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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 Sciences × Author: Bedwal, Sandeep × Type: Thesis × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    Nutrition of crops in partially reclaimed sodic soils through elemental sulphur based novel formulation
    (CCSHAU, Hisar, 2023-04) Bedwal, Sandeep; Rai, Arvind Kumar
    Alkalinity hinders the crop growth and productivity of partially reclaimed sodic soil. Reliance formulated elemental sulphur-based novel formulation (RFS) generated from fortification of elemental S (So) had the potential to neutralize soil alkalinity and improve soil nutrient availability for crop production. Therefore, incremental doses (control, 10, 20, 30, 40, 50, 60 and 70 kg ha–1) of RFS were applied in winter mustard and its residual effect in sorghum was studied for two consecutive years. Parallelly, similar incremental doses of RFS were also applied in wheat, and its residual effect was studied in the rice crop. Application of 47.2 and 45.2 kg ha–1 of RFS can optimize the yield and respective crop benefit ratio. Further, the locally available organic wastes (farmyard manure, city waste compost, poultry manure, sewage sludge and pressmud) were acidified with RFS in a controlled 28 days at room temperature to enhance the titratable acidity and equivalent neutralization potential of waste (ENP). The equivalent neutralization potential of acidulated compost positively correlated with electrolytes, total P, dissolved organic C (DOC), and phenol. Further, multiple regression analysis showed that water–soluble SO42–, Mg2+, and DOC were the key variables that fully explained the alkali neutralization potential of the acidulated organics (R2 >0.99; P< 0.001). Application of acidulated organics @ 10 Mg ha–1 decreased soil pHs and increased the Ca2+, Mg2+, SO42–, total N and total P content of soil solution. It also improved the availability of Olsen‘s P, ammonium acetate extractable K, CaCl2– extractable S and organic C content along with microbial biomass C, N, P and S content. It also improved the activities of soil enzymes viz., dehydrogenase, β–glucosidase, fluorescein diacetate and alkaline phosphatase, except for arylsulphatase. These findings had economic as well as ecological significance for the low-cost nutrient management in alkaline soil conditions and disposal of the agricultural and city wastes.