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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: Environmental Science × End date: 2017 × Start date: 2017 × Type: Thesis ×
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    ThesisItemOpen Access
    STUDIES ON BIOAVAILABILITY OF NUTRIENTS IN DECOMPOSED CRUSHED SEEDS, OIL CAKES AND DEOILED CAKES OF NEEM (Azadirachta indica)
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2017-07-26) KIRAN, S. C.; NAGARAJAIAH, C
    An experiment was conducted to study the “Bioavailability of nutrients in decomposed crushed seeds, oil cakes and deoiled cakes of neem (Azadirachta indica)” under the greenhouse condition. The three forms of neem cakes were subjected to decomposition for a period of 30, 60 and 90 days in a plastic containers of capacity five kg. The chemical composition of deoiled cake was 4.51 % N, 0.79 % P, 1.40 % K, 57 ppm Zn, 640 ppm Fe, 1.40 ppm Ca and oil content 1.09 % while in oil cake and crushed seeds 4.21 and 3.99 % N, 0.71 and 0.64 % P, 1.30 and 1.10 % K, 49 and 43 ppm Zn, 630 and 633 ppm Fe, 1.40 and 1.30 ppm Ca and oil content 10.27 and 22.53 % respectively. The nutrient release has increased by increasing number of days of decomposition and the higher nutrient release was observed in deoiled cake at 90 days of decomposition as compare to oil cake and crushed seeds at 30, 60 and 90 days decomposition. The effect of decomposed material thus obtained after 30, 60 and 90 days of decomposition was tested on maize crop. It was found to have enhanced growth parameters in terms of plant height, fresh weight and dry weight, root length, nutrient uptake and SPAD chlorophyll in the treatment deoiled cake.
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    ThesisItemOpen Access
    ASSESSMENT OF DIVERSITY MEASURES OF BIOLOGICAL HETEROGENEITY USING INSECTS ATTRACTED TO LIGHT
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2017-07-24) JOSHUA MATATA, KIMONDIU; GANESHAIAH, K. N.
    A study was undertaken to assess (a) temporal patterns of insect activity and diversity, (b) evaluate the measures of biological diversity and, (c) identify possible indicator groups of total insect diversity in an agroecosystem at GKVK Campus, University of Agricultural Sciences, Bengaluru. The study used light traps to collect insects from 8th May, 2015 to 6th December, 2016 at 21 day intervals. A total of 209,098 individuals belonging to 764 morpho-species or Operational Taxonomic Units (OTUs), representing 101 families from 12 orders were collected. The Simpson’s index of diversity was 0.9732, the Shannon- Wiener index was 4.4443 and Avalanche index was 1.1693. Five orders, viz., Coleoptera, Hemiptera, Lepidoptera, Diptera and Hymenoptera dominated the collections. The relative proportions of these five orders at GKVK agroecosystem were different from those of the global and Indian insect communities; Coleoptera was over represented at GKVK while Lepidoptera, Diptera and Hymenoptera were under represented. Order Coleoptera was found to be a good indicator of the total insect diversity and this perhaps is because it was the most predominant component of the collections. The study recommends that light traps may be used for addressing broad ecological questions and to estimate the total insect diversity. While Simpson and Shannon-Weiner indices were strongly correlated with the species richness, Avalanche Index (AI) was not; probably because the biological heterogeneity that AI captures was not strongly reflected in species richness.Insect diversity and abundance was higher during summer and post monsoon and less during winter and rainy seasons. Rainfall and relative humidity over three days negatively affected the insect diversity and activity. Temperature cumulated over three week period negatively impacted the species richness though the abundance was not affected. Width of body increased with length at higher rate in Coleoptera and Hemiptera than Hymenoptera and Diptera suggesting that the former tend to become broader than the later. Coleoptera also had higher rate of increase in body weight with length probably due to the elytra. We have argued that insects adopt varying degrees of the two competing strategies for their protection: Thickening of forewing and adoption of flight agility. While Coleoptera and Hemiptera adopt the former, the Lepidoptera, Diptera and Hymenoptera adopt the later strategy.
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    ThesisItemOpen Access
    RECLAMATION OF PROBLEMATIC SOIL THROUGH TECHNOLOGICAL INTERVENTIONS AND AFFORESTATION WITH SUITABLE TREE SPECIES
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2017-07-14) BHARATH, M. K.; Mahadeva Murthy, M.
    Land degradation due to sodicity continues to be a serious impediment to the maintenance of sustainable and profitable land use systems in arid and semi-arid regions. With this background, a study was carried out at V. C. Farm, Mandya, Karnataka to reclaim the sodic soil through suitable technological interventions viz., application of gypsum, FYM and cross trenches as well as by identifying suitable tree species, where the soil was sodic with pH 8.69, EC 0.96 (dSm-1), OC 0.27 % and ESP of 25.57 %, respectively. Based on the socio-economic benefits and local utility, one year old healthy seedlings of eight tree species, Viz., Syzygium jambolana, Grevillea robusta, Melia dubia, Simarouba glauca, Pongamia pinnata, Terminalia catappa, Syzygium cumini and Terminalia arjuna were selected. Observations on plant height, collar diameter, root length, number of secondary roots and total dry matter were recorded at periodic intervals till 180 days after planting. Per cent increase in plant height over control was highest in Syzygium jambolana (26.89 %) followed by Terminalia catappa (23.29 %) and collar diameter was highest in Terminalia catappa (17.33 %), Syzygium cumini (12.70 %) further, the total dry matter was highest in Melia dubia (44.73 %) and Syzygium cumini (37.84 %), and Melia dubia showed highest survival rate (23.97 %) over control. Chemical properties of soil was also improved with pH 8.22, EC 0.68 dSm-1, OC 0.50 % and ESP 11.68 % at 180 DAP compare to control. In the present investigation, Syzygium cumini, Pongamia pinnata and Syzygium jambolana performed better.