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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.

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Subject: Microbiology × Start date: 1980 ×
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Now showing 1 - 9 of 9
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    ThesisItemOpen Access
    EFFECT OF HUMIC ACID BASED LIQUID NUTRIENT FORMULATION ON SOIL BIOLOGICAL PROPERTIES, GROWTH AND YIELD OF PADDY (Oryza sativa L.), MAIZE (Zea mays L.) AND TOMATO (Lycopersicon esculentum Mill.) UNDER FIELD CONDITION
    (University of Agricultural Sciences, Bangalore, 2022-12-06) LAVANYA, S M; MUTHURAJU, R
    The present study was carried out to understand the effect of different humic acid basedliquid nutrient formulations and humic acid coated fertilizers on soil biological properties,growth and yield of paddy, maize and tomato under field condition. Application of the humicacid based liquid nutrient formulations i.e., Product 1 @ 2.0 l/acre stimulated significantlyhigher population of free-living nitrogen fixers in paddy (9.64×104 CFU/g), maize (9.69×104CFU/g) and tomato (9.99×104 CFU/g) rhizosphere. Further, highest dehydrogenase enzymeactivity in paddy (124.52 μg TPF/g/h), maize (126.07 μg TPF/g/h), tomato (151.25 μg TPF/g/h)and microbial biomass carbon and nitrogen in paddy (402.43 and 46.95 μg/g of soil), maize(455.26 and 53.11 μg/g of soil) and tomato (446.41 and 52.08 μg/g of soil) rhizosphere wasobserved in treatment that received the Product 1 @ 2.0 l/ac. Application of humic acid coatedfertilizer recorded increased plant height (128.19 cm), number of tillers (24.81/plant), numberof panicles per plant (19.38), grain yield (31.76 q/ha) in paddy, highest seed weight at harvest(124.94 g), grain yield (64.91 q/ha) in maize and highest plant growth parameters, highestnumber of fruits per plant(19.52), fruit weight per plant (8.70 kg) and fruit yield (66.13 q/ha) in tomato. It is evident from the data obtained in the field experiment involving paddy, maize andtomato that application of humic acid based liquid nutrient formulation product 1 @ 2.0 l/acreenhanced the biological properties of rhizosphere soils, growth and yield of these cropscompared to the soil which received inorganic fertilizers.
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    ThesisItemOpen Access
    GENETICAL STUDIES IN GERBERA (Gerbera jamesonii Bolus)
    (UNIVERSITY OF AGRICULTURAL SCIENCES,BANGALORE, 1998) S, ANURADHA; J V, NARAYAN GOWDA
    Abstract not available
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    ThesisItemOpen Access
    ACCELERATION OF PRESSMUD DECOMPOSITION BY MICROBIAL INOCULATION FOR QUALITY PRODUCT
    (UNIVERSITY OF AGRICULTURAL SCIENCES, BANGALORE, 1997) UTHAIAH, P A
    Abstract not available
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    ThesisItemOpen Access
    CHEMOLITHOTROPHY AND H2-SUPPORTED DINITROGEN FIXATION IN AEROBIC HETEROTROPHIC N2-FIXING BACTERIA ASSOCIATED WITH WETLAND RICE
    (UNIVERSITY OF AGRICULTURAL SCIENCES, BANGALORE, 1984) SIDDARAME GOWDA, T K; WATANABE, IWAO
    ABSTRACT NOT AVAILABLE
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    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.
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    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.
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    ThesisItemOpen Access
    INFLUENCE OF LACTIC ACID BACTERIAL INOCULATION ON ENHANCEMENT OF SHELF LIFE OF MINIMALLY PROCESSED CUT FRUITS AND VEGETABLES STORED IN ACTIVE BREATHABLE BAGS
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2015-07-14) PRAGATHI NAG, H. N; Narayanaswami, B
    A study was conducted to investigate the influence of isolated Lactic Acid Bacterial (LAB) inoculation and modified atmosphere packaging using Active Breathable Bags (ARB) on post-harvest qualities of minimally processed cut fruits and vegetables like Pineapple, Pomegranate, Carrot and Cucumber, kept at 4 and 10ᴼ C. High permeabilities of ARB film to O2 (18 % v/v) and CO2 (< 1% v/v) significantly affected levels of modified atmosphere conditions in package headspaces. On the other hand LDPE (control) packaging maintained O2 (9 % v/v) and CO2 (8.2 % v/v). High levels of O2 in ARB bags apparently increased the rates of respiration resulting in spoilage, although there was less per cent spoilage in LDPE compared to ARB. Mean while treatment with ARB+LAB was on par with LDPE. Increased microbial load was observed in ARB bags. However, in ARB+LAB treated significantly reduced the total viable counts in storage. Whilst vitamin C and antioxidants of cut fruits and vegetables packed in ARB+LAB bags were higher than those in ARB. Evaluation of organoleptic characteristics scored good acceptability with respect to LDPE and ARB+LAB compared to ARB bags alone. This study suggests that Lactobacillus plantarum could be successfully applied during processing of fresh-cut fruits and vegetables, contributing as a bio-preservative agent inducing a protective effect against relevant food borne pathogens
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    ThesisItemOpen Access
    MICROBIAL CONTROL OF TOMATO FRUIT BORER, Helicoverpa armigera (Hubner) BY ENTOMOPATHOGENIC FUNGAL AGENTS
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2009-07-10) PESAL, SAVITHA; SHIVAPRAKASH, M K
    The investigations on “Microbial control of tomato fruit borer, Helicoverpa armigera (Hubner) by entomopathogenic fungal agents” were carried out during 2008-2009 at the Bio-Control Research Laboratories (BCRL), Pest Control (India) Pvt. Ltd., located at Sriramanahalli, Doddaballapur road, Bangalore. Dose mortality response between Helicoverpa armigera and Beauveria bassiana, Metarhizium anisopliae, Nomuraea rileyi and Verticillium lecanii in the laboratory indicated that mortality of larvae increased with increase in concentration and exposure period. Younger larvae found to be more susceptible to fungal species than older ones. N. rileyi (Nr1) proved superior to B. bassiana (Bb1, Bb2, Bb3) and M. anisopliae (Ma1, Ma2, Ma3). Whereas, V. lecanii (Vl1, Vl2, Vl3) failed to cause disease in H. armigera larvae. N. rileyi (Nr1) was used for further studies. Among the storage conditions, Nomuraea rileyi conidia in wettable powder formulation and oil based formulation recorded highest per cent germination in refrigerated conditions (40C) than at room temperature (27OC). The wettable powder formulation of Nomuraea rileyi viz., Bentonite + glucose (7:1) and Bentonite recorded 71 and 69 per cent mortality, respectively and the oil based formulations viz., sunflower oil, sesame oil and ground nut oil recorded 82, 77 and 77 per cent mortality respectively against 3rd instar larvae of H. armigera under laboratory conditions. In the field experiment, Nomuraea rileyi in sunflower oil formulation (15.43 t/ac) and Bentonite formulation (14.83 t/ac) were proved better. Significantly higher yield was noticed in chemical control (17.28 t/ac).
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    ThesisItemOpen Access