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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: Crop Physiology × Author: ADARSHA, T. S. × Start date: 2000 × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    PHYSIOLOGICAL BASIS OF PRODUCTIVITY IN RELATION TO NUTRIENT SUPPLY UNDER DIFFERENT MOISTURE REGIMES IN COTTON
    (University of Agricultural Sciences GKVK, Bangalore, 2005-06-20) ADARSHA, T. S.; B. C. PATIL
    PHYSIOLOGICAL BASIS OF PRODUCTIVITY IN RELATION TO NUTRIENT SUPPLY UNDER DIFFERENT MOISTURE REGIMES IN COTTON ADARSHA T.S. 2004 ABSTRACT Dr. B.C. PATIL MAJOR ADVISOR Field and pot experiments were conducted during 2001-02 and 2002-03 at. Agricultural Research Station, Dharwad, to study the physiological parameters contributing towards higher productivity under different nutrient and moisture regimes. Seed cotton yield ranged from 465.5 Kg/ha to 2193.7 kg/ha. Irrigated treatments recorded the highest seed cotton yield (1754.5 Kg/ha) compared to rainfed treatments (773.5 kg/ha). Among the nutrient levels RDF recorded significantly higher seed cotton yield, boll weight, number of bolls per plant and harvest index as compared to other nutrient levels. The higher seed cotton yield was mainly attributed to its close association with yield components viz., boll number (r=0.923), boll weight (r=0.835), harvest index (r=0.585) total diy matter (r=0.938), total chlorophyll (r=0.553) and photosynthetic rate (r=0.553). Higher N, P levels under irrigation took more number of days for all phonological stages compared to rainfed condition. Significant differences were observed among the nutrient levels and moisture regimes with respect to gas exchange parameters. Irrigated treatments, which had higher seed cotton yield possessed higher biophysical parameters than the rainfed condition. Correlation studies indicated that photosynthetic rate was significantly correlated with total chlorophyll content (r=0.520), TDM (r=0.585), stomatal conductance (r=0.549), rate of transpiration (r=0.523). Nutrient level and moisture regimes differed significantly with respect to proline content, nitrate reductase activity, total chlorophyll. Soil nitrogen, phosphorus, leaf nitrogen and phosphorus differed significantly among the nutrient levels and moisture regimes. Under irrigated condition at low N and P levels deficiency symptoms appeared clearly as compared to rainfed condition. It is inferred that higher WUE, relative water content, photosynthetic rate, stomatal conductance, chlorophyll content, nitrate reductase activity, higher number of sympodia, bolls per plant, boll weight, harvest index and maximum nutrient uptake under optimum soil moisture availability are desired for higher yield.