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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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Subject: Soil Science × Author: Meenakshi × Start date: 1997 × Type: Thesis × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Effect of long-term zero tillage in wheat on C and N fractions of different textured soils under rice-wheat cropping system
    (CCSHAU, 2016) Meenakshi; Khokhar, Kiran K.
    Information about soil organic carbon and nitrogen fractions under different tillage systems is essential for sustainability of agricultural systems. The long-term impact of zero tillage in wheat under rice-wheat cropping system at farmers’ fields was evaluated during 2015-2016 for monitoring changes in different fractions of soil organic carbon and nitrogen, and wheat productivity parameters in three texturally different soils. The zero tillage practice in wheat increased the organic carbon content and carbon stock as compared to conventional tillage in soils. Reduction in the intensity of tillage from conventional to zero resulted in decrease in bulk density of sub- surface soil. The zero tillage increased dissolved organic carbon, microbial biomass carbon light and heavy fractions of carbon in soils at both the depths. The light and heavy fraction carbon values were observed to be lower in lighter textured soil which increased with increase in fineness of the texture. The total nitrogen was highest in clay loam under zero tillage at 0-15 cm depth as compared to conventional tillage. Total hydrolysable nitrogen was found highest in clay loam followed by loam and sandy loam soils. Highest values of nonhydrolysable nitrogen, amino acid nitrogen, hydrolysable ammonium nitrogen were observed in zero tillage practice as compared to conventional practice. The practice of zero tillage found to be effective in increasing yield of wheat in fine textured soils as compared to coarse textured. The results of the study indicated that the practice of zero tillage in wheat under rice-wheat cropping system may be adopted for sustaining the productivity of the cropping system