Thumbnail Image

University of Agricultural Sciences, Bengaluru

University of Agricultural Sciences Bangalore, a premier institution of agricultural education and research in the country, began as a small agricultural research farm in 1899 on 30 acres of land donated by Her Excellency Maharani Kempa Nanjammanni Vani Vilasa Sannidhiyavaru, the Regent of Mysore and appointed Dr. Lehmann, German Scientist to initiate research on soil crop response with a Laboratory in the Directorate of Agriculture. Later under the initiative of the Dewan of Mysore Sir M. Vishweshwaraiah, the Mysore Agriculture Residential School was established in 1913 at Hebbal which offered Licentiate in Agriculture and later offered a diploma programme in agriculture during 1920. The School was upgraded to Agriculture Collegein 1946 which offered four year degree programs in Agriculture. The Government of Mysore headed by Sri. S. Nijalingappa, the then Chief Minister, established the University of Agricultural Sciences on the pattern of Land Grant College system of USA and the University of Agricultural Sciences Act No. 22 was passed in Legislative Assembly in 1963. Dr. Zakir Hussain, the Vice President of India inaugurated the University on 21st August 1964.

Browse

2016 - 20182
Reset filters
Subject: Microbiology × Start date: 2009 × Type: Thesis × Thesis Type: Ph.D ×
Reset filters

Search Results

Now showing 1 - 2 of 2
  • Thumbnail Image
    ThesisItemOpen Access
    STUDIES ON THE MICROBIAL MANAGEMENT OF ROOT ROT OF OKRA (Abelmoschus esculentus L.)
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2018-03-13) ANANTHA RAMA, A.; Krishna Naik, L.
    Effect of biocontrol agents and PGPR on growth, yield and root rot suppression in okra (Abelmoschus esculentus L.) was studied under both pot and field conditions. Wide range of biocontrol agents and PGPR were isolated by conducting systemic survey in okra growing regions of southern parts of Karnataka and based on the in vitro studies, efficient isolates were selected and used against the root rot causing pathogen Fusarium solani. The results obtained were clearly revealed that the combination of Trichoderma viride + Pseudomonas fluorescens + Bacillus megaterium showed significant increase in the growth, yield and root rot disease suppression in okra under pot and field conditions. The growth and yield parameters such as plant height (141 cm), number of leaves (13.33), number of branches/plant (4.33), fruit length (16.4 cm), fruit diameter (1.68 cm), number of fruits/plant (23.33), fresh fruit yield/plot (34.78 kg), fresh fruit yield (18.40 t/ha) and least root rot disease incidence (4.67 %) was noticed. Microbial analysis of rhizosphere soil at crop harvest in the above mentioned treatment combination has showed increased microbial population of beneficial microflora viz., Trichoderma spp. (38.33 × 104 cfu g-1 soil), Pseudomonas spp. (50.33 × 104 cfu g-1 soil), P solubilizers (78.33 × 104 cfu g-1 soil) and Azotobacter spp. (34.00 × 104 cfu g-1 soil). The result of this study has clearly brought out that conjunctive use of Trichoderma viride + Pseudomonas fluorescens + Bacillus megaterium as soil application is advantageous for the growth, yield and root rot disease control in okra.
  • Thumbnail Image
    ThesisItemOpen Access
    MOLECULAR AND BIOCHEMICAL CHARACTERIZATION OF ENDOPHYTIC BACTERIA ASSOCIATED WITH AEROBIC RICE AND THEIR ROLE IN PLANT GROWTH
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2016-10-07) AMANDA, SHYLLA; Shivaprakash, M. K.
    Bacterial endophytes occur inside a plant and act as plant growth promoting bacteria. The present study was carried out to isolate and characterize endophytic bacteria residing inside the aerobic rice varieties and evaluate their role as plant growth promoters. Twenty-four endophytic bacteria were isolated from the leaves, stems, and roots of four aerobic rice genotype. The diversity study was carried out by culture dependent and culture independent techniques. Through culture based method four genera were identified and were further clarified by culture independent method. The genera identified are Pantoea, Pseudomonas, Serratia, Bacillus, Achromobacter, Brevundimonas, and two other genera which were yet to be characterized. Metagenomic work was carried to get clear picture of diversity of bacterial endophytes. Through 16S rRNA sequence using specific primers, it was confirmed that there are ten genera associated with the aerobic rice variety. Most of the isolated endophytes showed plant growth-promoting (PGP) ability like nitrogen fixing ability, phosphate solubilizing activity and production of gibberellic acid (GA), indole acetic acid (IAA), cytokinin, 1- aminocyclopropane-1-carboxylate (ACC) and siderophores. Four isolates showed antagonistic effect against Rhizoctonia solani and the best isolates was identified as Pseudomonas sp. Three isolates Pseudomonas sp, Serratia sp and Pantoea sp were selected for greenhouse study. These bacterial endophytes either individually or in combination with reduced amount of fertilizers improved plant growth and yield of the aerobic rice. These results strongly suggest that the endophytic bacteria characterized in this study could be successfully used to promote plant growth and inducing fungal resistance in plant.