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Chaudhary Charan Singh Haryana Agricultural University, Hisar

Chaudhary Charan Singh Haryana Agricultural University popularly known as HAU, is one of Asia's biggest agricultural universities, located at Hisar in the Indian state of Haryana. It is named after India's seventh Prime Minister, Chaudhary Charan Singh. It is a leader in agricultural research in India and contributed significantly to Green Revolution and White Revolution in India in the 1960s and 70s. It has a very large campus and has several research centres throughout the state. It won the Indian Council of Agricultural Research's Award for the Best Institute in 1997. HAU was initially a campus of Punjab Agricultural University, Ludhiana. After the formation of Haryana in 1966, it became an autonomous institution on February 2, 1970 through a Presidential Ordinance, later ratified as Haryana and Punjab Agricultural Universities Act, 1970, passed by the Lok Sabha on March 29, 1970. A. L. Fletcher, the first Vice-Chancellor of the university, was instrumental in its initial growth.

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20211
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Subject: Soil and Water Engineering × Author: Deokar Gopal Kathalu × Start date: 2020 ×
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    ThesisItemOpen Access
    Response of onion with different irrigation frequency and lateral spacing under subsurface drip system
    (CCSHAU, Hisar, 2021-08) Deokar Gopal Kathalu; Sanjay Kumar
    An experiment was conducted to study soil water dynamics and yield response of onion crop with irrigation frequencies (one, two, three and four days) and lateral spacing (45cm and 60cm) under subsurface drip irrigation during the spring summer season 2020 and 2021 in 2m x 2m micro plots, built in the field area of Department of Soil and Water Engineering, CCSHAU, Hisar, Haryana, India. At the middle of 45cm and 60cm lateral spacing with daily irrigation, available moisture in the root zone (0-60cm) was 12.73cm and 12.33cm respectively, which was higher by 3.14% in 45cm lateral spacing than 60cm. Average highest (102.28 g) fresh weight of onion bulb and number of bulbs per m2 for grade A, B and C of onion of two seasons was recorded in I2L45 treatment. Highest bulb yield of onion under grade A (>5.0cm), B (4.0-5.0cm) and C (4.0-5.0cm) was recorded in I2L45 treatment, whereas its lowest value under the respective grades was obtained in I4L60 treatment. Under two days irrigation interval with 45cm lateral spacing (I2L45), the total bulb yield was obtained 9.98% higher than 60cm lateral spacing (I2L60) treatment during year 2020, whereas, it was 9.22% higher in year 2021. The highest (11.55 kg m-3 in 2020 and 10.09 kg m-3 in 2021) and lowest (9.99 kg m-3 in 2020 and 9 kg m-3 in 2021) irrigation water use efficiency was observed in I2L45 and I4L60 treatments, respectively. On the basis of soil water dynamics, superior quality and highest yield of onion in sandy loam soil, it is concluded that subsurface drip irrigation with two days irrigation interval with 45cm lateral spacing gives better performance as compared to one, three and four days irrigation in 45 as well as 60cm lateral spacing.