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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: Soil Science and Agriculture Chemistry × Author: I, Rashmi × End date: 1972 × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    Development of phosphorus saturation indices for some selected soils of India
    (University of Agricultural Sciences, Bengaluru, 11-10-13) I, Rashmi; V. R, Ramakrishna Parama
    The degree of P saturation (DPS) approach includes quantity and intensity parameter and thus plays an important role in estimating the potential capacity of soils to release P into environment. The investigation on “Development of phosphorus saturation indices for some selected soils of India” was carried out using Jabalpur, Delhi, Bangalore and Trivandrum soils with an objective of developing DPS indices using different extractants namely Olsen, Bray1 and 2, Mehlich3, AB-DTPA and Ammonium Oxalate to understand P movement and loss from agricultural soil. The four selected soils were incubated at 0, 25, 50, 100, 150, 200, 400 and 800 % of P sorption maxima and used for developing DPS indices with different extractants, column and pot study using maize as test crop. The experiment was undertaken during 2011-12 with complete randomized design including eight treatments and replicated thrice. The critical threshold DPS Ol-1, DPS M3-3, DPSA.O.-1 for Jabalpur and Delhi soil was 52.67 37.52, 19.9 % and 29.09, 15.57, 8.60 % resulting in reactive P (RP) concentration of 0.55 and 0.3 μg ml-1. Similarly, DPS By 1-1 DPS M3-2, DPSA.O.-1 for Bangalore and Trivandrum was 33, 128, 11.2 % and 45.92, 169.12, 10.21 % resulting in RP concentration of 0.12 and 0.14 μg ml-1. The environmental STP like WEP and CaCl2-P showed better correlation with RP concentration in leachate as compared to agronomic STP (Olsen, Bray, M3P, ABDTPA). The threshold value of DPS Ol-1, DPSA.O.-1 and DPS M3-3 for crop yield in Jabalpur and Delhi soils were 20.47, 11.7 and16.01 percent and 3.1, 1.22 and 2.51 per cent respectively. In case of Bangalore and Trivandrum soils threshold DPS M3P-2, DPS By1-1 and DPS A.O.-1 for yield was 4.94, 6.8 and 4 percent and 10.3, 16.18 and 6.66 per cent respectively.