Dana April Joy Culango,
Val Charlean Maurisse Guevara,
Joshua Stan martem,
Mary Tiffany Toring,
Elvira . Arong
Nowadays, cockroaches are found to be living in normal shelters and common houses. Also, cockroaches have a worldwide distribution and can adapt to various types and kinds of environments. This type of pest should be given much importance for they carry and transmit diseases and cause health problems to the vast number of the populations. With their increasing number, the demands for counter measures for pest control have also increased. Jatropha curcas is a plant with multiple purposes, characteristics, and potentials. The plant's leaf extract has a wide range of insects that are affected by its insecticidal properties examples would be beetles, termites, worms, and mosquitoes. Jatropha curcas leaf extract would then be used as an alternative choice for an insecticide that is beneficial and less harmful to the environment.
The study aimed to determine the effect of Jatropha curcas leaf crude extract as an insecticide against American cockroaches. The experiment for our study was conducted in one of the Biology Laboratories within the premises of Cebu Doctors' University. The target organism of this study was the American Cockroaches (Periplaneta americana). The cockroaches were acquired from a single source (breeder) to ensure their homogeneity. Concentration of the extract was kept constant throughout the experiment for the determination of the mortality of subjects. The control groups, Baygon (positive) and distilled water(negative), were also used in the experiment. Our study showed that there was a 100% mortality significant difference between the experimental control and the positive control, while the negative control and experimental control showed 0% mortality significant difference. The plant extract contains organic compounds that are toxic to the subject, but showed it was not as efficient as the commercially used products with an insecticidal effect to kill the cockroaches. The positive control which was Baygon showed 100% mortality while the negative control which was distilled water showed 0% mortality.
Based on the findings, the harmful compounds found within the Jatropha curcas leaf extract had shown little or low levels of the extract's components to display toxicity to the Periplaneta cockroaches. The components also available within the extract given off suggestions that the concentration of the components were not effective. Baygon had shown effectively in its pest control capabilities and such is a commercially used product. Although the capabilities and effects of the Jatropha curcas weren't as potent as compared to the capabilities and effects of Baygon, they both achieved the desired result which is to kill the subjects (cockroaches). With this study, new methods and recommendations will follow. The recommendations: to determine other parasites and insects that can be affected by the toxicity of the Jatropha curcas leaf crude extract and to determine the specific component and concentration of Jatropha curcas leaf crude extract that could be toxic to some insects.
5. Ebuehi, O.A. , Okorie, N.A. . "Phytochemical screening and quantificationof flavonoids from leaf extract of Jatropha curcas Linn." Nigerian Quarterly Journal of Hospital Medicine
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9. Habou, Z. A. , Haougui, A. , Mergeai, G. , Haubruge, E. , Toudou, A. , Verheggen, F. J. . "Insecticidal Effect of Jatropha curcas Oil on the Aphid Aphisfabae (Hemiptera: Aphididae) and on the Main Insect Pests Associated with Cowpeas (Vigna unguiculata) in Niger." Tropicultura
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10. Haghi, F. M. , Nikookar, H. , Hajati, H. , Harati, M. R. , Shafaroudi, M. , Yazdani-Charati, J. , Ahanjan, M. . "Evaluation of bacterial infection andantibiotic susceptibility of the bacteria isolated from cockroaches ineducational hospitals of Mazandaran University of Medical Sciences" Bulletin of Environment, Pharmacology and Life Sciences
3(5): 25-28, 2014. Retrieved from: http://bepls.com/spl_v_2014/6.pdf
12. Lateef, F. A. , Daudu, S. O. , Jere, P. , Yusuf, D. . "Insecticidal effect ofJatropha curcas Oil Phorbol Esters on the nymph, adult cockroaches andtermites" Journal of Applied Sciences and Engineering Research
3(2): 2014. Retrieved from: http://doi: 10.6088/ijaser:030200021
20. Ratnadass, A. , Wink, M. . "The Phorbol Ester Fraction from Jatrophacurcas Seed Oil: Potential and Limits for Crop Protection against Insect Pests" International Journal of Molecular Sciences
13(12): 16157–1617, 2012. Retrieved from: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3546684/
23. Wilson, K. , Maloney, K. , Zulu, D. , Mutamba, E. , Vermeylen, S. . "Can the biofuel crop, Jatropha curcas, be used as a locally-grown botanical pesticide? A lab and Field Study in Zambia" Proceedings of the First International Conference on Pesticidal Plants. 1., 2013. . Retrieved from: http://eprints.lancs.ac.uk/67372/1/Wilson_et_al_2013_ICPP_Proceedings_Vol_1_2013.pdf