Evaluation of the Efficacy of Crude Extracts of Tick Berry Lantana camara and Mexican Marigold Tagetes manuta Against Cabbage Aphids Brevicoryne brassicae
The efficacy of two plant extracts; Lantana camara, Tagetes manuta and a combination of Lanatana camara and Tagetes manuta applied to the cabbage plants at differeent concentrations against cabbage aphids were tested at St. Mary’s College Rushoroza Demonstration farm, Kabale district in 2015. The purpose of the study was to evaluate the efficacy of selected botanical plants’ crude extracts against the cabbage aphid Brevicoryne brassicae L. The specific objectives of the study were to compare the aphid populations on cabbage plants sprayed with Lantana camara, Tagetes manuta extracts and their combination, to determine the effective concentration of Lantana camara, Tagetes manuta and their combination that could protect the crop against cabbage aphids and to determine the yield of cabbage under different treatments of Lantana camara, Tagetes manuta and their combination on aphids. A field experiment was laid in a Randomized Complete Block Design (RCBD) with four blocks, three treatments replicated four times and a control experiment. Each experimental plot was 3 M by 2.5 M (7.5 M2 area) per plot and separated by 0.9 m between plots to avoid interplot and interblock interference. Data collected were aphid infestations (adults and nymphs) per three leaves, reduction in aphid populations after application of sprays, and percentage marketable yield. Data were subjected to one way Analysis of Variance (ANOVA) in Genstat software (eleventh edition) programme to compare the aphid population means in treated groups and untreated groups of cabbage. The plant extracts treatments of Lantana camara, Tagetes manuta and their combination on cabbage plants significantly reduced the number of aphids than on the untreated plants during the trial seasons.
The populations of aphids were not significantly different (p>0.05) at 5% and 10% concentrations between Lantana camara, Tagetes manuta, their combination, and the control experiment but showed significant difference (P<0.05) for 15% and 20% concentrations and the control experiment due to their high dosage rates. All the treatments at higher concentrations showed protection of cabbage against the aphids. The highest percentage aphid reduction was given by lantana camara extract at 20% concentration. A combination of Lantana camara and Tagetes manuta and Tagetes manuta at 20% concentration were also found effective. The cabbage plots sprayed with a 20% concentration of Lantana camara were found to have the biggest mean weight and percentage of marketable yield. It was concluded that the extracts of Lantana camara, Tagetes manuta and their combination had both pesticide and repellent roles in the control of cabbage aphids and therefore could be good insecticidal options for Integrated Pest Management Programmes in the control of cabbage aphids. It was therefore recommended that pending further research, these extracts could be used in pest management to minimize environmental problems resulting from use of synthetic pesticides.
. Thompson, H. C. & KELLY, W. C 1957. Vegetable crops. Fifth edition, Mcgraw-Hill. Bk Co. New York p. 484 -485.
. Talaker ,W. S. 2000. Chinese cabbage Proceedings of the first international symposium on Chinese Cabbge AVRDC Shanhua, Taiwan
. Norman, J. C. (1992). Tropical Vegetable Crops. In: Elms Court Ilfracombe ,Stockwell, H. (Ed) Devon Publishers, U.K.
. Opfer, P. Mcgmath, D. (2013). Oregon vegetables, cabbage aphid and green peach aphid. Department of Horticulture. Oregon State University, Corvallis, OR. (2 October 2013)
. Griffin R.P., Williamson, J. (2012). Cabbage, Broccoli & Other Cole Crop Insect Pests HGIC 2203, Home& Garden Information Center. Clemson Cooperative Extension. Clemson University, Clemson, SC. (2 October 2013
. Iqbal M. F., U. Maqbool, M. R. Asi and S. Aslam (2007). Determination of Pesticide residues in brinjal fruit at supervised trial. J. Anim. Plant Sci. 17(1-2):21-23.
. Gerhandson, B., 2002. Biological substitutes for pesticides. Trend. Biotechnol., 20(8): 338-343.
. Norris , R.F, CasweL-chenep, Kogan, J.D (2003). Concepts in Integrated Pest Management. Prentice-Hall of India, New Delphi. pp 586.
. Iqbal M. F., U. Maqbool, I. Perveez, M. Farooq and M. R. Asi (2009). Monitoring of insecticide residues in brinjal collected from market of Noshera Virkan, Pakistan. J. Anim. Plant Sci.19(2):90-93.
. Williamson, S., A. Ball & JULES, P. 2008. Trends in pesticide use and drivers for safer pest management in four African countries. Crop Prot., 27: 1327-1334.
