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

20015
Reset filters
Subject: Forest Biology and Tree Improvement × End date: 2007 ×
Reset filters

Search Results

Now showing 1 - 5 of 5
  • Thumbnail Image
    ThesisItemOpen Access
    REPRODUCTIVE BIOLOGY AND CONSERVATION OF SEMECARPUSKATHALEKANENSISi A THREATENED SWAAIF TREE SPECIES OF CENTRAL WESTERN GHATS
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK BANGALORE, 2001-08-13) RAGHU, H. B.; VASUDEVA, R.
  • Thumbnail Image
    ThesisItemOpen Access
    CLONAL VARIATION FOR REPRODUCTIVE TRAITS IN A TEAK (Tectona grandis Linn. f.) SEED ORCHARD
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK BANGALORE, 2001-08-13) HANUMANTHA, . M.; VASUDEVA, R.
  • Thumbnail Image
    ThesisItemOpen Access
    MANAGEMENT OF ROOT ROT OF Casuarina equisetifolia Linn.
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK BANGALORE, 2001-08-13) PATIL SANTOSH, H.; NAIK, S. T.
    Casuarina equisetifolia is a fast giowing tree species extensively grown in the coastal regions of South India because of its multifarious uses. Among various biotic factors which limit the successful establislunent and production of the crop, root rot caused by Macrophomina phaseolina (Tassi) Goid. is one of the important diseases. Survey conducted for root rot indicated that disease incidence was moderate in nurseries where as the plantations of less than six years recorded the highest incidence (46.55 per cent). Less annual rainfall coupled with lesser number of rainy days favoured tlie disease development. Based on the moiphological cliaracters of the pathogen and the typical symptoms produced, the causal organism was identified Macrophomina phaseolina. Analyses of physical and chemical properties of the soil collected from different plantations indicated that plantations with higher sand content (83.72 per cent) and C: N ratio manifested higher disease incidence (7.01). Antagonistic organisms tried under in- vitro conditions revealed that Trichoderma viride and T. harziamum completely inhibited the growth and development of M phaseolina.Experiment conducted to test tJie efficacy of antagonists under nurseiy conditions indicated that the treatment with M. phaseolina (J2) showed lowest per cent seedling emergence (35.75 per cent) compared to that of control. However, addition of antagonistic organisms such as T. viride either through soil application or seed pelleting restored the seedling emergence to the level of control. Per cent survival of the seedlings at regular interval of six weeks indicated that the treatment (T2) with pathogen showed lowest survival. while the treatment (T^) with T. vinde (through soil application) recorded the highest survival. Survival of seedlings in T3 was higher by 6.33, 31.81 and 60.5 per cent over T2 after six. twelve and eighteen weeks, respectively. Seedling parameters such as height, shoot length and root biomass were greatly influenced by the application of antagonists. Population estimation after eighteen weeks of incoiporation of the treatment revealed that the population of M. phaseolina increased by 120 folds, while the population of Trichoderma spp and Pseudomonas fluorescens increased by six to seven and eight to thirteen folds, respectively.
  • Thumbnail Image
    ThesisItemOpen Access
    GENETIC VARIATION FOR PHENOLOGY IN A CLONAL SEED ORCHARD OF TEAK (Tectona grandis Linn, f.)
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK BANGALORE, 2001-08-13) PANDURANGA GUNAGA, RAJESH; VASUDEVA, Dr. R.
    To elucidate clonal variations for phenology and its association with low fruit product'O" among teak Clonal Seed Orchards (CSOs), a study was conducted in a 19 year old CSO for a period of 13 months at Manchikere. Yellapura forest division. Inter-clonal differences among 24 teak clones for all phonological initiation events were significant suggesting a strong genetic basis. Strong provenance effect on phenology was also observed. Clones from central and southern provenances were early in initiating flower buds, flowers and peak flowering than those from northern. An overlap index to calculate the flowering synchrony among clones was developed for the first time. Clones of different provenances showed asynchronous flowering while there was a higher synchrony among clones within a provenance. Hence simple geographical continuity of clonal origin could be considered as a thumb rule while selecting clones for CSO. Partial flowering synchrony among clones can potentially violate panmixis and hence all the assumptions of establishing a CSO. Matured non-flowering rametes within a teak clone can also reduce fruit production of a CSO. This trait was genetically controlled and clones derived from older ortets tend to have higher per cent of non-flowering rametes. In general, time of initiation for all phenophases showed higher broad sense heritability, suggesting that these initiation events were controlled by genetic factors. However, durations of all phenophases were environmentally regulated. The highest genetic gain was (27.78%) obtained for time of leaf flush initiation. Clones that initiated leaf flushing early and possessed longer peak-flowering duration tend to produce higher number of fruits per inflorescence. Hence these two traits should be considered while selecting trees for CSO in order to increase the fruit yield. However, clones that coincide flowering with peak rainy days tend to show lower fruit set and hence should be avoided.
  • Thumbnail Image
    ThesisItemOpen Access
    PROVENANCE VARIATION FOR FRUIT, SEED AND SEEDLING TRAITS IN Albizia lehbek L. (Benth.) FROM KARNATAKA
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK BANGALORE, 2001-08-13) ABDUL HASEEB, MOHAMMED; VASUDEVA, R.
    Twelve sources of Albizia lebbek from diverse bioclimatic zones of Kamataka, were evaluated for pod, seed and seedling parameters. Geographic sources differed significantly for all pod, seed, and seedling traits. Pods of Mysore provenance were longest, widest and had higher mass but seeds showed lowest germination (6.66%). Maximum germination (30.67%) and shoot length (5.85cm) were found in Bidar collections. Seedlings from Dharwad source exhibited higher number of leaves, higher shoot dry weight and moderate Shoot Vigour Index (SVI). The CV was highest for germination value (129.16%), and lowest for test weight (16.48%). Among seedling traits, CV was highest for RVI (46.80%). Broad sense heritability was highest for number of leaves/plant (0.795) and lowest for root dry weight per plant (0.20), the genetic gain was highest for peak germination value (65.93%). Pods with longer length, width and weight possessed higher test weight and weight of good seeds. Genotypes with higher germination possessed higher root length, shoot length and more number of leaves. Similarly, the seed sources with higher test weight produced longer roots, more number of leaves and higher shoot mass. This suggests that vigour expressed during seed germination may translate into higher biomass. Hence germination percentage can be relayed for selection of seedling height. Many pod traits strongly responded to rainfall than to any other geoclimatic feature. Seed germination, collar diameter and shoot dry weights were positively associated with mean annual rainfall. Principal Component Analysis identified that SVI, per cent seed germination and RVI contributed maximum to the divergence of the populations (66.53%). Based upon the fruit, seed and seedlings traits seven broad provenances of Albizia lebbek were identified, perhaps for the first time in Kamataka.