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Acharya N G Ranga Agricultural University, Guntur

The Andhra Pradesh Agricultural University (APAU) was established on 12th June 1964 at Hyderabad. The University was formally inaugurated on 20th March 1965 by Late Shri. Lal Bahadur Shastri, the then Hon`ble Prime Minister of India. Another significant milestone was the inauguration of the building programme of the university by Late Smt. Indira Gandhi,the then Hon`ble Prime Minister of India on 23rd June 1966. The University was renamed as Acharya N. G. Ranga Agricultural University on 7th November 1996 in honour and memory of an outstanding parliamentarian Acharya Nayukulu Gogineni Ranga, who rendered remarkable selfless service for the cause of farmers and is regarded as an outstanding educationist, kisan leader and freedom fighter. HISTORICAL MILESTONE Acharya N. G. Ranga Agricultural University (ANGRAU) was established under the name of Andhra Pradesh Agricultural University (APAU) on the 12th of June 1964 through the APAU Act 1963. Later, it was renamed as Acharya N. G. Ranga Agricultural University on the 7th of November, 1996 in honour and memory of the noted Parliamentarian and Kisan Leader, Acharya N. G. Ranga. At the verge of completion of Golden Jubilee Year of the ANGRAU, it has given birth to a new State Agricultural University namely Prof. Jayashankar Telangana State Agricultural University with the bifurcation of the state of Andhra Pradesh as per the Andhra Pradesh Reorganization Act 2014. The ANGRAU at LAM, Guntur is serving the students and the farmers of 13 districts of new State of Andhra Pradesh with renewed interest and dedication. Genesis of ANGRAU in service of the farmers 1926: The Royal Commission emphasized the need for a strong research base for agricultural development in the country... 1949: The Radhakrishnan Commission (1949) on University Education led to the establishment of Rural Universities for the overall development of agriculture and rural life in the country... 1955: First Joint Indo-American Team studied the status and future needs of agricultural education in the country... 1960: Second Joint Indo-American Team (1960) headed by Dr. M. S. Randhawa, the then Vice-President of Indian Council of Agricultural Research recommended specifically the establishment of Farm Universities and spelt out the basic objectives of these Universities as Institutional Autonomy, inclusion of Agriculture, Veterinary / Animal Husbandry and Home Science, Integration of Teaching, Research and Extension... 1963: The Andhra Pradesh Agricultural University (APAU) Act enacted... June 12th 1964: Andhra Pradesh Agricultural University (APAU) was established at Hyderabad with Shri. O. Pulla Reddi, I.C.S. (Retired) was the first founder Vice-Chancellor of the University... June 1964: Re-affilitation of Colleges of Agriculture and Veterinary Science, Hyderabad (estt. in 1961, affiliated to Osmania University), Agricultural College, Bapatla (estt. in 1945, affiliated to Andhra University), Sri Venkateswara Agricultural College, Tirupati and Andhra Veterinary College, Tirupati (estt. in 1961, affiliated to Sri Venkateswara University)... 20th March 1965: Formal inauguration of APAU by Late Shri. Lal Bahadur Shastri, the then Hon`ble Prime Minister of India... 1964-66: The report of the Second National Education Commission headed by Dr. D.S. Kothari, Chairman of the University Grants Commission stressed the need for establishing at least one Agricultural University in each Indian State... 23, June 1966: Inauguration of the Administrative building of the university by Late Smt. Indira Gandhi, the then Hon`ble Prime Minister of India... July, 1966: Transfer of 41 Agricultural Research Stations, functioning under the Department of Agriculture... May, 1967: Transfer of Four Research Stations of the Animal Husbandry Department... 7th November 1996: Renaming of University as Acharya N. G. Ranga Agricultural University in honour and memory of an outstanding parliamentarian Acharya Nayukulu Gogineni Ranga... 15th July 2005: Establishment of Sri Venkateswara Veterinary University (SVVU) bifurcating ANGRAU by Act 18 of 2005... 26th June 2007: Establishment of Andhra Pradesh Horticultural University (APHU) bifurcating ANGRAU by the Act 30 of 2007... 2nd June 2014 As per the Andhra Pradesh Reorganization Act 2014, ANGRAU is now... serving the students and the farmers of 13 districts of new State of Andhra Pradesh with renewed interest and dedication...

