Thumbnail Image

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.

Browse

20171
Reset filters
Subject: Plant Pathology × Author: ABHILASH × End date: 2017 × Start date: 2012 ×
Reset filters

Search Results

Now showing 1 - 1 of 1
  • Thumbnail Image
    ThesisItemOpen Access
    STUDIES ON Alternaria BLIGHT OF SUNFLOWER
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2017-08-23) ABHILASH; Karuna, K.
    Sunflower is an important oilseed crop of India. The crop suffers from many diseases of which Alternaria leaf blight is important. Alternaria helianthi was isolated from the leaf samples collected during kharif, rabi and summer. In all the three seasons mixed infection of A. helianthi and A. alternata was observed. Cultural studies revealed that highest radial growth was observed on Richard’s and potato dextrose agar, but profuse sporulation was in host leaf extract + sucrose and host leaf agar. Maltose and potassium nitrate were the best carbon and nitrogen sources respectively that showed maximum growth. Profuse sporulation was noticed in case of sucrose and glucose as carbon sources whereas potassium nitrate was ideal nitrogen source. Physiological studies revealed 25oC as the optimum temperature for growth whereas slightly acidic pH (6-7) showed maximum mycelial dry weight of A. helianthi. The PCR amplification and sequencing of ITS rDNA region confirmed both A. helianthi and A. alternata as the cause of leaf blight. Among the combi fungicides Propiconazole + Difenoconazole at 0.1 per cent; systemic fungicide Azoxystrobin and Propiconazole at 0.075 and 0.1 per cent; nano molecules silver colloidal particles at 250 ppm were found to be superior in inhibiting growth. Screening of nine AHT and seventeen IHT coordinated trial entries of sunflower genotypes against Alternaria helianthi under natural field conditions revealed that, seven entries were moderately resistant while all other entries were found susceptible to Alternaria leaf blight.