. Lu C, Schenck FJ, Pearson MA, Wong JW (2010). Assessing children's dietary pesticide exposure: direct measurement of pesticide residues in 24-hr duplicate food samples. Environ. Health Persp. 118: 1625-1630.
. Łozowicka, B, Jankowska, M, Kaczyński, P. (2012). Pesticide residues in Brassica vegetables and exposure assessment of consumers. Food Control, 25: 561-575.
. Kareru, P., Kipkorir, Z. R., & Wamaitha, M.E, 2013. Use of Botanicals and Safer Insecticides Designed in Controlling Insects: The African Case
. Isman M.B. (2005). Botanical insecticides, deterrents, and repellents in modern agriculture and an increasingly regulated world. Annual Review of Entomology 51:45-66.
. Arshad, A., Parvez, Q. R., & Farmanur, R. K., 2009. Bio-efficacy of some plant leaf extracts against mustard aphid, lipaphis erysimi kalt on indian mustard, brassica juncea
. Kabale district local government , (2014). Report prepared with support from Uganda Bureau of Statistics.
. BarbarA, A. A. 2010. Efficacy of ethanolic extract of thevetia peruviana (pers.) K. schum. (milk bush) root in the control of major insect pests of cowpea.
. MwinE J. ET AL., 2011. Ethnobotanical survey of pesticidal plants used in South Uganda: Case study of Masaka district; Journal of Medicinal Plants Research 5(7) 1155- 163, 2011)
. Buss, E. A. & Park-Brown, S. G. 2002. Natural Products for Insect Pest Management. http://edis.ifas.ufl.edu/BODY_IN197. Accessed 20 April 2003
. Shahid, M., 2003. Principles of insect pest management. Pub. No. 19(233)/ Mono/HEC/96., pp. 183.
. Al-dosary, M.M., 2007. Sensory receptors and behaviour of the Red pal Weevil Rhynchophorus ferrugineus (Oliv.) (Colioptera: Curculionidae) with reference to attractants, repellents and control. Ph.D. Thesis. Riyadh Girls College of Education Scientific Section, Department of Zoology, Riyadh. 269pp.
. Duke,1. A. 1982. Medicinal plams o/the Bible, 1st ed. Conch Publications. Ne' York.
. Begum, S., Wahab, A., Siddiqui, B. S., & Qamar, F. 2000. Nematicidal Constituents of the aerial parts of Lantana camara. Journal of Natural Products, 63, 765-767. http://dx.doi.org/10.1021/np9903548
. Mekuaninte, B, Yemataw A, Alemsege, D. T, Nagappan, R. (2011). Efficacy of Melia azadarach and Mentha piperataplant extracts against cabbage aphid, Brevicoryne brassicae (Homoptera: Aphididae). World Appl. Sci. J., 12: 2150-2154.
. Mamun, M.S.A. & Ahmed, M. 2011. Studies on indigenous plant extract against major pests of tea. Unpublished research work of BTRI.
. Baidoo PK, Adam J.I, (2012). The effects of extracts of Lantana camara (L.) and Azadirachta indica (A. Juss) on the population dynamics of Plutella xylostella, Brevicoryne brassicae and Hellula undalis on cabbage. Sustainable Agric. Res., 1: 229-234.
. Koon-Hui W., Cerruti, R H., & Antoon P. Protecting Crops from Nematode Pests: Using Marigold as an Alternative to Chemical Nematicides. , Department of Plant and Environmental Protection Sciences, University of Hawai‘i at Mänoa. Department of Nematology, University of California, Riverside
. Chamorr, O, E. R., G. Ballerini, A. F. Sequeira, G. A. Velasc, O. M. S.ZalazaR. 2008. Chemical composition of essential oil from Tagetes minuta L. leaves and flowers. J. Argentine Chemical Soc. 96(1-2): 80- 86.
. Zig, L. V., Lasta C., Milica, K., & stanisl, A.V, T. 2010. Efficacy of three natural substances Against apple aphid (Aphis pomi De Geer, Aphididae, Homoptera) under laboratory conditions.
. Waceke J., 2007. Plant parasitic nematodes associated with cabbages in Kenya. Proceedings of the 8th African Crop Science Society Conference, 27 -31 October 2007, El Minia, Egypt, Pp. 1071-1074.
. Barbercheck , M.E.(2014).Biology and Management of Aphids in Organic Cucurbit Production Systems. Penn State University
- There are currently no refbacks.