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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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2010 - 201648
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Subject: Plant Pathology × End date: 2016 × Start date: 2010 × Thesis Type: M.Sc ×
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Now showing 1 - 9 of 48
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    ThesisItemOpen Access
    STUDIES ON Macrophomina phaseolina (Tassi) Goid CAUSING DRY ROOT ROT DISEASE OF CHICKPEA {Cicer arietinum L.)
    (University of Agricultural Sciences GKVK, Banglore, 2012-07-19) GOWDRA, NAGAMMA; M. SAIFULLA
    No Abstract
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    ThesisItemOpen Access
    STUDIES ON ANTHRACNOSE DISEASE OF POMEGRANATE {Punica granatum Linn.) CAUSED BY Colletotrichum gloeosporioides (Penz.) Penz. and Sacc.
    (University of Agricultural Sciences GKVK, Banglore, 2010-08-13) SAHIB, SHAH SAYAD; NAGARAJU
    No Abstract
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    ThesisItemOpen Access
    STUDIES ON YELLOW MOSAIC VIRUS DISEASE OF SOYBEAN [Glycine max (L.) Merrill.]
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2016-08-08) NAVEESH, Y. B; Prameela, H. A
    Soybean yellow mosaic virus (SYMV) disease caused by a begomovirus is a major constraint in soybean cultivation in Karnataka. SYMV was successfully transmitted through whitefly (Bemisia tabaci). Hundred per cent virus transmission was obtained by using ten adult whiteflies per plant with 12 hr of acquisition access period (AAP), inoculation access period (IAP) and incubation period. One week old soybean plants were susceptible for SYMV infection. SYMV was successfully transmitted to soybean, horse gram, french bean, pole bean, lima bean, green gram and rice bean. The virus was detected by polymerase chain reaction (PCR) technique using viral coat protein (CP) and movement protein (MP) gene specific primers. PCR product of 1000 and 900 bp sized corresponding to CP and MP genes of the virus were amplified from total DNA obtained from SYMV infected leaf tissue. The nucleotide sequences of the CP and MP genes showed maximum nucleotide identity of 98 per cent and 99 per cent respectively with horse gram yellow mosaic virus (HgYMV) isolates infecting french bean and lima bean. Phylogenetic analysis of the sequences of CP and MP genes of SYMV revealed that virus isolate (GKVK) clustered with HgYMV infecting french bean and lima bean isolates of Bengaluru, which indicate that the virus causing SYMV disease is a strain of HgYMV. Out of forty three genotypes of soybean screened for SYMV under glass house condition, eleven genotypes viz., KDS-378, RKS-118, Bragg, DS-2706, DSb-25, Dsb-23, MAUS-2, DSb-21, DS-2708, DS-2006 and DS-2707 were found moderately resistance to SYMV.
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    ThesisItemOpen Access
    BIO-MANAGEMENT OF BLAST OF FINGER MILLET (RAGI) CAUSED BY Pyricularia grisea (Cke.) Sacc.
    (2016-07-26) RAKESHA; Narendrappa, T
    Finger millet is an important millet crop of southern Karnataka, affected by blast disease that causes yield loss up to 50 to 60 per cent. A total of 35 bacterial and six fungal antagonistic organisms isolated from finger millet phyllosphere were identified as species of Pseudomonas, Bacillus and Trichoderma based on the cultural, morphological and biochemical tests. In vitro evaluation of phyllosphere microflora against P. grisea revealed that Bacillus isolates B13, B3, RBs1, B7 and Pseudomonas isolates P2, P17, P22, RPf1 and T. harzianum (Th3) recorded maximum inhibition of 66.79, 66.41, 66.29, 59.35, 62.24, 52.16, 50.16, 50.09 and 56.60 per cent respectively. Bacillus isolate B13 found potential against P. grisea which was further identified as Bacillus amyloliquefaciens based on 16S rRNA sequence. and these isolates were tested for their efficacy under pot culture. Foliar spray of P. fluorescens (RPf1) recorded minimum PDI of leaf (30.46), neck (1.59) and finger (3.12) blast besides maximum plant growth promotion in-terms of shoot (106.20 cm) and root length (42.83 cm) which was on par with B. amyloliquefaciens and T. harzianum. Further, field evaluation of these bioagents revealed that Seed treatment + Seedling dip + Foliar spray with P. fluorescens RPf1 recorded minimum PDI of leaf (19.49), neck (1.42) and finger blast (1.26) with maximum growth promotion i.e. shoot length (99.10 cm), fresh shoot weight (45.33 g), grain yield (1900 kg ha-1) and straw yield (5375 kg ha-1) followed by B. amyloliquefaceins confirming usage of bioagents in the management of finger millet blast. .
