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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: Entomology × Start date: 2000 × Thesis Type: M.Sc ×
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Now showing 1 - 9 of 26
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    ThesisItemEmbargo
    STUDIES ON THE FLORAL ARCHITECTURE, POTENTIALITY OF POLLINATORS IN ENHANCING THE FRUIT YIELD AND QUALITY PARAMETERS OF DRAGON FRUIT, Hylocereus spp. (Fam. Cactaceae
    (University of Agricultural Sciences, Bangalore, 2022-12-22) NAGABHUSHANA, REDDY; ESWARAPPA, G
    The floral biology of Hylocereus undatus Haw. and Hylocereus polyrhizus Haw. in relation to floral visitors for enhancing cross pollination studied at farmer’s field, Suradenupura, Yelahanka, Bengaluru during 2021-22. Totally, 61 parameters with respect to morphology and floral biology were recorded. The flowering period initiated during 3rd week of April and required 17.75±0.96 and 19±2.58 days from bud initiation to flower opening in H. undatus and H. polyrhizus, respectively. Anthesis started at 19:00 hrs, reached maximum between 01:30 to 03:40 hrs and closed completely on next day between 11:30 to 12:00 hrs, while, anther dehiscence (14:00 hrs) started 5 hrs before anthesis. Pollen grains were viable (17:00 hrs) after 3 hrs of anther dehiscence, but stigma receptivity (23:00 hrs) started 9 hrs after anther dehiscence, after 6 hrs of pollen viability and 4 hrs after anthesis. Longevity of flower was 16 hrs and 30 minutes. Cessation of flowering is on 2nd week of September in H. undatus and 3rd week of October in H. polyrhizus. Sepals of un-opened flower buds secreted nectar and pollen is major floral reward for floral visitors. Heterostyly and protandry nature of flowers needs external agents for pollination. 14 floral visitors were recorded of which A. mellifera abundance was maximum. Fruit yield and quality attributes including total returns were maximum in open, diurnal and hand pollination compared to nocturnal pollination and control.
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    EVALUATION OF DIFFERENT HIVE DESIGNS ON THE PERFORMANCE OF STINGLESS BEE, Tetragonula iridipennis Smith IN SELECTED ECOSYSTEMS OF BENGALURU
    (University of Agricultural Sciences, Bangalore, 2022-12-22) NANDEESHKUMAR, C K; ESWARAPPA, G
    Studies on evaluation of different hive designs on performance of Tetragonula iridipennis Smith in five urban and peri-urban ecosystems of Bengaluru was carried out during 2021-2022. Totally, one hundred and sixty-eight floral plants (59 families) at (Botanical Garden, Bioversity and NBAIR) UAS, GKVK Bengaluru, ninety-nine floral plants (42 families) at Ethno Botanical Garden (I-AIM), Bengaluru, ninety-eight floral plants (38 families) at BBMP park, Sampigehalli lake, Jakkur, seventy-six floral plants (35 families) at Purva- Venezia Apartment, Bengaluru and fifty-six floral plants (33 families) at Farmer’s field, Tatva Vaidika Grama, Bengaluru were visited by T. iridipennis. The floral plants include ornamental plants, weeds, tree species, medicinal plants, fruit crops and field crops. The maximum number of floral plants provided both nectar and pollen compared to only pollen or nectar. The maximum number of floral plants that were visited by T. iridipennis, were flowered from January-December in selected urban and peri-urban ecosystems of Bengaluru which facilitated the better growth and development of T. iridipennis colonies. Five hive designs (HD) viz., HD- 1 (5575 cm3), HD-2 (23x10x10 cm3), HD-3 (30x10x10 cm3), HD-4 (18x15x5 cm3 (Brood chamber) and 18x15x4 cm3 (Honey chamber) and HD-5 (27x12x10 cm3) were evaluated for the growth and development of T. iridipennis in selected urban and peri- urban ecosystems of Bengaluru. Volume of brood cells, pollen pots, honey pots, colony, number of brood cells, pollen pots, honey pots, hive occupancy and weight of T. iridipennis colonies was maximum in HD -3 (30x10x10 cm3) compared to rest of hive designs.
