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Journal of Biological Sciences

Year: 2001 | Volume: 1 | Issue: 11 | Page No.: 1034-1039
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ABSTRACT

In a study, dust of deltamethrin @ 2 ppm and 3 ppm (T8), neem oil (T3), pithraj oil (T7), soybean oil (T1), sesame oil (T4) and jute oil @ 15 m/kg grain (T5), applied to kenaf seeds were fully effective up to 3, 3, 3, 2, 2 and 2 months respectively against adults of Z. subfasciatus Boheman. While castor oil less effective. (T1), (T3), (T4), (T5), (T6) and (T7) caused effective reduction in oviposition up to 2 months and (T8) caused effective up to 3 months. The higher doses of plant oils caused more then 70% egg mortality and reduced adult emergence significantly to prevented further infestation but the efficacy of lower doses deteriorated at later stages of sampling. Finally in another trial, each 500 g kenaf seeds of which each 5 % contained separately each of the four stages of Z. subfasciatus and also containing 5 pairs of adults, was treated separately with each of the above 8 treatments (only highest doses of T1 to T8) and was stored in sealed polythene bags. T1, T2, T3, T4, T5, T6 and T7 offered 86.85 , 81.40, 91.36, 84.34, 86.77, 84.70 and 83.69% grain protection respectively as against 87.54% infestation in the control experiment during 4 months of storage. The germination ability of seeds was not affected by any treatment.
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How to cite this article

Ahsanul Haque, A. K. M. Faruquzzam, Hasina Banu, N. Islam, Md. Abdul Alim and Aleya Nasreen, 2001. Pesticidal Efficacy of Some Indigenous Plant Oils Against the Mexican Bean Weevil, Zabrotes subfasciatus. Boheman. (Coleoptera: Bruchidae). Journal of Biological Sciences, 1: 1034-1039.

DOI: 10.3923/jbs.2001.1034.1039

URL: https://scialert.net/abstract/?doi=jbs.2001.1034.1039

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