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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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20162
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Subject: Plant Pathology × Author: TULASI, K × Start date: 2000 ×
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    ThesisItemOpen Access
    STUDIES ON POWDERY MILDEW (Erysiphe polygoni D C) OF URDBEAN [Vigna mungo (L.) Hepper] IN RELATION TO WEATHER, HOST PLANT RESISTANCE AND MANAGEMENT
    (Acharya N.G. Ranga Agricultural University, 2016) TULASI, K; MANOJ KUMAR, V
    Powdery mildew disease caused by Erysiphe polygoni D C is one of the serious constraints that afflict cultivation of blackgram in India and other countries. In view of the significance of the disease, investigation was carried out to study the severity of powdery mildew on urdbean (Vigna mungo (L.) Hepper) in relation to weather, host plant resistance and management. Observations were made on different aspects like incidence, severity (PDI), morphological characters and biochemical changes and growth and yield parameters. A roving survey was conducted during rabi 2015-16 in Guntur district of Andhra Pradesh. Disease incidence and severity were recorded in the surveyed villages of Tadikonda, Veticherukuru, Pedanandipadu and Kakumanu mandals of Guntur district. Incidence was ranged from of 13.69% (Pedanandipadu mandal) to 87.01% (Tadikonda mandal) and severity were ranged from 11.61% (Kakumanu mandal) to 88.08% (Tadikonda mandal), respectively. Symptoms first appeared on shaded lower leaves. These white, powdery colonies grew in size and cover both sides of the leaf, petioles and young stems. When disease progressed leaves became smaller and chlorotic with stunting, distortion and premature leaf fall due to infection of E. polygoni. The pathogen was observed to produce amphigenous dirty white hyaline mycelium and barrel shaped conidia measuring 1.089 μm × 0.7131 μm at 40X magnification. Correlation studies with weather parameters and crop age on powdery mildew disease severity revealed that significant positive correlation of disease was recorded with crop age (r=0.984) and maximum temperature (r=0.657). Regression analyses for per cent severity of diseases with weather factors revealed that maximum temperature and wind speed and minimum temperature would influence powdery mildew disease in urdbean up to 86.6 per cent. During kharif, out of 47 genotypes evaluated, KUP-1 was immune, two genotypes were highly resistant, and ten were moderately resistant to powdery mildew, whereas, twenty moderately susceptible and ten were susceptible and four highly susceptible. In rabi, out of eleven genotypes, two were highly resistant against powdery mildew disease, one moderately resistant, one moderately susceptible, other seven genotypes were highly susceptible. Among selected blackgram genotypes, significantly highest leaf thickness was observed in highly resistant genotypes KUP-34 (201.4 μm), KUP-40 (191.3 μm). Significantly lowest stomatal frequency was observed in highly resistant genotypes KUP-34 (88.64/mm2), KUP-40 (99.24/mm2). Higher trichome density was observed in highly resistant genotypes KUP-34 (62.33), KUP-40 (59.11). Significantly higher phenol content was observed in highly resistant genotypes KUP-34 (0.912 mg/100 mg) and KUP-40 (0.861 mg/100 mg) and one moderately resistant genotype KUP-12 (0.678 mg/100 mg). Highly susceptible genotype LBG-623 recorded the lowest total phenol content (0.299 mg/100 mg). Significantly lowest total sugars, reducing sugars and non reducing sugars were recorded in highly resistant genotypes KUP 34 and KUP 40. In field evaluation of different chemicals, two sprays of Myclobutanil @ 0.2 W.P (31.23%), Wettable sulphur @ 0.3 W.P (32.81%) were found superior as they recorded the lowest per cent disease index. Significant increase in shoot length, number of primary branches per plant, number of pods per plant, 100 seed weight, seed yield was recorded with Myclobutanil spraying at 35 and 45 DAS followed by Wettable sulphur. Highest benefit cost ratio was observed in Wettable sulphur (1.82) followed by Myclobutanil (1.17).
