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

20233
Reset filters
Subject: Forestry × Start date: 2023 ×
Reset filters

Search Results

Now showing 1 - 3 of 3
  • Thumbnail Image
    ThesisItemOpen Access
    ASSESSMENT OF TREE COMPOSITION AND THEIR ROLE IN REGULATING ENVIRONMENT QUALITY IN THE URBAN ECOSYSTEM
    (UNIVERSITY OF AGRICULTURAL SCIENCES BANGALORE, 2023-04-07) ABHILASH K P; DEVAKUMAR A S
    Urban trees provide many ecosystem services, including carbon sequestration, air purification, and biodiversity conservation rendering the atmosphere to remain clean. The present study investigates the diversity of trees that were present in different landscapes such as residential areas, tree avenues, parks, industrial areas, and around the lake in Bengaluru city. A total of 44 tree species belonging to 23 families were found of which, Saraca asoca, Santalum album found among the species are considered as vulnerable and Michelia champaca is endangered in the Karnataka region according to the IUCN red list of tree species. Among the tree species, the highest carbon sequestration per tree was found to occur in Peltophorum pterocarpum and the lowest was in Tabebuia argentea. It is found that dust accumulated on trees present on the roadside due to vehicular movement was more, compared to the roads with less vehicular movement. Similarly, dust produced during pre-monsoon periods was more compared to post-monsoon. Among the dominant tree species found in the urban landscapes, Gravillea robusta recorded the highest photosynthetic rate and the least was recorded in Spathodia companulata. Pongamia pinnata recorded the highest reduction in photosynthesis due to dust deposition while Swietenia mahagoni recorded the least reduction. Based on the physiological response and pollution tolerance levels of the tree species it is found that Swietenia mahagoni has the highest ability to tolerate stress caused by pollution. Thus, growing appropriate tree species in different parts of the urban areas depending on the pollution rates are necessary. Growing trees not only ameliorate climate but can also help in conserving biodiversity and other ecosystem services.
  • Thumbnail Image
    ThesisItemOpen Access
    QUANTIFICATION OF SURFACE WATER CONTAMINANTS FROM AGROCHEMICALS IN RURAL AND TRANSITION ZONES OF BENGALURU
    (University of Agricultural Sciences, Bangalore, 2023-02-15) UDAY KUMAR, S. N.; A. S. Devakumar
    Surface water is a life-saving, limited but easily accessible natural resource essential for the survival of all living organisms. In the case of humans and livestock, it is also essential for food production. Due to urbanization and an increase in the population water scarcity has increased due to contamination. Agriculture inputs are one of the major sources of contamination and the present study is an effort to analyze this in rural and transition zones of Bengaluru, one of the fastest-growing cities in India. In the major fertilizers used by the farmers, it is found that there are high concentrations of heavy metals, especially in zinc sulphate and phosphatic fertilizers compared to urea and ammonium sulphate. The higher levels of arsenic, cadmium, chromium and lead were recorded in zinc sulphate, diammonium phosphate, single super phosphate and muriate of potash. Based on the analysis of the physicochemical properties of water bodies in the agroecosystems it is found that surface water bodies during post-monsoon were found to have excellent to good water quality, while in the pre-monsoon they were found to be excellent to moderate in quality for irrigation. Based on Horton’s assessment surface water in the south and north rural parts of Bengaluru falls into the excellent water quality class. In the transition zone, all the surface water samples from the north and southern parts were in good to excellent water class during the post-monsoon season. Whereas in pre-monsoon, the majority of surface water bodies are found in the good water category. Thus, in general, the water quality of surface water bodies in the agroecosystems of the transitional zone of Bengaluru is more contaminated compared to the rural zone which can be attributed to contamination caused by higher chemical inputs used in agricultural activities in this region.
  • Thumbnail Image
    ThesisItemOpen Access
    ASSESSMENT OF ECOSYSTEM SERVICES UNDER DIFFERENT LAND USE SYSTEMS IN SEMIARID CONDITIONS
    (University of Agricultural Sciences, Bangalore, 2023-02-22) UTHAPPA, A. R.; A. S., Devakumar
    The study was conducted in different land use systems viz., tree plantations (Tectona grandis, Terminalia bellirica, Swietenia macrophylla, Artocarpus hirsutus), natural forest, horticulture (Mangifera indica), agroforestry (Melia dubia) and agriculture at University of Agricultural Sciences, GKVK, Bengaluru. Litterfall patterns, quantity and quality varied among the tree based ecosystems. Highest litter accumulation was recorded under A. hirsutus and least under T. grandis. The litter decomposition rate was higher in T. grandis and T. bellerica compared to A. hirsutus and S. macrophylla while in natural forest it was moderate in nature. Among the abiotic factors rainfall is found to be more crucial for litter decomposition. The initial litter chemistry content varied between the species and also the concentration of nutrients in the litter varied considerably with time among the tree species. The soil physico-chemical and biological properties varied between the systems. Dehydrogenase activity, available potassium, pore space and iron content emerged as critical soil traits. Based on soil quality index, land use systems are in the following descending order; natural forest followed by S. macrophylla, agroforestry, T. bellirica, T. grandis, A. hirsutus, agriculture and horticulture systems. The soil and litter fauna found to vary among the land use systems. The influence of abiotic and biotic factors on litter mineralization and nutrient release is found to occur because of the changes seen in litter and soil fauna. Further, the quantity of mineral nutrients released upon mineralization of litter is not sufficient to sustain desired levels of major nutrients in the soil. Thus, even under undisturbed tree based land use systems soil nutrient content are low under the semiarid climatic conditions, indicating the susceptibility of soils. Under the predicted climate change scenarios, the conditions may lead to desertification, and therefore need management interventions for undisturbed natural forests, and certainly for arable land.