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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: Plant Pathology × Author: D, Sridhar × End date: 2017 × Start date: 2012 × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    Identification of races, biovars and management of ralstonia solanacearum causing wilt of solanaceous crops with special reference to chilli (Capsicum annuum L.)
    (University of Agricultural Sciences, Bengaluru, 2013-01-29) D, Sridhar; Nagaraju
    Production of solanaceous vegetables crops like tomato, chilli, brinjal and potato has been seriously affected by bacterial wilt caused by Ralstonia solanacearum. In the present investigation, 28 isolates of R. solanacearum collected from different agro-climatic regions from chilli, tomato, brinjal and potato of Karnataka and Kerala. All 28 isolates infected the solanaceous crops (chilli, tomato, brinjal and potato) but none of them infected ginger, mulberry and banana. All the isolates induced a dark brown necrotic lesion on capsicum leaves 48 h after inoculation. All the isolates oxidised and utilized the disaccharides and sugar alcohols indicating that they belong to race-1 and biovar-III. Ujwala and Anugraha varieties of chilli were highly resistant to the bacterial wilt under greenhouse studies. Under field conditions, Ujwala was highly resistant and Anugraha was resistant with 4.54 and 5.55 per cent disease incidence (PDI), respectively during Kharif 2011 and summer 2012. K-cycline was highly effective with maximum inhibition zone (30.88 mm) followed by cephalaxin and paushamycin under in vitro. Among botanicals, isabgol seed extract was highly effective with 26.42mm mean inhibition zone followed by, garlic bulb extract (20.15mm). Pseudomonas fluorescens was highly effective with inhibition zone of 25.77mm followed by Bacillus subtilis (19.23 mm). Field trials during kharif 2011 on chilli variety Byadgi kaddi revealed that, combined application of K-cycline and P. fluorescens found best with least PDI of 14.27 at 95 days after transplanting (DAT). K-cycline + P. fluorescens recorded maximum 100 fruit weight (390.15g), number of fruits/plant (30.15) and green chilli yield (6.08 t/ha). During summer 2012, combined application of K-cycline + P. fluorescens was highly effective with least PDI of 16.67 at 95 DAT. Combined application of K-cycline + P. fluorescens was highly superior for yield parameters with maximum fruit weight (387.80g), number of fruits/plant (30) and green chilli yield (5.98 t/ha).