Thumbnail Image

Chaudhary Charan Singh Haryana Agricultural University, Hisar

Chaudhary Charan Singh Haryana Agricultural University popularly known as HAU, is one of Asia's biggest agricultural universities, located at Hisar in the Indian state of Haryana. It is named after India's seventh Prime Minister, Chaudhary Charan Singh. It is a leader in agricultural research in India and contributed significantly to Green Revolution and White Revolution in India in the 1960s and 70s. It has a very large campus and has several research centres throughout the state. It won the Indian Council of Agricultural Research's Award for the Best Institute in 1997. HAU was initially a campus of Punjab Agricultural University, Ludhiana. After the formation of Haryana in 1966, it became an autonomous institution on February 2, 1970 through a Presidential Ordinance, later ratified as Haryana and Punjab Agricultural Universities Act, 1970, passed by the Lok Sabha on March 29, 1970. A. L. Fletcher, the first Vice-Chancellor of the university, was instrumental in its initial growth.

Browse

20071
Reset filters
Subject: Entomology × Author: Banvir Singh × Start date: 2007 × Type: Thesis ×
Reset filters

Search Results

Now showing 1 - 1 of 1
  • Thumbnail Image
    ThesisItemOpen Access
    Potential of white muscardine, Beauveria bassiana (Bals.) Vuillemin in controlling Helicoverpa armigera (Hubner) on cotton
    (CCSHAU, 2007) Banvir Singh; Saroj Jaipal
    Nine isolates Bb (PDBC), Bb 4468, Bb 5412, Bb 4521, Bb 5409 Bb 4810 and Bb 5411, Bb 5408, and Indore Biotech Ltd. (commercial preparation) of the entomopathogenic fungus, Beauveria bassiana (Bals.) vuill. were bioassayed against Helicoverpa armigera (Hub.) to select the most effective isolate for use in biological control programme. All the isolates were found pathogenic with larval mortality ranged from 43.3 to 78.3 per cent. The commercial preparation from Indore Biotech Ltd. was found to be the most effective one. Five different concentrations (1×1010, 1×109, 1×108, 1×107 and 1×106 conidia/ml) of this most virulent isolate were used against each of the five instars of H. armigera as to determine the pathogenicity of Beauveria bassiana. The per cent larval mortality was higher in all the five instars at higher concentrations. Higher mortality was observed in early instars compared to later instars. The efficacy of Beauveria bassiana against some other important insect pests of cotton namely Pectinophora gossypiella, Earias spp. Bemisia tabaci and Amrasca bigutulla showed the mortality levels of 35.53, 42.16, 48.8 and 17.7 per cent respectively. The compatibility of Beauveria bassiana (commercial preparation from Indore Biotech Ltd.) was evaluated with seven insecticide formulations in two different concentrations (FR-Average field recommendation and 0.5×FR). The active ingredients monochrotophos, imidacloprid and carbaryl were found to exhibit relatively higher compatibility (inhibiting the vegetative growth and sporulation less than 50 per cent) than endosulfan, triazophas quinalphos and alphamethrin which indicated some toxic effects even at half of the average recommended dose. The results of the study point out to a good potential of Beauveria bassiana in the integrated pest management of cotton pest complex.