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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.

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Subject: Entomology × Author: Gouda, Suresh × Start date: 1991 ×
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    ThesisItemOpen Access
    Evaluation of local isolates of entomopathogenic nematodes for the management of spodoptera litura (FAB.) and plutella xylostella L.
    (Chaudhary Charan Singh Haryana Agricultural University;Hisar, 2009) Gouda, Suresh; Rohilla, H. R.
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    ThesisItemOpen Access
    Evaluation of local isolates of entomopathogenic nematodes for the management of spodoptera litura (Fab.) and plutella xylostella L
    (CCSHAU, 2009) Gouda, Suresh; Rohilla, H. R.
    The present investigations were undertaken for the management of Spodoptera litura (Fab.) and Plutella xylostella L. by indigenous isolates of entomopathogenic nematodes (EPNs) under in vitro and screen-house conditions on cabbage. Fifty samples collected from vegetable fields in and around Hisar and Bhiwani, yielded three EPN isolates. These were identified as Steinernema abbasi (Isolate SU-2), S. abbasi (SU-3), Steinernema sp. (SU-1). These three EPN isolates along with Heterorhabditis indica (procured) were tested against major insect pests such as S. litura, P. xylostella, Achroia grisella, Earias vittella, Corcyra cephalonica, Helicoverpa armigera and Galleria mellonella for host range studies. All the isolates were lethal to insect pests exposed but pathogenicity varied among them. In pathogenicity studies using filter paper and sand barrier methods on S. litura and P. xylostella, the larval mortality increased with EPN dose and time of exposure. Among isolates, S abbasi (SU-3) proved best in filter paper as well as sand barrier methods against both test insects. In sand barrier method, larval mortality was more even at lower doses of EPNs. Temperature had a positive effect on larval mortality by EPN isolates. H. indica was most effective and caused 96.7 per cent larval mortality in S. litura and 96.3 per cent in P. xylostella. In screen-house studies, involving foliar spray of EPNs on cabbage, the larval mortality started after 48 h and it was highest by S. abassi (Su-2) at 72 h. In general, yield of infective juveniles of EPNs in all the experiments increased with time, dose and temperature.