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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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2017 - 201912020 - 20221
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Subject: Plant Pathology × Author: GUNASRI, REDDI × Start date: 2000 ×
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    ThesisItemOpen Access
    CHARACTERIZATION OF MAIZE BANDED LEAF AND SHEATH BLIGHT PATHOGEN AND ITS MANAGEMENT
    (guntur, 2022-08-11) GUNASRI, REDDI; PRASANNA KUMARI, V.
    In the present investigation on “Characterization of Maize Banded Leaf and Sheath Blight Pathogen and its Management”, survey during rabi, 2018-19 in five major maize growing districts of A.P. revealed BLSB to an extent of 61.35% (West Godavari), 58.05% (East Godavari), 46.87% (Vizianagaram), 25.85% (Guntur) and 23.02 % (Kurnool). In vitro studies on cultural and morphological variability of 18 R. solani f. sp. sasakii isolates obtained from maize growing areas of A.P. indicated that colony colour was initially white later varied to light yellowish brown (6/3-2.5 Y), light brown (6/3-7.5 YR), pale brown (6/3 10YR) and brownish yellow (6/6 10YR). Of the isolates RWGB-01, REGP-05, REGJ-07, REGK-08, RVZM-10, RVZB-11 were found superior in their radial growth (9.00 cm) with high growth rate (0.75 mm h-1). Four different growth patterns with profuse aerial mycelium were observed. Hyphal width among isolates ranged from 6.69 to 8.66 μm (RWGB-01). The sclerotia size varied from 0.93 (RKLC-18) to 1.86 mm (RWGB-01 and RWGN-03) and sclerotia weight ranged from 5.97 (RKLR-17) to 61.32 mg (RGUG-13). Time taken to form sclerotia varied from five to eight days with wide variation in colour. Three different types of sclerotial distribution were observed, i.e., aerial, surface and, surface and aerial. Five Different types of patterns of arrangement of sclerotial bodies in culture plates were observed. Sclerotia number ranged from 10 to 122. Two types of sclerotia textures i.e., rough and smooth were observed. xvii The incubation period varied from 72 to 120 h. Among all the isolates, REGP-05 isolate was found highly virulent with low incubation period (72 h) resulting in large lesions (22.43 cm) and highest PDI (49.33%). Molecular variability was determined for the 18 test isolates using four RAPD and two ISSR primers which resulted in a total of 108 bands with polymorphism having band size ranged from 300 to 3000 bp. Dendrogram obtained had two clusters (I and II), cluster I consisted of single isolate (RGUG-13) and cluster II consisted of remaining 17 isolates. Cluster I had 66% similarity with cluster II. The average PIC value (0.27) was similar to both the primers whereas average Rp value was high for ISSR primers (6.21) when compared to RAPD primers (5.92). Isozyme variability in esterase and peroxidase enzymes was determined for the R. solani f. sp. sasakii isolates. A total of 18 bands with Rm values ranging from 0.24 to 0.54 were obtained. Dendrogram obtained had three clusters (A, B and C). Cluster A consisting of two isolates RWGN-03 and RWGD-04 while cluster B consisting of four isolates (RWGK-02, REGJ-07, REGK-08 and RVZS-09). Cluster C was comprised of remaining 12 isolates. Cluster A was 60% similar to cluster B, C and cluster B was 75% similar to cluster C. Under in vitro conditions Karanj leaf extract @ 15% resulted in the maximum mycelial inhibition of pathogen (3.18 cm) followed by Karanj leaf extract @ 10% (4.12 cm) and Nerium leaf extract @ 5% (4.50 cm). Among all the tested cow based natural products (CBNP), Panchagavya was significantly superior in inhibiting the radial growth of the pathogen at all the concentrations, i.e., 5%, 10%, 15% (0.00 cm) and was on par with the cow urine @ 10, 15% (0.00 cm) and cow dung + cow urine @ 15% (0.00 cm). Pooled data analysis of both the seasons (rabi 2018-19 and 2019-20) revealed efficacy of Karanj leaf extract @ 15%+Panchagavya @ 5% in controlling the disease even two weeks after second spray (71 DAS) with low PDI (35.77%) and minimum AUDPC (670.60) compared to unsprayed check (1137.16). Treatment Karanj leaf extract @ 15%+Panchagavya @ 5% recoded maximum number of cobs/m2 (9), test weight (22.83 g), yield (7469.14 Kg ha-1) and B: C ratio (2.55) as against the control (1.43).