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    ThesisItemOpen Access
    INVESTIGATIONS ON SEED MYCOFLORA OF MUNG BEAN (Vigna radiata L.)
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2016-07-26) DEVAMANI, B. D; Saifulla, M
    Mung bean seeds are infected by various organisms affecting germination, leading to yield loss. Eighteen mung bean seed samples collected from thirteen districts of Karnataka were tested for mycoflora by employing standard blotter method which revealed the association of twelve fungi viz., Aspergillus niger, Alternaria alternata, Aspergillus flavus, Aspergillus candidus, Penicillium notatum, Rhizopus stolonifer, Cladosporium sp., Fusarium oxysporum, Mucor sp., Curvularia lunata, Macrophomina phaseolina and Chaetomium globosum. Seed samples collected from Kalaburagi, Raichur and Bagalkot districts recorded the highest mycoflora. Seeds of mung bean genotypes grown in kharif recorded highest association of seed mycoflora compared to rabi. Among different incubation methods employed, blotter method was found ideal in enumerating seed mycoflora. Location of mycoflora in mung bean seeds showed that A. flavus was confined to both seed coat and cotyledons, whereas Fusarium to embryo. Survival of mycoflora on mung bean seeds revealed that field fungi decreased after eight months of storage whereas storage fungi increased. Hot water treatment at 40 °C for 30 minutes was found best in managing seed mycoflora followed by solar heat treatment and dry heat treatment. Seed treatment with captan at the rate 4 g kg-1 of seed significantly reduced seed mycoflora (78.68 %). Seed treatment with Trichoderma harzianum at the rate of 8 g kg-1 of seed reduced the seed mycoflora up to (69.63 %) followed by Pseudomonas fluorescences (66.49 %) and T. viride (64.39 %).
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    ThesisItemOpen Access
    STUDIES ON PHYLLODY DISEASE OF SESAMUM (Sesamum indicum L.) AND MANAGEMENT
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2016-07-26) MAHADEVAPRASAD, T. N; Karuna, K
    Phyllody caused by phloem limiting phytoplasma is a very serious disease in most sesamum growing areas of Southern Karnataka. Sesamum phyllody is gaining importance in recent years because it causes an yield loss of upto 100 per cent. During survey phyllody infected plants showed excessive stunting, severe reduction in leaf size, reduced internodal length, excessive axillary proliferation and floral malformation like abnormal green structures in place of normal flowers. The incidence of sesamum phyllody ranged from 13.6 to 31.21 per cent during survey in sesamum growing areas of Southern Karnataka. The disease incidence was lowest in Ramanagar district with incidence of 13.6 per cent. Hassan district recorded the highest incidence of 31.21 per cent. Three genotypes showed resistant reaction, 27 genotypes showed moderately resistant reaction and 13 genotypes showed susceptible reaction against the phyllody disease under field conditions. Management of sesamum phyllody through two dates of sowing and vector (leafhopper) control revealed that lowest disease incidence (22.90 per cent) was observed in late sown crop compared to early sown crop (25.43 per cent). Seed yield was maximum (266.24 kg/ha) in late sown crop compared to early sown crop (249.15 kg/ha). Of the different treatment combinations, late sowing with seed treatment with imidacloprid 70 WS @ 5 g/kg + spray of acetamiprid 20 % SP @ 0.3 g/L and late sowing with seed treatment with imidacloprid 70 WS @ 5 g/kg + spray of imidacloprid17.8 % SL @ 0.5 ml/L at 20 days interval significantly reduced the disease incidence (18.51 and 19.78 per cent) and increased seed yield of 315.77 and 303.61 kg/ha respectively.
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    ThesisItemOpen Access
    EVALUATION OF BLACK GRAM, Vigna mungo (L.) Hepper GENOTYPES FOR RESISTANCE AGAINST POWDERY MILDEW CAUSED BY Erysiphe polygoni DC.
