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Journal of Entomology and Zoology Studies
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ISSN Print: 2349-6800 | ISSN Online: 2320-7078

Journal of Entomology and Zoology Studies

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2017, Vol. 5, Issue 3
Effect of carriers on the efficacy of Bacillus thuringiensis var. Kurstaki (hd-1) formulations

Dinesh Swami, Bishwajeet Paul and S K Dotasara

Effect of carriers on the efficacy of new wettable powder (WP) formulations of Bacillus thuringiensis var. kurstaki (HD-1) was evaluated at Division of Entomology, Indian Agricultural Research Institute, New Delhi during 2006-2008. Sixteen wettable powder (WP) formulations of B. thuringiensis var. kurstaki (HD-1) were developed using eight carriers namely barium sulphate, bentonite, dolomite, fuller’s earth, kaoline, talc, precipitate of silica and pyrophyllite. Six physico-chemical properties i.e. bulk density, carrier reaction (pH), cation exchange capacity, moisture content, sorptivity and specific surface area of the carriers were studied. Among the carrier tested, precipitate of silica was found to be the most suitable for preparation of WP formulation of HD-1. Efficacy of new formulations was evaluated. LC50 values of formulation-7 (0.018%) and formulation-15 (0.015%) were highly effective against III instar larvae of H. armigera (Hubner).
Pages : 590-594 | 616 Views | 11 Downloads
How to cite this article:
Dinesh Swami, Bishwajeet Paul, S K Dotasara. Effect of carriers on the efficacy of Bacillus thuringiensis var. Kurstaki (hd-1) formulations. J Entomol Zool Stud 2017;5(3):590-594.
Journal of Entomology and Zoology Studies
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