Comparative Efficacy of Plant Extracts with Synthetic against Insect Pests of Okra (Abelmoschus esculentus L. Monech)

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Abstract:

A field study was carried out during the two cropping seasons of okra to investigate the efficacy of plant extracts and synthetic insecticides applied singly and synergistic effect of botanicals with the synthetic insecticide on some insect pests of okra. Plots were arranged in a Randomized Complete Block Design (RCBD), with three replications. Three insect pests of okra (Podagrica uniformis, Podagrica sjostedti and Zenocerous variegatus) were observed on the field. Cypermethrin applied singly and Cypermethrin combined with plant extracts effectively controlled observed insect pests, followed by lone application of plant extracts (L camara, T. vogelii and Z. officinales plant extracts at 1st and 2nd season. Okra yield revealed that both plant extract and Cypermethrin combined with plant extract were not significantly different from one another at first season and at second season Cypermethrin combined with plant extracts performed better than Cypermethrin applied singly. This study indicates that the studied plant extracts can be good synergist for Cypermethrin in controlling field pest of okra.

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[1] Adebayo T. A. (2003). Efficacy of mixture formulations of synthesis and botanical insecticides in the control of insect pests of okra and cowpea. Ph.D. Thesis submitted to Ladoke Akintola University of Technology, Ogbomoso, Nigeria.

Google Scholar

[2] Adebayo T. A., J. I. Olaifa, Science focus 7 (2004) 45-52.

Google Scholar

[3] Amuji C. F., Echezona B. C., Dialoke S. A., Journal of Agriculture and Veterinary Sciences 4 (2012) 45-52.

Google Scholar

[4] Babarinde S. A., Ogunkeyede A. F., Journal of Ultra scientist of Physical Sciences 20(2) (2008) 411.

Google Scholar

[5] FAO. The state of food and agriculture (Food and Agriculture Organization of the United Nations. 2006).

Google Scholar

[6] Folorunso O. O., Ojeniyi O. S., Federal University of Technology Akure Nigeria Asset series 3(4) (2003) 65-53.

Google Scholar

[7] Hill D. S., Waller J. M., (1988). Pests and Diseases of Tropical Crops, Logman, New York, p.414.

Google Scholar

[8] Fasunwon B. T., Banjo A. D., Research Journal of Agriculture and Biological Sciences 6 (2010) 283-288.

Google Scholar

[9] Gomez K. A., Gomez A. A. (1984). Statistical procedures for Agricultural Research, 2nd Edn., John Willy and Sons, New York, pp.18-192.

Google Scholar

[10] Miller J. R., Stricklder K. L. (1984). Finding and accepting host plants. In chemical ecology of insects Ed. Bell, W.J and Carde, R.T. Sinauer Associates Inc. pp.127-150.

Google Scholar

[11] Masood Khan M. A., Jagadishwar Reddy D., Venkateshwar Rao S., Pestology 26(6) (2001) 18-23.

Google Scholar

[12] Randhawa G. S. (1974). Horticulture; Importance of pest control. Pesticides Annual, pp.85-87

Google Scholar

[13] Srinivas P. S., V. P. S. Panwar, Pesticide Research Journal 15 (2003) 131-133.

Google Scholar

[14] Schippers R. R. (2000). African Indigenous Vegetables: An overview of the cultivated species. Chathan, UK: Natural Resources Institute/ACPEU Technical Centre for Agricultural And Rural Cooperation, 103-113. ( Received 28 June 2014; accepted 05 July 2014 )

Google Scholar