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2016-07-25) MALAPPA, S. KOHALLI; Somasekhara, Y. M
    Powdery mildew disease caused by Erysiphe polygoni DC. is a major constraint in the black gram cultivation, causing both quantitative and qualitative losses (40-90%). Development of resistant cultivars plays an important role in management of powdery mildew. An attempt was made to identify resistant sources of black gram genotypes against powdery mildew. Of 188 genotypes screened under field (rabi & kharif) and glass house conditions, the lowest disease severity was observed in resistant genotypes viz., LBG-17 (7.64 & 7.5%), IC-281977 (5.5 & 5.8%) and RASHMI (5.0 & 5.2%) under field conditions during kharif and glass house conditions respectively. Two resistant genotypes viz., LBG- 17 and RASHMI showed disease severity of 5.80% during rabi. The disease severity of moderately resistant genotypes viz., LBG-626 (20.9, 18.1 & 20.5%), KU-5-527 (17.9, 16.8 & 18.8%) and IC-546468 (17.5, 19.1 & 19.0%) under field (rabi & kharif) and glass house conditions respectively. The amount of phenols, peroxidase, polyphenyl oxidase, chitinase and phenylammonia lyase content in infected leaves of resistant genotypes viz., LBG-17, IC-281977 and RASHMI was 7.21, 7.62, 7.63 mg/g LFW; 6.34, 4.71, 5.37 mg/g LFW; 5.12, 4.67, 4.92 mg/g LFW; 152.0, 166.0, 176.0 mMol/g LFW and 2.51, 2.43, 2.01 mg/g LFW respectively was more compared to the infected leaves of susceptible genotypes. Accumulation of total sugar less in infected leaves of resistant genotypes ranged from 155- 162 μg/g LFW compared to susceptible resistant genotypes (295-300 μg/g LFW). The resistant genotypes would be used for further breeding programmes to develop resistant black gram varieties against powdery mildew.
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    ThesisItemOpen Access
    INTERACTION OF ROOT-KNOT NEMATODE (Meloidogyne incognita) AND FUNGAL (Fusarium oxysporum) WILT COMPLEX IN GERBERA UNDER PROTECTED CULTIVATION
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2016-07-23) GURURAJ, HAWALDAR; Reddy, B. M. R
    Gerbera is the fifth most used cut flower in the world and has tremendous demand in both domestic and international markets. A combination of Meloidogyne incognita with Fusarium oxysporum results in wilt complex in gerbera. The present studies were undertaken to isolate, proving the pathogenicity and interaction of M. incognita with F. oxysporum on gerbera, to screen available cultivars of gerbera against both the pathogens individually as well as in combination and the management of wilt complex using bioagents, neem cake and chemicals under glass house condition. Based on the morphological studies, fungus was identified as F. oxysporum and M. incognita. All growth and yield parameters recorded lowest and wilt incidence was maximum with inoculation of F. oxysporum 15 days after inoculation of M. incognita. Among the seven popular cultivars of gerbera screened against M. incognita and F. oxysporum wilt complex, Julia and Rionegro were found resistant, Nigela was moderately susceptible while, Havana, Teresa, Marinilla and Kyllian were susceptible. Drenching with Carbendazim 0.1 per cent along with soil application of Carbofuran 3G 16 g/m2 recorded 90 per cent reduction in wilt incidence over untreated check. It was found effective in reducing the number of galls, egg mass, root-knot index, nematode population and improving the plant growth and yield parameters as compared to untreated check. However, neem cake and all bioagents showed significant reduction in wilt incidence, nematode parameters and increase in growth and yield parameters.
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    ThesisItemOpen Access
    INVESTIGATIONS ON ROOT-KNOT NEMATODE (Meloidogyne incognita) ASSOCIATED WITH BLACK GRAM (Vigna mungo L.)
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2016-07-23) HARILAL, D. M; Ravichandra, N. G
    Root-knot nematode (Meloidogyne incognita) is a serious pest of pulse crops and is a major limiting factor in the production of black gram in many parts of the country, including Karnataka. Use of chemicals to manage nematodes affects soil bio-diversity and environment besides their residual toxicity. The present studies were undertaken to survey for the occurrence of root-knot nematode in major pulse growing areas in southern Karnataka districts, screening of available varieties/cultivars of black gram against rootknot nematode and effect of root knot nematode on nodulation, growth and yield parameter in black gram. In the field survey, predominant occurrence of total soil and root population of M. incognita (657/200cc soil and 71/5g of root) followed by Helicotylenchus sp.(70 and 15), Rotylenchulus sp. (30 and 28) and Pratylenchus sp. (22 and 17) were noticed in Chamarajanagar district followed by Tumkuru. Screening of fourteen black gram cultivars viz., 2KU-60, ADT-05, BG-2, DU-1, G-333, IC-282007, IC-436545, K-5-572, KU-8-155, LKU-64, RASHMI, RU10-601, SU-509 and UH-04-04 under glass house condition, revealed that UH-04-04 was more susceptible and G-333 was resistant to M. incognita. M. incognita infection significantly reduced the number of rhizobial nodules, nitrogen content, root length, shoot length, pod number and plant weight. A greater reduction was observed when the M. incognita was established before the inoculation of the Rhizobium than the M. incognita and Rhizobium inoculated together or when the Rhizobium was established before the inoculation of M. incognita.