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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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  • ThesisItemOpen Access
    INFLUENCE OF HIVE DESIGN ON SEASONAL PERFORMANCE OF STINGLESS HONEY BEE, Tetragonula iridipennis (Smith)
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2016-08-03) PALLAVI, K; Kuberappa, G .C
    Stingless bees or dammer bees are found in most parts of the world and these bees considered as valuable domestic species. Rearing of these bees is called as meliponiculture, (Heard, 1999). Meliponiculture has been practiced in many countries including various parts of Latin America. Stingless bees occur in all tropical regions of the world. Hundreds of species have been described. These belong to the super family Apoidea, family Apidae and sub family Meliponinae, which is one among three subfamilies of Apidae, which consists of eight genera, having 15 sub-genera. Meliponinae consists of two tribes Meliponini and Trigonini (Wille,1983). Trigona is the largest and most widely distributed genus, which includes 130 species under ten sub-genera. Melipona consists of 50 species and confined to the Neotropics. All Asian and African stingless bee species belong to the tribe Trigonini. The various genera in this tribe include Trigona, Plebeia. Tetragona and Nanotrigona (Camargo et al., 1988)
  • ThesisItemOpen Access
    CULTURABLE MICROBIAL DIVERSITY ASSOCIATED WITH GUT OF APIS SPP. (HYMENOPTERA: APIDAE)
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2015-07-10) SUMA, K. P.; Shylesha, A N
    Honeybees are known to harbour microorganisms in the gut which play an important role in their nutrition. In the present study bacterial strains were isolated from foregut, midgut and hindgut of Apis cerana, A. mellifera, A. jlorea and A. dorsata workers and drones and from different gut regions of queen of A. cerana and A. jlorae collected from different regions of Bengaluru. Identification and characterization of microbes was done by gram staining technique for each isolated strains to differentiate between gram positive and gram negative organisms. The morphological characters of all isolated bacterial colonies were also studied. Total bacterial genomic DNA was extracted from the gut and amplified using PCR with 16S rRNA primers. The partial 16S rDNA sequences from Apis spp. revealed the presence of novel bacterial flora, Bacillus spp. which were more predominant in different guts of worker, queen and drone of Apis spp. The gut microflora varied from gut to gut within the caste and also varied from caste to caste within the species. Acinetobacter iwoffi and Klebsiella varricolawas identified only in Apis jlorea drones compared with other castes and species. In Apis dorsata, Pseudomonas sp. was found which was not found in any other species. The phylogenetic analysis of the Apzs spp. using bacterial strains of different gut regions of different castes clearly indicated the microbial diversity which can be used for management of bee health and as antimicrobial agents.
  • ThesisItemOpen Access
    INSECT POLLINATORS DIVERSITY WITH SPECIAL REFERENCE TO ROLE OF ATTRACTANTS IN INCREASING PRODUCTIVITY OF WATERMELON [Citrullus lanatus (Thunb.)]
    (University of Agricultural Sciences GKVK, Bangalore, 2013-07-22) NOOTHAN KUMAR, N N; KUBERAPPA, G C
    Insect pollinators diversity with special reference to role of attractants in increasing productivity of watermelon [Citrullus lanatus (Thunb.)] was carried out during summer season of 2012-2013 at Agriculture Farm, National bureau of agriculturally important insects, Atturu Layout, Yalahanka, Bangalore. Sixteen and twenty two species of insect pollinators were recorded on flowers of watermelon before and after application of attractants with citral-a and citral-b. Among them, fifteen species were belong to order Hymenoptera, four to Diptera, two to Lepidoptera and one to Coleoptera. The abundance of Apis cerana was constituted 58.61 per cent of the total insect pollinators against 41.39 per cent of other pollinators. The quantity of nectar and its sugar concentration was more in female flowers (3.43 μl and 60.75 %) than in male flowers (2.53 μl and 52.25 %). Effectiveness of attractants in improving quantitative and qualitative parameters such as fruit set, fruit weight, fruit volume, fruit length, number of sound seeds, test weight, moisture, ash content, TSS and germination percentage were maximum in open pollination treated with Citral-a.