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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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19721
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Subject: Soil Science and Agriculture Chemistry × End date: 1972 × Thesis Type: Ph.D ×
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Now showing 1 - 4 of 4
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    ThesisItemOpen Access
    CLAY MINERALOGY OF SOME SOILS OF MYSORE STATE IN RELATION TO PHOSPHATE FERTILISATION AND ION-EXCHANGE PROPERTIES
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BANGALORE, 1972) BIDDAPPA, C C; Perur, N G
    ABSTRACT NOT AVAILABLE
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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.
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    ThesisItemOpen Access
    Studies on carbon and nutrient dynamics in different land use systems of a watershed in the western ghat
    (University of Agricultural Sciences, Bengaluru, 06-05-13) K. M, Shivakumar; S. S, Prakash
    The changes in land use systems from natural vegetation to different manmade land use systems influence the physical, chemical and biological properties of soil. Hence, investigation was carried out to study the carbon and nutrient dynamics in different land use systems in a watershed of WesternGhat of Karnataka. The land use systems selected for the study consisted both manmade systems (Agriculture: paddy; Horticulture: coffee,arecanut, tea and banana); forest plantation (accacia and teak) and natural systems (Evergreen, semi-evergreen and grassland).Both litter and soil samples were collected during pre and post monsoon seasons were analysed for various parameter. Litter production among the land use systems was in order of grassland (2.48 t ha-1) < banana (2.50 t ha-1) arecanut (4.45 t ha-1) < acacia (4.85 t ha-1) < tea (5.15 t ha-1) < evergreen forest (6.47 t ha-1). The litter of evergreen forest had significantly higher carbon content (52.73 %), consequently potential C returned (3411 kg ha-1) was higher. The nitrogen (2.50%),phosphorous(0.45%) and potassium (1.75%) content was higher in coffee litter. The soil under evergreen and semi-evergreen forestand coffee, had lower bulk density and higher MWHC,SOC (2.73%, 2.57% and 2.47%), TOC, SMB-N andavailable nitrogen and phosphorus and micronutrient status compared to soils under other land use. The evergreen land use systems recorded higher dehydrogenase and acid phosphatase activity followed by semi-evergreen and coffee, while urease activity was significantly higher in coffee land use system. Soil organic carbon showed positive and significant correlation with TOC, TN, TP, TK SMB-C SMB-N,dehydrogenase and acidphosphatase activity.The land use systems influenced organic carbon and nutrient dynamics in soil due to differential litter turnover as well as organic matter and nutrient added from external source.
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    ThesisItemOpen Access
    Studies on the effect of repeated application of human and cattle urine on soil properties, growth and yield of vegetable crops
    (University of Agricultural Sciences, Bengaluru, 07-04-12) H, Yogeeshappa; C. A, Srinivasamurthy
    In order to find the ways and means of utilizing human urine and cattle urine as liquid fertilizer for crop production and to assess the effect on soil properties, growth and yield of vegetable crops, experiments were carried out under laboratory, field and green house conditions from 2009 to 2011. The urine from persons of different age group and diet and different categories of cattle was characterized and changes in chemical composition when incubated under open and closed conditions was mentioned. Field experiment was conducted in farmer’s field with ashgourd, french bean, pole bean and pumpkin as test crops and 14 treatment combinations at Nagasandra village, Doddaballapur, Bangalore rural district to study the effect of repeated application of human urine and cattle urine on soil properties, growth and yield of vegetable crops. In a green house experiment effect of higher doses of human urine and cattle urine on growth and yield of tomato in red, laterite and black soils was studied. The fresh urine from persons of vegetarian and non-vegetarian diet and of different age groups and of different categories of cattle were acidic in reaction, had appreciable amount of soluble salts, primary and secondary and micronutrients. Urine from non-vegetarians had more nutritive value when compared to vegetarians. Upon incubation, nitrogen concentration decreased but there was no much variation in phosphorus and potassium concentration. The pH of urine samples of all category turned to alkaline reaction with time. In the field experiment, application of recommended dose of nitrogen through human urine in three split doses plus gypsum recorded higher yield (39.2, 14.2, 17.4 and 38.7 t ha-1, for ashgourd, french bean, pole bean and pumpkin grown sequentially), growth and yield parameters, nutrients uptake, soil available nutrients, soil microbial population and B:C ratio as compared to other treatments. In the green house experiment, application of 2 times the recommended dose of N through human urine to red and laterite soils recorded higher tomato fruit yield (3.6 and 3.4 kg plant-1, respectively), growth and yield parameters, quality components, nutrients uptake, soil available nutrients and soil microbial population as compared to other treatments. In black soil, all these components were found significantly higher in treatment receiving 2 times the recommended dose of N through chemical fertilizers as compared to other treatments.