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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: Forestry × Author: PRASANNA KUMARA, M × End date: 2017 × Start date: 2012 ×
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    ThesisItemOpen Access
    STUDIES ON DECOMPOSITION OF LEAF LITTER AND NUTRIENT DYNAMICS OF Simarouba glauca AND Calophyllum inophyllum AGRO-FORESTRY TREE SPECIES
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2015-02-24) PRASANNA KUMARA, M; Hattappa, S
    Field experiment, “Studies on decomposition of leaf litter and nutrient dynamics of Simarouba glauca and Calophyllum inophyllum agro-forestry tree species” was conducted at GKVK, Bengaluru and ARS Hassan during winter and summer 2014-15. The experiment comprising of sixteen treatments consisting of two tree species, two depths, two locations in two seasons, laid out in factorial RCBD with three replications. The leaf litter production quantified for two seasons during winter and summer (November to April 2015) in Simarouba and Calophyllum at two locations revealed that the highest leaf litter fall was recorded during winter in Simarouba (24.33 kg tree-1 month-1) and lowest in Calophyllum (2.7 kg tree-1 month-1) during summer. The microbial activities showed significant differences at 90 days after leaf litter decomposition in two tree species. The urease (102.09 μg NH4 -1 g-1 soil 2hr-1), DHA (112.6 μg TPF g-1 soil day-1) and phosphatase (29.2 and 23.3 μg PNP g-1 soil) activity was recorded highest in Simarouba plantation compared to Calophyllum plantation. The available soil nutrients were significantly higher at 90 days after leaf litter decomposition in Simarouba plantation (N-193.8 kg ha-1, P-32.6 kg ha-1, K-362.6 kg ha-1 and S-29.7 ppm) compared to Calophyllum plantation (N- 174.5 kg ha-1, P-25.6 kg ha-1, K-246.41 kg ha-1 and S-24 ppm), respectively. The Simarouba tree species litter had a higher initial nutrient content and released its nutrients faster with higher proportion than the Calophyllum tree thus significantly higher soil fertility was obtained in Simarouba agro-forestry system.