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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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2017 - 201912020 - 20221
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Subject: Agricultural Entomology × Author: ARAVINDA × Start date: 1960 × Type: Thesis ×
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    ThesisItemEmbargo
    DIVERSITY AND MOLECULAR CHARACTERISATION OF NATURAL ENEMY COMPLEX AND EVALUATION OF BIO CONTROL STRATEGIES AGAINST MAJOR INSECT PESTS OF BHENDI (Abelmoschus esculentus L. Moench)
    (University of Agricultural Sciences, Bangalore, 2022-12-30) ARAVINDA; Shylesha, A N
    Bhendi or Okra Abelmoschus esculentus L. Moench) is one of the important vegetable crop, which is growing throughout the India. Due to ill effect of chemicals, usage of botanicals, bio pesticides and natural enemies, is an ecologically viable option for sustainable pest management. The experim ents were conducted during rabi 2019, S ummer 2020 and k harif 2020 on bhendi crop to study the population dynamics of sucking pests and their natural enemies The results revealed that t he activity of insect pests such as aphids, leafhoppers, were more in k harif , the whiteflies activity was more in s ummer. The activity of predators like ladybird beetles and spiders were more in k harif The population of total predatory and parasitoids fauna occurring in bhendi field viz., ants 20 species ), spiders 17 species ), coccinellids 11 species ), other predators 12 species like green lacewing, praying mantis, earwigs, etc.etc., and Hymenopteran parasitoids 24 species About 17 species of natural enemies were molecularl y characterized and their sequence in the range of 532 to 658 bp product of COI gene and their accession numbers obtained from NCBI data base T he botanicals and mycopathogens were evaluated against sucking pests of bhendi. The result revealed that, among the treatments L ecanicillium lecanii Zimmerman ) @5g/l , was found to be superior against leafho ppers and whiteflies and Neem oil @ 0.5%, was found effective against aphid’s population. Field evaluation of braconid parasitoids against t he larval population fruit borers like Earias vittella (Fab and Helicoverpa armigera Hubner were showed that Trichogramma chilonis Ishii + Chelonus blackburnii ( Bracon brevicornis (Wesmael) is the most superior combination of parasitoids in larval parasitization. The parasitic potential of B. brevicornis was and C. blackburni was evaluated against the fruit borers . The result revealed that, the highest parasitization of B. brevicornis and C. blackburni was in 5:10 and 5:100 parasitoid host ratio respectively.
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    ThesisItemOpen Access
    ANTIMICROBIAL PEPTIDES AND THEIR ROLE AS SEED PROTECTANTS IN THE HARVESTER ANT Trichomyrmex scabriceps (Mayr) (HYMENOPTERA: FORMICIDAE)
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2017-07-30) ARAVINDA; CHANDRASHEKARA, K.
    A diverse array of resources is utilised by ants for their growth and survival. Ants are predatory, phytophagous, nectariorous, and grainivorous etc. Grainivorous ants are commonly called as “harvester ants”. The seed cleaning and other behaviours of harvester ant T. scabriceps was observed in the laboratory queen less ant nest (Formicarium). The results showed that, they perform self-grooming behaviour more frequently than antennation, followed by seed cleaning by mandibles, wall cleaning, allo-grooming, and abdominal wagging. The role of exocrine glandular secretion of these ants as seed protectant was also evaluated, the results suggest that these ants only mechanically clean the seeds in nest and they may not involve the use of any glandular secretion as antimicrobial seed protectants. Antimicrobial activity of 50 per cent acetonitrile:water extracts of head, thorax, and abdomen of T. Scabriceps was evaluated in vitro, against Gram-positive bacterium Escherichia coli and Gram-negative bacterium Staphylococcus aureus using “spot on lawn method” of bioassay. Among three body parts, head and thorax extracts does not shown any antimicrobial activity against both E. coli and S. aureus. Whereas abdomen extracts showed antimicrobial activity only against E. coli but not against S. aureus. Separation of antimicrobial peptide fractions of abdomen extracts was carried out using RP-HPLC. Among 14 fractions collected, only fraction-1 and fraction-2 showed in vitro antimicrobial activity in “spot on lawn method” bioassay. This study showed that T. scabriceps perform different behaviours in nest ant there may not be any association between antimicrobial peptides in the ants and seed cleaning behaviour.