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    ThesisItemOpen Access
    STUDIES ON THE MANAGEMENT OF FUNGAL FOLIAR DISEASES OF BLACKGRAM [VIGNA MUNGO (L.) HEPPER] IN GUNTUR DISTRICT OF ANDHRA PRADESH
    (Acharya N.G. Ranga Agricultural University, 2017) GUNASRI, REDDI; MANOJ KUMAR, V
    Investigations on “Studies on the management of fungal foliar diseases of blackgram [Vigna mungo (L.) Hepper] in Guntur district of Andhra Pradesh” was carried out in the Agricultural College Farm, Bapatla, Guntur district, Andhra Pradesh during rabi, 2016-17. A survey was conducted during rabi, 2016-17 in Guntur district of Andhra Pradesh to record the occurrence and severity of fungal foliar diseases at 30-35, 40-45 and 50-55 DAS. Two mandals were selected based on the preceding year blackgram cultivation statistics, in each mandal two villages and in each village two fields were surveyed. There was no record of any fungal foliar disease at 30-35 DAS. At 45-50 DAS, overall mean PDI of Corynespora leaf spot (Corynespora cassiicola) PDI was 31.89% and at 50-55 DAS it was 67.27%. The overall mean PDI of Cercospora leaf spot (Cercospora canescens) at 40-45 DAS was 28.88% and at 50-55 DAS it was 53.70%. The overall mean PDI of powdery mildew (Erysiphe polygoni) at 40-45 DAS was 22.85% and 63.22% at 50-55 DAS. During rabi, 2016-17, Corynespora leaf spot PDI of six genotypes viz., LBG 752 (r= -0.635), LBG 709 (r=-0.656), KU-15-6 (r= -0.637), LBG 20 (r= -0.640), LBG 791 (r= -0. 648) and LBG 685 (r= -0.654) showed a significant negative correlation with mean minimum temperature. Cercospora leaf spot PDI of three genotypes viz., LBG 752 (r= -0.642), LBG 709 (r=-0.660) and T9 (r= -0.636) showed a significant negative correlation with mean minimum temperature. Powdery mildew PDI of six genotyes LBG 752 (r= -0.654), KU-15-3 (r=-0.655), LBG 709 (r=-0.664), KU-15-6 (r= -0.678), LBG 791 (r= -0.650) and PU 31 (r= -0.633) showed significant negative correlation with minimum temperature. Regression analysis for PDI of Corynespora leaf spot, Cercospora leaf spot and powdery mildew revealed that maximum temperature and minimum temperature influenced the development of the disease in all the genotypes. Out of 16 genotypes (including check) evaluated for their reaction to fungal foliar diseases, two genotypes T9 and LBG 645 were moderately resistant to Corynespora leaf spot. The genotype LBG 645 was rated as moderately resistant to Cercospora leaf spot. Ten genotypes viz., LBG 20, LBG 791, LBG 685, LBG 645, LBG 787, PU31, LBG 790, KU-15-13, LBG 792 and T9 were categorized as moderately resistant to powdery mildew. Studies on the management of fugal foliar diseases with fungicides have revealed that two sprays of Azoxystrobin 23 SC @ 0.05% has recorded significantly lowest severity of Corynespora leaf spot (53.52%). Carbendazim 50 WP @ 0.05% has significantly reduced the Cercospora leaf spot severity (33.75%). Trifloxystrobin 25% WG + Tebuconazole 50% WG @ 0.05% has absolutely controlled (0%) the powdery mildew. Highest seed yield (9.33 q ha-1 ), highest test weight (6.40 g), highest B:C ratio (1.72), lowest per cent seed discolouration and per cent shrivelled seed were recorded with Azoxystrobin 23 SC @ 0.05%.