Thumbnail Image

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.

Browse

20111
Reset filters
Subject: Irrigation and Water Management × End date: 2015 × Start date: 2010 × Thesis Type: M.Sc ×
Reset filters

Search Results

Now showing 1 - 1 of 1
  • Thumbnail Image
    ThesisItemOpen Access
    RESPONSE OF RABI PIGEON PEA TO DIFFERENT LEVELS OF DRIP IRRIGATION
    (ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY, 2011) MAHALAKSHMI, K; AVILKUMAR, K
    A field experiment entitled “Response of Rabi Pigeon pea to Different Levels of Drip Irrigation” was conducted at Water Technology Centre, College Farm, College of Agriculture, Rajendranagar, Hyderabad during rabi, 2010 - 11. The treatments consisted of seven surface drip irrigation treatments with irrigation schedule based on pan evaporation replenishment factors of 0.4, 0.6 and 0.8, either kept constant throughout the crop life or combinations of these were taken at vegetative, flowering and pod development stages, in addition to furrow irrigation at IW/CPE ratio of 0.8 with an irrigation water depth of 50 mm. The experiment was laid out in a randomized block design with three replications. Higher pigeon pea yields were registered when irrigation was scheduled by drip at 0.8 Epan throughout crop life (I3) which was on par with 0.6 Epan throughout crop life (I2) and 0.6 Epan up to flowering and 0.8 Epan later on (I6) and were significantly superior over other drip irrigation treatments and furrow irrigation. Similar trends were observed in growth and yield attributing characters. Furrow irrigation at 0.8 IW/CPE ratio with an IW of 50 mm throughout the crop life was statistically inferior in comparison to drip irrigation treatments except 0.4 Epan throughout the crop life (I1) which recorded lower yield. Drip irrigation treatments recorded higher water productivity ranging from 2.05 to 2.63 kg m-3 in comparison to furrow irrigated crop (1.48 kg m-3). Maintaining higher moisture regimes in drip irrigated treatments resulted in higher protein content and protein yield over other treatments. Lowest protein content and protein yield were registered in furrow irrigated treatment (I8). The seasonal ETc requirement of pigeon pea varied from 203.8 mm to 407.5 mm among different drip irrigation treatments. It was highest in 0.8 Epan throughout the crop life (I3) followed by 0.6 Epan up to flowering and 0.8 Epan later on (I6) as compared to other irrigation treatments. The seasonal ETc under furrow irrigated crop was the highest and amounted to 413.9 mm. The average daily ETc rate varied from 1.23 mm to 2.58 mm under different treatments. The quadratic water production function indicated that the predicted maximum yield (Ymax) of 842.2 kg ha-1 was obtained at 372.3 mm of seasonal water requirement. The water production function did not emerge through the origin and the value of regression constant (a) was negative, indicating that some minimum amount of irrigation water i.e., crop ET was required to be expended to realize the economic yield in pigeon pea crop. It can be concluded that pigeon pea can be grown as rabi crop under Rajendranagar conditions irrigated with drip system at 0.8 Epan throughout the crop life with an optimal seasonal water requirement of 372.3 mm. This gave a maximum yield of 842.2 kg ha-1 and was found remunerative under the prevailing prices of output and input. Further, it was observed that this practice of growing of rabi pigeon pea under drip irrigation is economically viable. Under limited water supply situations, scheduling irrigation at 0.6 Epan throughout the crop life (I2) or 0.6 Epan up to flowering and 0.8 Epan later on (I6) with an optimal seasonal water requirement of 363.1 mm was found to be most productive and remunerative.