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Academic Research Journal of
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Academic Research Journal of Agricultural Science and Research Vol. 6(5), pp. 299-304. June, 2018. ISSN: 2360-7874 DOI: 10.14662/ARJASRD2018.046 Full Length Research Effect of Tobacco Concentration (Tobaccumrestica) to Protect Cabbage Aphid (Brevicornyebrassicae) on Cabbage crop (brassica oleracea)
Kassahun Yimenu
Debremarkos University Burie campus, Burie, Ethiopia. Email: kassahunyimenu41@gmail.com
Accepted 21 June 2018
The study was carried out on the effectiveness of tobacco plant leaf extract and tested at various concentrations on three cabbage varieties and compare with the chemical insecticides (diaznone) to manage cabbage aphid on cabbage varieties. The experiment was conducted on farmer field under irrigation and the crude extract of tobacco leave were extracted with distil water and five treatment were tested:2.5g, 5g, 7.5g, crude leaf extracted, diaznone 60%EC and untreated control. The varieties were Thomas, Copenhagen and local cabbage. Split plot design was used with three replication that put varieties on the main plot and tobacco extract concentration on the sub- plot. Application of the treatment nicotine and diaznone 60% was done following the established economic threshold level (ETL). The result showed that crude extract nicotine concentration significantly affected aphid numbers. There was also interaction between variety and nicotine concentration. Cabbage variety of Thomas was the best of all varieties considered in the study and crude extracted nicotine 7.5g gave the best result that it may be taken as preliminary recommendation and more than one spray may be advised because the potency of the botanical decline with time.
Keywords: Botanical: Nicotine concentration: Diaznone 60% EC: Variety.
How to cite this article: Kassahun Yimenu (2018). Effect of Tobacco Concentration (Tobaccumrestica) to Protect Cabbage Aphid (Brevicornyebrassicae) on Cabbage crop (brassica oleracea). Acad. Res. J. Agri. Sci. Res. 6(5): 299-304
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