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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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2014 - 20163
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Start date: 2013 × Type: Thesis × Rating Count: 5 ×
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    ThesisItemOpen Access
    STUDIES ON EARLY BLIGHT OF POTATO CAUSED BY Alternaria solani (Ellis and Martin) Jones and Grout
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2016-01-29) RANGANATHA, R. N; Somasekhara, Y. M
    Potato is one of the most important staple food crops, ranking fifth and fourth place in area and production in the world, respectively. Among various diseases, Alternaria leaf spot is one of the most destructive disease on potato. Cultural studies revealed that, the growth of the pathogen was maximum on solid Potato Dextrose Agar medium (78.11 mm) and maximum fungal dry matter (188 mg) was observed in Potato Dextrose broth medium. The favourable temperature for the growth of the fungus was range between 30 ºC to 35 ºC. The maximum mycelial dry weight obtained at pH 6.0 (157 mg) to 6.5 (152 mg). In vitro evaluation of fungicides revealed that, the fungicide Tebuconazole (100 %), Hexaconazole+Zineb (95.18 %) and Trifloxystrobin+ Tebuconazole (88.15 %) inhibited pathogen growth at 1000 ppm concentrations. T.viride IIHR-21 (69.63 %) and T.viride IIHR-22 (66.30 %) were found effective against A. solani. The crude leaf extracts from nine plants (Calotropis, Lantana, and Lemon grass, Nagadhale, Neem, Pongamia, Simarouba, Subabul and Tulasi) were tested against A. solani and found that Simarouba leaf extract (54.44 % at 1:1 dilution ) showed maximum inhibition of the pathogen. Under glass house condition Tebuconazole (48.33 % at 90 days) reduced disease severity and increased yield in Potato. The field evaluation offungicides, bioagents and sea weed extracts indicated that Mancozeb @ 0.2 % > Hexaconazole+Zineb @ 0.2% > Tebuconazole @ 0.1 % > Metalaxyl+ Mancozeb @ 0.2% > Tebuconazole+ Trifloxystrobin @ 0.1 % > Fenamidone+Mancozeb @ 0.2 % most effective in reducing severity (36.63 % at 90 days) of the early blight disease and increasing tuber yield (61.33 Kg/plot). In untreated check the disease severity was 83.03 per cent with plot yield of 32.66 kg. The foliar spray of fungicide combination is useful in the better management of early blight of potato.
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    ThesisItemOpen Access
    STUDY ON SUPPLY CHAIN MANAGEMENT OF CHEMICAL FERTILIZERS IN HEMAVATHI COMMAND AREA OF KARNATAKA
    (University of Agricultural Sciences, Bengaluru, 2014-12-21) MANJUNATH, S.; RAME GOWDA, P. V.
    Supply chain management is concerned with the efficient integration of the entities involved so that merchandise is produced and distributed in the right quantity to the right location and at the right time. The study on Supply Chain Management of chemical fertilizers was undertaken in two taluks of Hemavathi Command Area of Tumkur district. Hundred farmers, ten retailers and four dealers of chemical fertilizers were randomly selected. Tabular analysis and Garret ranking tools were used to analyse the data. The study indicated that three most important marketing channels were present and among them, Manufacturer  Wholesaler’s  Private Retail dealer’s  Farmers was most popular channel in the study area. Seventy per cent of the traders were using company’s vehicle, twenty per cent were using hired vehicles and ten per cent were using own vehicles. Immediate delivery of fertilizers after placing the order was noticed and no need of fertilizer advance booking. Major problems encountered by farmers are found to be lack of scientific knowledge on kind of fertilizer and dosage, long distance to retail outlets, non availability of fertilizer in right time. Problems encountered by fertilizer distributors are found to be timely non-supply of fertilizers, transportation cost, period of credit, inadequacy of retail outlets and higher taxes. The fertilizer companies and KSDA shall conduct training to the farmers on dosage and type of fertilizer application.
