N. Venugopala Rao ¹, T. Ramesh Babu ¹

Affiliations
1 Department of Entomology, College of Agriculture, Acharya N. G Ranga Agricultural University, Hyderabad, 500 030, Andhra Pradesh, IN

Abstract

Studies on the efficacy of granulosis virus against sugarcane early shoot borer, Chilo infuscatellus Snellen indicated that the treatments granulosis virus at 10⁹ IBs/ml. granulosis virus at 10⁹ IBs/ml + endosulfan 0.07 per cent, granulosis virus at 10⁵ IBs/ml and granulosis virus at 10¹² IBs/ml, respectively were found highly effective in checking the pest and recorded more number of mill able canes, cane yield and juice sucrose.

Keywords

Chilo infuscatellus, Granulosis Virus, Sugarcane.

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Ch. V. Narasimha Rao ¹, N. Venugopala Rao ¹, B. Bhavani ¹

Affiliations
1 Department of Entomology, Regional Agricultural Research Station, Anakapalle, 531 001, Andhra Pradesh, IN

Abstract

Multiplication of Trichogramma chilonis Ishii and its host insect, Corcyra cephalonica (Stainton) was undertaken in the IPM laboratory. Regional Agricultural Research Station, Anakapalle since 1999. The activity was intensilied during 2003–04 with an objective to supply ‘Trichocards’ to sugarcane farmers for the control of sugarcane early shoot borer, Chilo infuscatellus Snellen. During the year 2004–05. about 130 million T. chilonis parasitoids were produced in the laboratory and supplied as Trichocards (6,500 Trichocards) to the farmers through Sugar factories. Impact of T. chilonis on early shoot borer in factory operational areas of M/s Sri Sarvaraya Sugars Ltd., Chelluru (AP) was studied. The results indicate that the T. chilonis released plots recorded less incidence (0.16%) of early shoot borer in sugarcane compared to the untreated plots (.3.33%). The T. chilonis released plots recorded a cane yield of 120.3 t/ha and 19.0 per cent juice sucrose.

Keywords

Chilo infuscatellus, Field Evaluation, Sugar Factory Operational Areas, Trichogramma chilonis.

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