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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 Sciences × Author: Kavita × Start date: 1994 × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    Crop residue management options and effects on soil properties and crop productivity under rice - wheat cropping system
    (CCSHAU, Hisar, 2021-07) Kavita; Dev Raj
    An experiment on residue management was conducted during Rabi, 2018 at Research Farm KVK, Panipat, CCS Haryana Agricultural University to study the effect of residue management options and fertilizer levels on soil properties and crop productivity under rice wheat cropping system. The experiment was laid out in spilt plot design consisted 4 residue management practices (R1: Residue removal, R2: Residue Burning, R3: Residue Incorporation and R4: Residue Retention ,Direct seeding of wheat with happy seeder into rice stubbles) in main plot and with five fertilizers level (F1: Control, F2: 100% N + 50% RD of P&K, F3: 100% N + 75% RD of P&K and F4: 100% N+75% RD of P&K+ Waste decomposer and F5:100% of RDF) in sub-plot. N and P mineralisation were highest at 25 and 55 DAS, respectively, values decline thereafter for both during first year whereas during second year value again increase at 115 DAS. MBC and enzymes values were also reported higher at 55 DAS during both the years. Urease and alkaline phosphatase followed same trend as mineralisation during both the year, however MBC and dehydrogenase followed the different trend during 2019-20. Burning of rice residue decreased the MBC, dehydrogenase and urease activity, however alkaline phosphatase activity increased after burning. The available N.P and K content in soil after rice harvest varied from 115 to 129 and 113 to 134, 24.6 to 44.2 and 25.2 to 48.2 and 175 to 193 and 176 to 196 kg ha-1, respectively among different treatment combination during 2019 and 2020, respectively. Available nutrient status in soil followed the order retention> incorporation> burning> removal under residue management and 100% RDF>100% N+75% RD of P&K> 100% N + 75% RD of P&K> 100% N + 50% RD of P&K> control in case of fertilizer level except for the Fe (higher under control) during both years. Higher value of TOC (0.800 and 0.814 %) and SOC (0.680 and 0.694 %) was reported with the retention treatment while mean value of MBC (350 and 379 mg/kg) and DOC (418 and 540 mg/kg) recorded higher under incorporation during both the year. Organic carbon fraction followed the order: recalcitrant > less labile> very labile> labile during both years. Lower value of bulk density and higher value of water holding capacity recorded with R4 treatment. Germination index was reported higher under removal and lowest value recorded with retention during both the year. The highest grain and straw yield of wheat was recoded with removal and 100% RDF during 2018-19 and retention and 100% RDF during 2019-20. Grain and straw yield of rice grown after wheat in the same plot follows the order: incorporation>retention>burning>removal.