  • Thumbnail Image
    ThesisItemOpen Access
    STUDIES ON POWDERY MILDEW (Erysiphe polygoni D C) OF URDBEAN [Vigna mungo (L.) Hepper] IN RELATION TO WEATHER, HOST PLANT RESISTANCE AND MANAGEMENT
    (Acharya N.G. Ranga Agricultural University, 2016) TULASI, K; MANOJ KUMAR, V
    Powdery mildew disease caused by Erysiphe polygoni D C is one of the serious constraints that afflict cultivation of blackgram in India and other countries. In view of the significance of the disease, investigation was carried out to study the severity of powdery mildew on urdbean (Vigna mungo (L.) Hepper) in relation to weather, host plant resistance and management. Observations were made on different aspects like incidence, severity (PDI), morphological characters and biochemical changes and growth and yield parameters. A roving survey was conducted during rabi 2015-16 in Guntur district of Andhra Pradesh. Disease incidence and severity were recorded in the surveyed villages of Tadikonda, Veticherukuru, Pedanandipadu and Kakumanu mandals of Guntur district. Incidence was ranged from of 13.69% (Pedanandipadu mandal) to 87.01% (Tadikonda mandal) and severity were ranged from 11.61% (Kakumanu mandal) to 88.08% (Tadikonda mandal), respectively. Symptoms first appeared on shaded lower leaves. These white, powdery colonies grew in size and cover both sides of the leaf, petioles and young stems. When disease progressed leaves became smaller and chlorotic with stunting, distortion and premature leaf fall due to infection of E. polygoni. The pathogen was observed to produce amphigenous dirty white hyaline mycelium and barrel shaped conidia measuring 1.089 μm × 0.7131 μm at 40X magnification. Correlation studies with weather parameters and crop age on powdery mildew disease severity revealed that significant positive correlation of disease was recorded with crop age (r=0.984) and maximum temperature (r=0.657). Regression analyses for per cent severity of diseases with weather factors revealed that maximum temperature and wind speed and minimum temperature would influence powdery mildew disease in urdbean up to 86.6 per cent. During kharif, out of 47 genotypes evaluated, KUP-1 was immune, two genotypes were highly resistant, and ten were moderately resistant to powdery mildew, whereas, twenty moderately susceptible and ten were susceptible and four highly susceptible. In rabi, out of eleven genotypes, two were highly resistant against powdery mildew disease, one moderately resistant, one moderately susceptible, other seven genotypes were highly susceptible. Among selected blackgram genotypes, significantly highest leaf thickness was observed in highly resistant genotypes KUP-34 (201.4 μm), KUP-40 (191.3 μm). Significantly lowest stomatal frequency was observed in highly resistant genotypes KUP-34 (88.64/mm2), KUP-40 (99.24/mm2). Higher trichome density was observed in highly resistant genotypes KUP-34 (62.33), KUP-40 (59.11). Significantly higher phenol content was observed in highly resistant genotypes KUP-34 (0.912 mg/100 mg) and KUP-40 (0.861 mg/100 mg) and one moderately resistant genotype KUP-12 (0.678 mg/100 mg). Highly susceptible genotype LBG-623 recorded the lowest total phenol content (0.299 mg/100 mg). Significantly lowest total sugars, reducing sugars and non reducing sugars were recorded in highly resistant genotypes KUP 34 and KUP 40. In field evaluation of different chemicals, two sprays of Myclobutanil @ 0.2 W.P (31.23%), Wettable sulphur @ 0.3 W.P (32.81%) were found superior as they recorded the lowest per cent disease index. Significant increase in shoot length, number of primary branches per plant, number of pods per plant, 100 seed weight, seed yield was recorded with Myclobutanil spraying at 35 and 45 DAS followed by Wettable sulphur. Highest benefit cost ratio was observed in Wettable sulphur (1.82) followed by Myclobutanil (1.17).