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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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20151
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Subject: Soil Science and Agriculture Chemistry × Author: ANITHA, M. S × Type: Thesis ×
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    ThesisItemOpen Access
    EVALUATION OF DIFFERENT DIATOMITE COMPOUNDS ON SOIL PROPERTIES, GROWTH AND YIELD OF AEROBIC RICE
    (UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2015-11-04) ANITHA, M. S; Prakash, N. B
    An incubation, green house and field experiments were conducted to know the effect of different grades (DE-1, DE-2, DE-3, DE-4 and DE-5) and levels (250, 500, 750, 1000 and 1500 kg ha-1) of diatomite (DE) on soil properties, growth and yield of aerobic rice in acidic (Hassan) and alkaline (Mandya) soil. The study revealed that, there was a significant increase in pH of acidic and decrease in pH of alkaline soil compared to control irrespective of application rates of DE under field capacity was recorded over the incubation period. Among the different grades, DE-3 and DE-4 recorded significantly higher acetic acid-Si and CaCl2-Si content at 30 days after incubation in both the soils. Irrespective of different grades of DE, increased rate of application increased the N, P2O5, K, Ca, Mg and S in both the soils. In a pot culture experiment, significantly better performance of rice, increase in the availability and uptake of Si by rice was noticed with the application of DE-4 @ 750 kg ha-1 and DE-4 @ 1000 kg ha-1 in acidic and alkaline soil, respectively. The results of field experiment revealed that, application of DE-4 @ 750 kg ha-1 and DE-3 @ 500 kg ha-1 recorded higher yield of aerobic rice at Hassan and Mandya, respectively. Application of DE-3 @ 500 kg ha-1 and DE-4 @ 750 kg ha-1 recorded higher content and uptake of Si and all other nutrients by rice straw at both the locations. Lower BD and high percentage of maximum water holding capacity and water stable aggregate were recorded with the application of DE-3 @ 500 kg ha-1 at Hassan and DE-4 @ 500 kg ha-1 at Mandya. In a green house with moisture stress experiment, application of DE-4 @ 300 kg ha-1 at 100 per cent FC recorded significantly higher straw weight and leaf relative water content, decreased proline content and electrolyte leakage in both acidic and alkaline soil. Treatment receiving DE-4 @ 300 kg ha-1 at 100 per cent FC recorded higher content and uptake of Si and other nutrients by rice straw in both the soils compared to 100 and 50 percent FC alone.
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    ThesisItemOpen Access
    DISTRIBUTION OF BORON IN SOME IDENTIFIED SOILS AND LAND USE SYSTEMS OF KARNATAKA
    (University of Agricultural Sciences GKVK, Bangalore, 40865) ANITHA, M. S; ANIL KUMAR, K. S
    A study was conducted with the objectives of determination of plant available boron content in major soil types and cropping systems of Karnataka, to quantify the chemical fractions of boron and to study their adsorption behaviour. For assessing available boron status in soils of Karnataka, samples were drawn from the dominant soils representing the map units of 1:250,000 scale Soil Map of Karnataka State. For the studies chemical fractions of boron in soils and adsorption behaviour, soil samples have been collected from different agroclimatic zones of Karnataka representing major soils and cropping systems: Northern dry zone, Central dry zone, Eastern dry zone, Southern dry zone, Southern transitional zone, Northern transitional zone, Hilly zone and Coastal zone. Northern dry zone recorded higher soil available boron (1.55 mg kg-1soil) and Coastal zone least (0.01 mg kg-1soil) and for others boron content ranged from 0.11 mg kg-1 soil to 1.09 mg kg-1soil. Deficiency of available boron was noticed in Coastal and Hill ecosystems experiencing of high rainfall. Among the chemical fractions, residual boron contributed around 98 per cent. Other fractions followed the order of oxide bound > organically bound > specifically adsorbed > readily soluble boron. Total boron was highest in Northern dry zone (582.3 mg kg-1). Residual boron has minimum effect on available boron, whereas fractions like readily soluble boron, specifically adsorbed boron, oxide bound boron and organically bound boron contribute towards plant available. Readily soluble and specifically adsorbed boron had positive correlation with pH and available boron, residual and total boron had a positive correlation with organic carbon. Adsorption behaviour of boron followed both Freundlich and Langmuir isotherms. Amount of boron adsorbed was more in Northern dry zone and least in Southern dry zone. The adsorption and fractionation scheme proved to be satisfactory in terms of sensitivity and positioning of soil boron. The methodology should be useful in determining the effects of soil management practices on soil boron status and in monitoring changes in boron distribution with time due to the various soil practices.