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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 × Author: HSIEH, JACK JUI-CHANG × End date: 1969 × Start date: 1963 ×
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    ThesisItemOpen Access
    A TECHNIQUE FOR CONTROLLING SOIL WATER CONTENT IN THE VICINITY OF ROOT HAIRS AND ITS APPLICATION TO SOIL-WATER-PLANT STUDIES
    (UNIVERSITY OF AGRICULTURAL SCIENCES, BANGALORE, 1963) HSIEH, JACK JUI-CHANG; GARDNER, W H
    A technique for controlling water content in the root hair zone of growing plants has been developed and used to investigate (1) the relationship between soil water tension and plant growth and (2) the nature of water flow in the vicinity of root hairs . This technique could also be adapted to study the extent of mobilization of various plant nutrients and herbicides into the root hair zone and their subsequent uptake. The technique involves growing plants on a fine screen placed over soil in such a way that root hairs extend about 1.5 mm through the screen into soil with both main roots and rootlets remaining above the screen. A gamma-ray moisture detecting device is used to monitor the supply of water in the root hair zone • . By paeans of either adjusting the length of a hanging water column or controlling the rate of water supply. the rate of water flow to the soil lamina beneath the screen can be so adjusted as just to offset the loss due to evapotranspiration . Therefore. a predetermined soil water level can be maintained to within ~1.5\ water content in the root hair zone a growing plant. The expert~~~entail data show the dependence of plant growth upon Soil -~•r tension. lbe &Roth of corn leaves vas first affected by water -tension at 1 bar or less. Growth ceased at about 22-30 bars tension within the root b£ir ~. lbe soil laaina just outside the root hair zone had only about b&l.f ~he water ~end ion of t ha.t inside the zone.