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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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  • ThesisItemOpen Access
    Screening and characterization of Mesorhizobium ciceri isolates for antagonistic effect to Fusarium oxysporum f. sp. ciceri
    (CCSHAU, 2010) Suman; Yadav, A.S.
    Screening and characterization of Mesorhizobium ciceri isolates for antagonistic effect to Fusarium oxysporum f. sp. ciceriā€ was investigated on 207 isolates obtained from the nodules of chickpea plant. The growth of these 207 isolates was checked on YEMA Congo red medium. Out of 207 isolates, 117 were fast growing and 90 were slow growing rhizobia. These 207 isolates were screened for their anagonistic effect against Fusarium oxysporum. Out of 207 isolates, seven isolates were found to be antagonistic to F. oxysporum. Size of inhibition zone varied among the seven isolates from 5 mm to 15 mm. MC99 produced the largest inhibition zone. These seven isolates were further studied for antibiotic, siderophore, indole acetic acid (IAA) production and phosphate solubilization. None of the seven isolates was producing antibiotic. Out of these seven isolates, MC84, MC96, MC99 were producing siderophore and MC69, MC180, MC183 and MC190 were not producing siderophore. So, the mechanism of antagonism might be different in all these isolates. All the seven isolates were produing IAA, which varied among these isolates. The isolate MC99 was producing maximum indole acetic acid. None of the seven isolates was solubilizing tricalcium phosphate. In the present study, the isolate MC99 was found to be having maximum antagonistic activity against F. oxysporum, as it produced maximum zone of inhibition against this fungus. It had also the maximum amount of IAA and siderophore.