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    SCREENING OF Bacillus thuringiensis ISOLATES AGAINST GREATER WAX MOTH (Galleria mellonella L.) INFESTING Apis cerana AND THEIR MOLECULAR CHARACTERIZATION
    (University of Agricultural Sciences, Bangalore, 2022-12-23) VENU, H S; SHYLESHA, A N
    Greater waxmoth, Galleria mellonella L. is an important pest of honeybees and remained as nightmare for beekeeping farmers. In the present study, the effectiveness of different strains of Bacillus thuringiensis were evaluated against Galleria mellonella. The biocontrol potential of NBAIR-BtGa gave pest mortality rate of 68 per cent followed by NBAIR-VGa1f (60%), and standard HD-1 (52%), with respective LC50 values of 257.03, 350.26 and 407.38 μg/ml. Whole genome sequencing of genomic DNA and plasmid of NBAIR-BtGa, NBAIR-BtVGa1 and NBAIR-BtVGa2 samples resulted in the identification of a size of 5.96, 0.81, 0.97 and 0.89 Mb, respectively consisting of 6109, 779, 971 and 903 protein coding genes, respectively. Through Cry gene profiling, a total of five Cry genes (Cry1Da1, Cry2Af1, Cry1Cb1, Cry1Ac18, and Cry1a14), two Cry genes (Cry1a14 and Cry2Ab), and two Cry genes (Cry2Aa1 and Cry1Ac5), respectively, were detected in the plasmids of the NBAIR-BtGa, NBAIR-BtVGa1, and NBAIRBtVGa2. Other insecticidal genes viz., Vip3Bb2, Cyt genes, Hemolytic enterotoxin, Zwittermycin A resistance protein, Hemolysin protein, Serine protein kinase, Bacillolysin, DEAD BOX helicase was also observed in this study have toxicity towards lepidopteran pests. The biosafety studies of Bacillus thuringiensis isolates on honeybees showed that the isolates were 70-80 per cent and 90 per cent safer to adults and larvae of honeybees, respectively. Bacillus thuringiensis strains were subjected to bioassay, biosafety, and whole genome sequencing (WGS), which demonstrated the strain’s efficacy as a biocontrol agent will facilitate the development of bioformulations for the management of Galleria mellonella.
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    ThesisItemOpen Access
    Bioecology and control of yellow mite, Polyphagotarsonemus latus (Banks) infesting potato (Solanum tuberosum L.) and chilli (Capsicum annuum L.)
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK BANGALORE, 2001-05-23) HONNAMMA RANI, R.; SRINIVASA, N.
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    ThesisItemOpen Access
    EFFECT OF URBANIZATION ON INSECT FAUNA: DIVERSITY OF POLLINATORS ACROSS A RURAL-URBAN GRADIENT
    (University of Agricultural Sciences, Bengaluru, 2018-08-20) PRASHANT, HULAMANI; BELAVADI, V. V.
    Massive and ever increasing rate of urbanization known to alter the natural landscape in a more dramatic and persistent fashion than any other anthropogenic landuse. However, the potential effects of urbanization on wildlife remain a poorly understood, especially in developing countries. In this context, the present study was conducted to investigate the diversity of pollinators along a gradient of increasing urbanization in Bangalore, which has experienced rapid and uncontrolled growth in the last decades. Pollinators are important component of biodiversity since they provide pollination services for agriculture and are thus indispensable in food production. To census them, yellow pan traps were employed at 180 farm sites at 3 urbanization stages (urban, peri-urban, rural) in two transects north and south of the city. The lowest richness and abundance of pollinators was recorded in the peri-urban areas, while the highest pollinator diversity was found in the rural areas, followed by the urban areas. These results not only indicated a negative effect of urbanization on pollinator diversity but also show that it is possible to maintain relatively high numbers of pollinators within the city. Pollinator abundance as well as richness positive correlated with the availability of floral resources at the landscape scale. Furthermore, analyses also indicated pollinator community composition, as well as influence of urbanization on ecological traits. Thus, the present study highlighted the need for more research on the effects of urbanization on ecology in developing countries, as the vast majority of future urban expansion will take place in developing regions.
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    ThesisItemOpen Access
    Bioecology and management of Sapota seed borer, Trymalitis margarias Meyrick (Lepidoptera : Tortricidae)
    (University of Agricultural Sciences GKVK, Banglore, 2003-04-03) KALPANA, , B.; S. SUBRAMANYA
    No Abstract
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    ThesisItemOpen Access
    STUDIES ON INSECT HOST PLANT RELATIONSHIP WITH REFERENCE TO Helicoverpa armigera (Hubner) (Lepidoptera : Noctuidae) ON SUNFLOWER (Helianthus annum L.)
    (University of Agricultural Sciences GKVK, Banglore, 2003-07-31) K.S. MANJUNATHA; N.S. BHAT
    No Abstract
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    ThesisItemOpen Access
    SPECIES COMPLEX, BIOLOGY AND MANAGEMENT OF THRIPS ON GRAPES, CV. BANGALORE BLUE
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BANGALORE, 2002-04-15) HARISH, R.; VERGHESE, ABRAHAM
    No Abstract