S. Mohi-Ud-Din ¹, F. A. Zaki ¹, N. A. Munshi ², A. Jan ³, P. Sultan ³

Affiliations
1 Division of Entomology, S. K. University of Agricultural Sciences and Technology, Shalimar Campus, Srinagar, 191121, Jammu and Kashmir, IN
2 Division of Sericulture, SKUAST-K, Shalimar, Srinagar, IN
3 Regional Research Laboratory, Santnagar, Srinagar, IN

Abstract

The pathogenicity of nine fungi was tested in the laboratory against Holotrichia sp. Ail the fungi proved to be pathogenic at a spore concentration 1 × 10⁸ spore/ml to grub with varied mortality. Beaitveria bassiana (Local), B. bassiana (commercial), B. brongniartii and Metarhizium anisopliae were found to be the most effective. B. bassiana @ 1x10⁸ spore/ml concentration inflicted initial mortality on 6^th day (46.6%) and cent per cent mortality was observed on 12^th day. In B. brongniartii initial mortality started on 8^th day (33.33%) and cent per cent mortality occurred on 20^th day, while as in case of M. anisopliae mortality was initiated on 8^th day (30%) and highest mortality was observed on 20^th day (93.91%). In the field, all the three screened bioeontrol agents caused heavy mortality at the highest concentration of 1x10⁸ spore/ml. However, B. bassiana was found most effective as compared to the rest. In case of B. bassiana, the first mortality was observed on 10^th day (36.66%) and cent per cent mortality occurred on 20^th day, while in case of B. brongniartii and M. anisopliae the first mortality was observed on 10^th and 12^th day and complete mortality was observed on 22^nd and 24^th day, respectively.

Keywords

Beaitveria bassiana, Holotrichia sp., Indigenous Fungal Isolates.

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