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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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Author: SUBHASH BEEMASHEPPA, KANDAKOOR × Start date: 2014 ×
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    ThesisItemOpen Access
    Effect of elevated carbon dioxide, temperature, plant secondary metabolites on biology and molecular diversity of melon fruit fly Bactrocera cucurbitae Coquillett (Diptera: Tephritidae)
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2014-06-10) SUBHASH BEEMASHEPPA, KANDAKOOR; chakravarthy, a k
    Climate change may lead to expansion or intensification of damage to cucurbit groups by melon fruit fly. Global warming may also impact management practices which are currently being practiced against melon fruit fly in cultivated ecosystems. Therefore, biological studies under elevated temperature and CO2 levels were carried out in the laboratory. As the temperature increased beyond 240C the mortality of melon fruit fly increased from 19.07 % at 240C to 100 % at 360C. Melon fruit fly exhibited almost normal growth and development at 240C. Levels of elevated carbon dioxide (380 and 570 ppm) did not elicit varied response to melon fruit fly growth and development. In a given cucurbit vegetables and varieties, levels of phenols, tannins, sugars and proteins significantly influenced in rendering the resistance or susceptible. Phenols and tannins assist the cucurbit fruits in defending against the attack of melon fruit fly while sugars and proteins make it vulnerable for the cucurbits to fruit fly damage. Estimates on activity of antioxidant enzymes viz., POD, SOD, PAL and CAT revealed that high activity in chow chow and bottle gourd did not support the growth and development of melon fruit fly. For instance, in chow chow, the peroxidase activity increased two folds from healthy (6.14 μmoles min-1mg protein) to affected fruits (11.33 μmoles min-1mg protein) and exhibited increased peroxidase activity of 252% more activity compared to snake gourd with only 84.13% increase. The SOD showed increased activity of 39.16% from healthy to apparently healthy fruits compared to only 10.52% increase in snake gourd which is highly susceptible. Similarly, increased PAL activity of 389% more in apparently healthy fruits compared with healthy fruits and only 17.61% increase was observed in snake gourd. In contrary to the above enzymes, the maximum decrease in catalase activity was observed in chow chow i.e. 56.62% compared to snake gourd which showed increased activity of 7.75%. Molecular diversity of melon fruit fly populations are genetically heterogenous across different climatic zones of Karnataka. This indicted that, further studies involving ITS markers are essential for detecting differences among genetically different populations. Such studies are essential as they provide crucial information for developing management practices in different agroclimatic zones.
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    ThesisItemOpen Access
    STUDIES ON SUCKING INSECT PESTS OF GROUNDNUT (Arachis hypogaea L.) AND THEIR MANAGEMENT
    (University of Agricultural Sciences GKVK, Bangalore, 40865) SUBHASH BEEMASHEPPA, KANDAKOOR; KHADER KHAN, H
    Investigations on incidence and management of sucking insect pests were carried out during kharif 2010. Twelve sucking insect pest species were recorded on all the growth stages of the groundnut crop at Chintamani (Chikkaballapur). Among them, thrips, leaf hoppers, planthoppers, and aphids were the major pests. Eurybrachid bug, pentatomid bug were the minor sucking insect pests. The peak activity of sucking insect pests commenced 30 days after sowing and peak incidence was recorded during September, 2010. Total developmental period of Scirtothrips dorsalis ranged from 13.30 ± 1.69 days from egg to adult emergence. Adult female was characterized by yellow body with rectangular head, pink prominent eyes, 8 segmented antenna and arc like brownish patches on the dorsal side of 2nd to 7th abdominal segments. Female thrips oviposited singly on tender pods and leaves towards veins and margins. Studies on screening of 56 genotypes of groundnut revealed that no genotype reacted as immune, however 13 genotypes reacted as resistant, 25 genotypes as moderately resistant, 11 genotypes as moderately susceptible and 7 genotypes proved to be susceptible and none of genotypes were highly susceptible with respect to per cent foliage damage in case of thrips. Similarly 23 genotypes showed resistance, 11 genotypes were moderately resistant, 18 genotypes were moderately susceptible and 4 genotypes proved susceptible and none of genotypes showed highly susceptible with respect to per cent foliage damage in case of leafhoppers. Among the various biochemical constituents analysed in groundnut, phenols and tannins had significant and negative relationship with number of thrips, leafhoppers and their damage per cent. Total sugars, amino acids and reducing sugars shown positive relationship with number of thrips, leafhoppers and their damage per cent. Linear regression analysis revealed that higher tannins and phenols were the major contributing factors for resistance against thrips and leafhoppers. Among indigenous materials, NSKE recorded comparatively higher per cent reduction of thrips and leafhoppers number; among new insecticide molecules acetamprid 20 SP and imidachloprid 200 SL proved highly effective in the control of thrips and leafhoppers. The acetamprid 20 SP application resulted in highest B:C ratio (24.24) followed by imidachloprid 200 SL (7.54).