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Author: AMRUTHA VEENA, G × End date: 2019 × Start date: 2000 ×
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    ThesisItemOpen Access
    STUDIES ON ANTAGONISTIC POTENTIAL OF TRICHODERMA SPP AGAINST GROUNDNUT SOIL BORNE PATHOGENIC FUNGI
    (ACHARYA N G RANGA AGRICULTURAL UNIVERSITY, GUNTUR, 2019) AMRUTHA VEENA, G; PADMODAYA, BHASKARA
    Roving survey was carried out during Kharif 2014 in five districts of Andhra Pradesh for studying collar rot, root rot and stem rot disease incidence. Highest average collar rot incidence (23.00%) was observed in Yerraguntla mandal of Kadapa district, highest average stem rot incidence (19.50%) in Gangadhara Nellore mandal of Chittoor district and highest average root rot incidence (22.00%) in Kadiri mandal of Ananthapur district. Pathogens were isolated from the plants exhibiting typical symptoms of the disease, and pathogenecity test proved Koch postulates. In vitro efficacy of five fungicides viz., thiram, mancozeb, carbendazim, tebuconazole and thiram+vitavax were evaluated against three pathogens using poisoned food technique at five different concentrations. All the five fungicides were effective against A. niger at all the concentrations tested. Carbendazim was ineffective against S. rolfsii at 1000 ppm. Except thiram remaining four fungicides gave 100% inhibition against R. bataticola. A total of fifty Trichoderma isolates were isolated from rhizosphere region of healthy groundnut plants which were designated as Groundnut Rhizosphere Trichoderma (GT-1 to GT-50). When these isolates were screened against S. rolfsii, thirty isolates gave more than 50% inhibition, remaining twenty isolates overgrew over S. rolfsii. When these potential thirty isolates were tested against R.bataticola, Trichoderma isolate-34 (GT-34) showed xx maximum inhibition of growth of Rhizoctonia bataticola (69.44%) followed by Trichoderma isolate-28 (67.78%) and Trichoderma isolate-38 (63.88%). Against A.niger, Trichoderma isolate-28 showed highest inhibition (77.78%) followed by Trichoderma isolate-49 (77.22%) which were on par with each other. The five effective Trichoderma isolates (Trichoderma isolate-9, 28, 34, 38 and 49) showing antifungal activity against pathogens were further evaluated to identify the mechanism of antagonism. Trichoderma coiled around the mycelium of S. rolfsii and R.bataticola penetrated into the mycelium and lysed leading to disruption of cell contents. Volatile and nonvolatile metabolites of five Trichoderma isolates significantly inhibited the mycelial growth of the three pathogens. Among the five antagonists, Trichoderma isolate-9 showed highest inhibition. This isolate highly inhibited the growth of A. niger followed by R. bataticola and S. rolfsii. Least inhibition was shown by Trichoderma isolate-49. Biochemical characterization of potential Trichoderma isolates revealed that more chitinase was produced than β-1, 3 glucanase and cellulose. Uv irradiation was induced for five potential isolates to induce mutations. Five stable mutants were able to inhibit the mycelial growth of three pathogens significantly higher than the wild isolates. In vitro effect of five fungicides were evaluated against wild and mutant Trichoderma isolates. Mancozeb was compatible with both wild and mutant isolates. Remaining four fungicides completely inhibited the growth of Trichoderma isolates. Urea, SSP, MOP and Gypsum had no inhibitory effect against wild and mutant Trichoderma isolates. DAP, 19:19:19, 14:35:14 were relatively incompatible with wild isolate GT-9 at higher concentrations, while the compatibility increased with mutant Trcichoderma. Highest mycelial dry weight was obtained at 300C followed by 250C and 350C. At higher temperatures sporulation was scanty. Trichoderma isolates-9, 34, 38 and 49 were identified as Trichoderma asperellum and Trichoderma isolate-28 as Trichoderma hamatum using ITS primers. OPC-16 primer produced polymorphic band of size 512 bp which was developed as SCAR marker to differentiate wild and mutant Trichoderma isolates. The kharif, 2016 and 2018 field experiment results revealed that seed treatment+soil application (basal)+soil drenching of mutant Trichoderma+mancozeb seed treatment recorded highest germination percentage (91.67), lowest collar rot (3.09%), stem rot (2.74%), root rot incidence (5.49%), highest pod yield (1961.50 kg ha-1) and haulm yield (2573.50 kg ha-1).