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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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ThesisItem Open Access INFLUENCE OF SITE FACTORS ON GROWTH AND PRODUCTIVITY OF Bambusa bambos (L.) Voss(UNIVERSITY OF AGRICULTURAL SCIENCES GKVK BANGALORE, 2001-08-13) INDRESHA, J. H.; Devar, K. V.Evaluation of site factors and their influence in different Forest Ranges is generally aimed at identifying optimum conditions of climatic, topographic and various edaphic factors required to increase the growth and biomass production of Bambusa bambos. Five Forest Ranges of Sirsi Forest Division were evaluated for various growth and yield parameters to assess the composition and structure of bamboo associated forests, the influence of locality conditions and associated species on the growth and yield of Bambusa bambos. The Sirsi Forest Division was characterised by predominance of moist deciduous forest types, where some semi-evergreen (Janamane) and dry deciduous (Banavasi) forest types were also present. The number of species was highest in Janamane (26 species) and least was recorded from Siddapur (20 species). The Sirsi Forest Division characterised by the preponderance of contiguous and random distribution where only Bambusa bambos had regular distribution. Siddapur showed the maximum density of Bambusa bambos (128 clumps / ha) where as the density of associated vegetation was highest in Janamane (288 stems / ha). The species richness and evenness were highest in Janamane and lowest in Siddapur. The growth parameters were positively and non-significantly associated with rainfall. The altitude had a positive effect on growth and yield the effect of slope was negative on growth and yield. Nitrogen and phosphorous were associated positively with all the traits. The same trend was followed by other soil properties viz. pH, electrical conductivity, potassium, calcium, magnesium and organic carbon. All the growth parameters of Bambusa bambos were negatively correlated with number of species, their density and total basal area.ThesisItem Open Access IMPROVEMENT STUDIES IN Garcinia Indica Cholsy.(UNIVERSITY OF AGRICULTURAL SCIENCES GKVK BANGALORE, 2001-08-13) KALLAJE, RAJESH S.; Devar, Prof. K. V.The present study was carried out for the survey, identification and documentation of candidate trees, assessment of the extent of variability among quantitative characters, character association studies among candidate trees and the study of species Interaction with edaphio and geo-ciimatic factors, i he study was taken up in five ranges and from each range, ten trees were selected and from each tree, 50 fruits were drawn at random and variability parameters were studied for various fruit and seed traits, in addition to the morphometric characters. Among the morphometric characters, clear bole showed high co-efficient of va^abi!!^/ followed by crown depth, while fruit yield per tree showed the least co-efficient of variability. The analysis of variability indicated that the growth of the candidate trees was superior among the trees of Yellapur, Sirsi and Kumta in that order. The estimates of variability for different morphometric, fruit and seed parameters indicated a wide array of variation. Broad sense heritabilih/ of 0,847 for tree DBH was found to be highest among the tree parameters while fruit diameter (0.902) and seed thickness (0 750) recorded the highest values for fruit and seed parameters respectively. In case of genetic gain tree DBH (37,705 %), seed and pulp weight (32.666 %) and fresh seed weight (10.416 %) recorded high values. The correlation study for these parameters showed a positive and significant correlation between crown diameter and fruit yield. All the fruit traits showed positive and significant correlation with altitude while the fruit yield exhibited a negative association. Fruit yield showed a positive relation with mean annual rainfall (MAR) while fruit weight and fruit size showed negative associations. The present study indicates that, where fruit yield and fruit size are the primary criteria for the selection of candidate trees it is better to go for the trees in moist-deciduous forests.ThesisItem Open Access PHENOLOGY, REGENERATION AND PROPAGATION STUDIES IN Ougeinia dalbergioides Benth.(UNIVERSITY OF AGRICULTURAL SCIENCES GKVK BANGALORE, 2001-08-13) HAREESH, T. S.; CHANDRASEKHARAIAH, A. M.Ougeinia dalbergioides Is an important deciduous tree possessing good timber and medicinal value. The flowering in this species was reported to be erratic with poor natural regeneration. In this context, an attempt was made to assess present regeneration status in Uttara Kannada district, to explore the problems of poor regeneration related to its phenology and to standardize vegetative propagation technique to conserve the germplasm. One hundred matured individuals were monitored for phenology for 13 months and 32 quadrats of 40 m x 40 m were laid to assess the regeneration. 0. dalbergioides behaves like a late successional spedes of a dry dedduous forest with respect to vegetative phenology. Fruiting in Ougeinia is highly opportunistic, only few flowered individuals produce fruits. The reproductive success was very less (<1.0 %) due to immature fruit predation and seed abortion. Among the weather parameters, rainfall was positively and significantly associated with leaf expansion initiation. The rainfall and relative humidity prevailed during July-August significantly influenced reproductive phenophases. The forest in Bhagawathi range showed speedes composition typical of a dry deciduous forest type where O. dalbergioides was one of the dominant speedes showing a dumped spatial dispersion. 