0.33, 0.20, 018, 0.15 and 1.97, 3.09, 0.90, 1.77, 0.88 respectively with fiducial limit of 0.16 to 2.44, 0.25 to 10.65, 0.17 to 2.67, 0.15 to 2.00, 0.10 to 5.97 and 0.16 to 2.44, 0.20 to 6.44, 0.17 to 1.61, 0.09 to 6.33, 0.06 to 11.12. The LC50 and LC90 limits estimated with Hexane, Aqueous, Chloroform, Ethyl acetate extract L. camara wire 0.19, 0.26, 0.16, 0.14, 0.13 and 1.35, 3.09, 0.99, 0.79, 0.59. Respectively with fiducial limits of 2.44 to 16.31, 6.44 to 4.98, 1.61 to 9.58, 6.33 to 4.56, 11.12 to 2.33 and 4.08 to 6.17, 10.65 to 5.49, 2.07 to 11.13, 2.00 to 18.96, 5.97 to 6.42 respectively.