Thavasinathan Peyodu from the Kanyakumari district of Tamil Nadu control leaf caterpillars in paddy by a specially made application.Thirty days after planting paddy, Peyodu applies powdered neem cake or cakes of punnaika (Calophyllum inophyllum) to control leaf caterpillars in paddy. He uses 10 kg of the cakes for one acre of land.Thirty days after planting paddy, apply powdered neem(Azadirachta indica) cake or cakes of punnaikai (Calophyllum inophyllum).
Crop Family: Poaceae
Crop Scientific Name: (Oryza sativa)
Crop Vernacular Name: Dhan
Formulation: Neem cake or cakes of punnaika (Calophyllum inophyllum)
Ingredients: Powdered neem cake or cakes of punnaikai (Calophyllum inophyllum)
"The larvicidal activity of seed and leaf extracts of Calophylluminophyllum and leaf extract of Rhinacanthusnasutus on the juveniles of Culexquinquefasciatus, Anopheles stephensi and Aedesaegypti was determined. Ethyl acetate (EA) soluble fractions of C. inophyllum and petroleum ether (PE) fraction of R. nasutus extracts showed very high larvicidal activity. Irrespective of the species of the mosquitoes tested, at concentrations ranging from 3.91 to 9.39 ppm, 9.04 to 35.49 ppm and 13.21 to 28.92 ppm of the active fractions of seed and leaf extracts of C. inophyllum and the leaf extract of R. nasutus, respectively, killed 50% of the treated larvae. The fractions also interfered with adult emergence. Exposure of the mosquitoes at any stage of their larval development to less than 0.86, 5.49 and 6.81 ppm of the active fractions of seed and leaf extracts of C. inophyllum and the leaf extract of R. nasutus, respectively, inhibited 50% of the treated larvae from emerging as adults. [Pushpalatha, E. & JAYARAMA, MUTHUKRISHNAN. (2001). Efficacy of two tropical plant extracts for the control of mosquitoes. Journal of Applied Entomology. 123. 369 - 373. 10.1046/j.1439-0418.1999.00373.x.]"
"Both the extracts exposed propitious results through brine shrimp lethality assay where Pet. ether extract found most effective with LC50 values 1413.490, 384.766 and 37.562ppm for 12, 18 and 24h of exposure respectively against A. salina. These two extracts showed promising larvicidal activity against the first instar larvae of Culexquinquefasciatus where CHCl3 extract was more active with LC50 values 237.034, 75.492 and 28.783ppm in compare to Pet. ether extract with LC50 values 1854.121, 418.648 and 42.675ppm for 18, 24 and 30h of exposure respectively. In case of repellency test Pet. ether extract found moderately active (P<0.01) against eggplant aphid (Aphis gossypii) and weakly active (P<0.05) against black bean aphid (Aphis fabae) where CHCl3 extract found weakly active (P<0.05) and inactive against eggplant aphid and black bean aphid respectively. [Rana, Md& Amin, Nowrin&Naser, Abdullah & Islam, Nurul. (2017). Screening of Calophylluminophyllum L. leaf extracts for cytotoxic, larvicidal, insect repellent and antimicrobial activities. 6. 612-616.]"