0. dalbergioides occupied position among regenerating individuals constituting 2.89 per cent to the total regenerating individuals. Advance regeneration of O. dalbergioides was virtually absent as indicated by the population structure. Among the various biotic factors, grazing was the prime factor affecting the regeneration of this speedes. Regeneration was negatively assodated with electrical conductivity of the soil. The species showed good root suckering capacity and ail the regenerating individuals seem to be the resultant of the root suckers. The stem cuttings collected during April and treated with Seradix-3% showed a good rooting percentage (35.85) and hence, this treatment may be considered a standard.ThesisItem Open Access INFLUENCE OF SITE FACTORS ON GROWTH OF TEAK STANDS IN THE WESTERN GHATS OF KARNATAKA(UNIVERSITY OF AGRICULTURAL SCIENCES GKVK BANGALORE, 2001-08-10) APARANJI, SHIVAKUMAR L.; CHAJVDRASEKHARAIAH, Dr. A. M.Teak (Tectona grandis Linn, f.) Is one of the most well known and popular timber species of high quality that is grown under varied environmental conditions. To elucidate the effect of rainfall, temperature and a few soil factors, a study was conducted on similar-aged teak plantations (19-20 years old) spread over six bioclimatic zones established by the KFD. Temperature rainfall, all edaphic factors studied and associated vegetation showed a major influence on its growth and yield as indicated by analysis of variance. Performance of teak for various growth and yield measurements were found to be better in the bioclimatic zone IV which was characterized by higher temperature (>23°C) and medium rainfall (1500-2000 mm). Contrast analysis showed that about 61 per cent more growth under zones of higher temperature (II, IV and VI) when compared to lower temperature range (I, III and V) suggesting positive response of teak to higher temperature regime. Similarly higher performance of teak was noticed in medium rainfall zones compared to zones of higher (2000-5000 mm) or lower rainfall (1200-1500 mm). Correlation studies indicated to be negative between bulk density and particle density with growth and yield of teak and positive association with porosity. Most of the chemical properties including soil nutrients have positive effect on the performance of teak. However pH was found to be negatively correlated with the growth parameters. Major soil nutrients viz., available nitrogen, phosphorous and potassium have resulted positive correlation with growth and yield of Teak. Teak stands with higher invasive species show restricted growth than those plantations.ThesisItem Open Access VARIABILITY AND SITE INTERACTION STUDIES IN Dendrocalamus strictus Nees.(UNIVERSITY OF AGRICULTURAL SCIENCES GKVK BANGALORE, 2001-08-10) IQBAL, MAJID; Devar, K. V.ThesisItem Open Access COLLECTION AND EVALUATION OF Solanum viarum Dunal. GERMPLASM FROM CENTRAL WESTERN GHATS OF KARNATAKA(UNIVERSITY OF AGRICULTURAL SCIENCES GKVK BANGALORE, 2001-08-10) NAYAK, BALIRAM G.; PATIL, S. K.ThesisItem Open Access SILVI-GENETICAL STUDIES IN Sapindus trifoliatus Linn.(UNIVERSITY OF AGRICULTURAL SCIENCES GKVK BANGALORE, 2001-08-13) KIRAN KUMAR, A. K.; Devar, K. V.Tree improvement is effective only when it consists of the combination of all silvicultural and tree-breeding skills of the forester to grow the most valuable forest products as quickly as possible and as inexpensively as possible. Phenotypic variability for various characters was assessed for 40 candidate trees of Sspindus trifoliatus Linn, located in aiffarent climatic zones. Association of grov/th traits of candidate trees y/ith locality conditions was determined and analysed. Among morphometrlc characters highest coefficient of variation was found for clear bole (48.50 %) and fruit yield per tree (31.84 %) and among germination parameters, it was found to be highest for germination value (66.08 %). Partitioning of the variability into genotypic and phenotypic components in ail the attributes indicated the prevalence of moderate to high GCV and the differences among GCV and PCV were found to be narrow suggesting the negligible role of the environment among the observed variations. Broad sense heritability was highest for clear bole (0.917) coupled with high genetic gain. The correlation study indicated that the fruit yield increased as crown diameter enlarged and clear bole decreased. High germination was found in big fruits, which had large seeds. Whereas fruit yield, fruit weight and percent germination decreased as altitude increased. Trees from higher moisture regimes had higher fruit weight, seed weight and percent germination, but less fruit yield. However, chemical properties under the trees showed a positive effect on various growth, yield and germination parameters, among which nitrogen and phosphorus had a greater effect on growth and fruit quality. The present study indicated that the genotypes selected from the moist deciduous and coastal zones as best geographic sources and should be given more emphasis for further selection in soaonut.