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Acharya N. G. Ranga Agricultural University, Guntur (AP)

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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20211
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Subject: Agricultural Microbiology × Author: VINOD BABU, s × Start date: 2017 × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    INFLUENCE OF ZINC AND SILICA SOLUBILIZING MICROORGANISMS ISOLATED FROM DIFFERENT SOURCES ON CROP GROWTH AND YIELD OF DIRECT SOWN RICE (Oryza sativa L.)
    (ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY, GUNTUR, 2021-12-21) VINOD BABU, s; VIJAYA GOPAL, A
    Rice (Oryza sativa L.) is one of the important staple food for more than 50 % of the world’s population providing major source of the food energy. Rice plays a crucial role in Indian agriculture contributing to 20-25 % of agricultural income. It contributes about 43% of the total food grain production and about 46 % of the total cereal production in India. Depending on water and labour paucity, farmers are altering rice establishment methods from transplanting to direct seeding in unpuddled soil as it is possible to save water and labour wages etc. In direct sown rice, zinc and silica deficiencies were observed in most of the rice growing areas of India posing a threat to the crop plant growth and yield. Keeping in view of future requirements and present needs this study was framed to develop bacterial inoculants for zinc and silica solubilisation in direct sown rice. A total of thirty two zinc solubilising bacterial inoculants and twenty eight silica solubilising bacterial inoculants were isolated from Kurnool district (Mandals of Atmakur, Kothapalle, Jupadu bungalow, Pamulapadu and Velugodu), Prakasam district (Mandals of Tripuranthakam, Yerragondapalem, Dornala, Markapuram and Giddalur), Guntur district (Mandals of Vinukonda, Narasaraopet, Chilakaluripet, Sattenapalle and Piduguralla) and Anantapur district (Mandals of Guntakal, Gooty, Pamidi, Tadipatri and Uravakonda). After through screening for different plant growth promoting characteristics i.e., zinc solubilization efficiency, silica solubilization efficiency, phosphate solubilization efficiency, potassium releasing efficiency, exopolysaccharide production activity, indole acetic acid production activity, siderophore production activity and different biochemical tests, two efficient zinc solubilizing bacterial isolates and two efficient silica solubilizing bacterial isolates were selected. The efficient isolates were identified as ZnKJJ-4 (Pseudomonas knackmussii B13 - 99.80 % identity), ZnPGG-1 (Pseudomonas aeruginosa strain FQM - 99.66 %), SiKPP-1(Bacillus mucilaginosus strain CGMCC 1.2326 - 99.95 % identity), SiPYY-3 (Bacillus megaterium PSB1 - 99.92 % identity) by using 16S rRNA phylogenetic study. Further, shelf life of efficient zinc and silica solubilizing bacterial isolates were studied using different carrier material (Lignite, peat and charcoal powder) to check the viability in a period of six months of storage in the incubator at 250C. Zinc solubilizing bacterial isolates survived better in the lignite. Silica solubilizing bacterial isolates persisted in charcoal powder. Pot culture and field trials were conducted with efficient zinc and silica solubilizing bacterial isolates and their consortia (ZnKJJ-4 + ZnPGG-1 + SiKPP-1 + SiPYY-3) in combination with different treatments and recommended dose of fertilizer. In the pot culture experiment, significantly highest zinc solubilizing bacteria (6.94 Log CFU g-1 soil), silica solubilizing bacteria (6.98 Log CFU g-1 soil), total bacteria (9.85 Log CFU g-1soil), fungal population (5.37 Log CFU g-1 soil) and actinomycetes population (6.68 Log CFU g-1 soil) were observed in T13 (RDF + ZnKJJ-4 & ZnPGG- 1 + SiKPP-1 & SiPYY-3) at 90 DAS. Highest chlorophyll content (1.94 mg g-1), dry matter production (47.7 gm pot-1),available nitrogen (249.4 kg ha-1), available phosphorus (61.8 kg ha-1), available potassium (347.9 kg ha-1), zinc (0.99 ppm) and silica content (90.8 ppm) in soil was highest in T13 in pot culture experiment. Highest dehydrogenase activity (574.7 μg TPF g-1 day-1), acid phosphatase activity (85.36 μg pNP g-1 h-1), alkaline phosphatase activity (138.69 μg pNP g-1 h-1) and urease activity (69.61 μg TPF g-1 day-1) in soil was observed in T13. Highest nitrogen (0.99 %), phosphorous (0.58 %) and potassium (2.18 %) percentage in plant was found in T13 at 90 DAS in pot culture. Similarly, zinc (0.75 ppm) and silica (0.99 ppm) content in plant and also total zinc (0.39 ppm) and silica (0.89 ppm) content in grain were highest in T13 in pot culture experiment at 90 DAS. Plant height at 90 DAS (75 cm), panicle length (17.4 cm panicle-1), number of grains per panicle (145 panicle-1), number of filled grains per panicle (127 panicle-1), 1000 grain weight (17.1 g), grain yield (27.9 g pot-1) and straw yield (49.7 g pot-1) were significantly higher in T13 when compared to the other treatments in pot culture. In the field studies, T13 (RDF + ZnKJJ-4 & ZnPGG- 1 + SiKPP-1 & SiPYY-3) at 90 DAS recorded significantly highest zinc solubilizing bacteria (6.98 Log CFU g-1 soil), silica solubilizing bacteria (6.94 Log CFU g-1 soil), total bacteria (9.96 Log CFU g-1 soil), fungal population (5.48 Log CFU g-1 soil) and actinomycetes population (6.89 Log CFU g-1 soil). Highest chlorophyll content (2.04 mg g-1), dry matter production (2547kg ha-1), available nitrogen (262.3 kg ha-1), available phosphorus (64.7 kg ha-1), available potassium (349.6 kg ha-1), zinc (1.14 ppm) and silica (98.9 ppm) content in soil were found highest in T13. Highest dehydrogenase activity (583.6 μg TPF g-1 day- 1), acid phosphatase activity (90.18 μg pNP g-1 h-1), alkaline phosphatase activity (148.69 μg pNP g-1 h-1) and urease activity (72.72 μg TPF g-1 day-1) in soil was observed in T13. Highest nitrogen (1.10 %), phosphorous (0.67 %) and potassium (2.29 %) percentage as well as zinc (0.96 ppm) and silica (1.08 ppm) content in plant were found in T13 at 90 DAS in field conditions. Under field conditions, T13 recorded highest total zinc (0.58 ppm) and silica (0.98 ppm) content in grain. Plant height at 90 DAS (77.1 cm), total number of tillers per m2 (496), panicle length (18.2 cm panicle-1), number of grains per panicle (157 panicle-1), number of filled grains per panicle (140 panicle-1), 1000 grain weight (19.2g), grain yield (5523 kg ha-1) and straw yield (6893 kg ha-1) were significantly higher in T13 when compared to the other treatments. The present investigation showed influence of efficient zinc and silica solubilizing microorganisms on the plant growth and yield of direct sown paddy crop under pot culture and field conditions. Zinc and silica solubilising bacteria along with RDF (T13) enhanced the availability N, P, K, Zn and Si nutrients in the soil and nutrient content in plant, improved the enzymatic activity, soil microflora, soil health and fertility status of the soil.
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