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Academic Research Journal of
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Academic Research Journal of Agricultural Science and Research Vol. 5(4), pp. 291-308. July, 2017. ISSN: 2360-7874 DOI: 10.14662/ARJASR2017.028 Full Length Research Evaluation of Botanical Insecticides for the Management of Potato Tuber Moth, Phthorimaea operculella (Zeller) (Lepidoptera: Gelechiidae) Under Laboratory Condition
Yimame Kidist Tefera
Department of Crop Protection, Holleta Agriculture Research Center, Addis Ababa, Ethiopia. E-mail: kidist.teferra@yahoo.com
Accepted 15 May 2017
Potato has high yield potential, nutritional quality and a short growing period in Ethiopia. Phthorimea operculella is major production constraint. The objective of this study was to evaluate Pyrethrum (Chrysanthemum cinerariafolium (Anonymous)), Birbera, (Millettia ferruginea (Hochst)) and Neem oil, (Azadirachta indica (A. Juss)) against P. operculella. Three sets of experiments were conducted at Holetta Agricultural Research Center under laboratory condition in Ethiopia. Treatments were birbera seed, pyrethrum flower, and combination of birbera seed and pyrethrum flower powder, neem oil and as control water. The data percent damage of leaf and tuber, dead larvae, number of egg laid, emerged adult, number of fecal material, active and non-terminated glary were collected. Analysis made using SAS software. Experiment1:- 25ml of solution spraying on the foliage through dispenser sprayer, after one hour and fifty minutes, ten larvae were released per pot. As a result there was no significant difference between botanicals, but Pyrethrum was a good killer of larvae (86.66%) next to the combination of birbera and pyrethrum (83.33%). In experiment 2, five tubers were dipped for one hour and fifty minutes, taken out and air dried for one hour, tubers received the same treatment put with enough space between tubers into a transparent plastic cage and 25 larvae released per cage. There was significance difference between birbera and the remains. In birbera, least recorded of fecal materials (F4, 10 at 0.05= 12.73, P <0.0006), active galleries (F4, 10 at 0.05= 11.07, P< 0.0011), and high larval mortality (F4, 10 at 0.05=18.47, P <0.0001). In experiment 3; similar procedure to experiment 2, two pairs of adults were released on treated tubers. There was significance difference between botanicals in number of eggs laid (F, 10 at 0.05=4.5, p<0.024, hatched eggs (F4, 10 at 0.05 =3.44, p<0.051). Millettia ferruginea (Hochst) either alone or mixe with pyrethrum gave the best control of P. operculella.
Key words: Botanical, Potato, Birbera, Pyrethrum, Neem, Phthorimea. operculella.
How to cite this article: Tefera YK (2017). Evaluation of Botanical Insecticides for the Management of Potato Tuber Moth, Phthorimaea operculella (Zeller) (Lepidoptera: Gelechiidae) Under Laboratory Condition. Acad. Res. J. Agri. Sci. Res. 5(4): 291-308
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