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    ThesisItemOpen Access
    STATUS AND REVALIDATION OF PHOSPHORUS REQUIREMENT FOR FINGER MILLET-MAIZE CROPPING SYSTEM IN SOILS OF EASTERN DRY ZONE OF KARNATAKA
    (University of Agricultural Sciences GKVK, Bangalore, 2014-10-05) CHANDRAKALA, M.; SRINIVASAMURTHY, C. A.
    An investigation on available soil phosphorus status, P fractions, requirement of P for finger millet and maize in EDZ of Karnataka and revalidation of soil test ratings for phosphorus was taken at UAS, Bangalore. Soil samples from EDZ were analysed for P status and randomly collected samples were analysed for P fractions. Response of finger millet and maize to graded levels of P was studied in the field by creating five phosphorus fertility gradients viz., P0 (Very low), P1 (Low), P2 (Medium), P3 (High) and P4 (Very high) (< 15: 16-30: 31-45: 46-60: > 60 kg P2O5 ha-1, respectively). Critical limits and soil P ratings was determined by conducting pot culture experiment in 24 soils from six different locations from each VL, L, M and H categories, using maize as test crop applied with graded levels of P. Results revealed that, application of 125% RDP with rec. NK&FYM recorded higher finger millet (31.66 and 55.32 q ha-1grain and straw, respectively) and maize (78.26 q ha-1 grain) yield in high P strip. PUE was higher with lower levels of P application. There was a build-up of P in soil with graded levels of P application to gradient strips, which was reflected by increase in total P and P fractions. Critical limit for available P2O5 was 17.00 kg ha-1 and for plant 0.12 per cent. The proposed fertility ratings for available P2O5 are <15.50, 15.51-28.00, 28.10-48.50 and >48.50 kg ha-1; VL: L: M: H, respectively. Available P2O5 in soils of EDZ ranged 10.22 to 98.32 kg ha-1. Percentage of soil samples under different category are Low (30.80) > Medium (27.20) > High (21.20) > Very low (20.80). Total-P, organic-P, reductant soluble-P, occluded-P and Ca-P increased as the soil phosphorus fertility increased and reverse trend was noticed for saloid-P, Al-P and Fe-P fractions.
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    ThesisItemOpen Access
    Population genetics of an endemic tree species Myristica malabarica Lam., and evaluation of ecological niche model
    (University of Agricultural Sciences GKVK, Bangalore, 40865) SHIVA PRAKASH, K. N; Uma Shaanker, R
    In recent years, ecological niche models (ENM) have become a popular tool to define and predict the “ecological niche” of a species. The ENMs have been extensively used in locating rare and threatened species and in rationalizing the choice of habitats for species re-introduction. An implicit assumption of the ENMs is that the predicted ecological niche of a species actually reflects the adaptive landscape of the species. Thus sites that are predicted to be highly suitable would be expected to maximize the local fitness of species’ population in contrast to sites predicted to be unsuitable. Till date there is no published evidence in support of this assumption. We attempt to evaluate this assumption. Using an ecological niche modeling tool (DIVA-GIS (version 7.3, htpp://www.diva-gis.org) we predicted the potential geographic distribution and habitat suitability classes (from highly suitable to poorly suitable) of an economically important and vulnerable tree Myristica malabarica.Lam occurring in the Western Ghats, India. We located populations of M. malabarica naturally occurring in three of the predicted habitat suitability classes, namely-highly suitable, moderately suitable and poorly suitable and evaluated them for direct and indirect measures of fitness. Populations of M. malabarica at habitat sites predicted to be highly suitable sites by ENM had a significantly greater number of stems and higher regeneration index (number of saplings for every adult) compared to populations in poorly suitable habitat. Further, individuals in highly suitable sites exhibited significantly less fluctuating asymmetry (FA)-an index of greater genetic homeostasis and significantly higher specific leaf weight (SLW)-an index of primary productivity, compared to individuals in the poorly suitable habitats. Finally, the populations in the highly suitable habitats had a significantly greater number of alleles and a larger proportion of private or rare alleles compared to those from less suitable sites. These results for the first time provide an explicit test of the ENM with respect to species’ fitness. We discuss the implication of these results in the context of designing viable species conservation and restoration programmes