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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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Author: Archana Kumar × End date: 2014 × Start date: 2010 × Type: Thesis × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Germination, emergence and growth behaviour of Medicago denticulata, vicia sativa, convolvulus arvensis and lathyrus aphaca
    (CCSHAU, 2010) Archana Kumar; Anil Kumar
    Laboratory and screen house experiments were conducted to evaluate the effect of temperature, salinity, osmotic potential, light/dark periods, seeding depth and flooding on germination and emergence of M. denticulata, V. sativa, C. arvensis and L. aphaca. Maximum germination of M. denticulata (61%), C. arvensis (41%) and L. aphaca (91%) recorded at 20OC whereas V. sativa (78%) germination was maximum at 15 OC. Root length and shoot length was maximum at 15OC for all the four weeds except C. arvensis for which maximum root length was recorded at 20OC. With decrease and increase from optimum temperature decrease in germination was noted. Germination in all the four weed species was maximum with distilled water. M. denticulata germination (15%) took place up to the conc. of 100 mM NaCl, whereas, V. sativa (5%), C. arvensis (20%) and L. aphaca (55%) germinated even at 200 mM NaCl conc. L. aphaca was most tolerant to salinity among the four weed species under study. The effect of osmotic potential on germination was declining in nature, as the osmotic potential was lowered from 0 to -0.8 MPa the germination decreased drastically. The osmotic potential of -0.8 MPa reduced the germination of M. denticulata, V. sativa and C. arvensis to zero while L. aphaca germination reduced to 3%. Light was not prerequisite for the germination of any of the four weed species because there was no significant difference in germination, root growth and shoot growth under different levels of light exposure. Optimum depth for the germination of M. denticulata, V.sativa, C. arvensis and L. aphaca was 2.0, 2.0, 1.0 and 1.0 cm respectively where corresponding germination was 61, 69, 40 and 79%. Reduction in germination and growth was recorded with increase and decrease from optimum depth. V. sativa and L. aphaca germinated even from a depth of 8.0 cm. M. denticulata was very sensitive to flooding; even a flooding of 5 days completely restricted the germination of M. denticulata. V. sativa and C. arvensis tolerated 20 days of flooding and then germination took place, whereas L. aphaca germinated (17%) even after 40 days of flooding and 2% after 80 days of flooding.