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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: Chemistry × Author: Pooja × Start date: 1992 × Type: Thesis ×
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    ThesisItemOpen Access
    Persistance and decontamination studies of a combination formulation (pyriproxyfen 5% EC + fenpropathrin 15% EC) in okra and soil
    (CCSHAU, Hisar, 2023-02) Pooja; Sushil
    This study developed and validated a methodology for extracting the residues utilizing the QuChERS method, as well as the conformation and quantification of Pyriproxyfen and Fenpropathrin residues using GC-MS/MS working at low LOQ (0.01 mg kg-1). The field application of recommended (37.5 + 112.5 g a.i. ha-1) and double recommended dose (70 + 225 g a.i. ha-1) leads to initial deposits of Pyriproxyfen (0.359, 0.584 mg/kg) and Fenpropathrin (0.643, 0.951 mg /kg) which dissipated by following first order kinetics with half-life value ranged in between 1.79-1.84 (Pyriproxyfen) and 2.27-2.31 days (Fenpropathrin) at T1-T2 doses, respectively. The estimated pre-harvest intervals (PHI) for Pyriproxyfen and Fenpropathrin were 6.03 and 11.51, 0.91 and 2.54 days at T1 and T2 doses, respectively. There were no residues of Pyriproxyfen and Fenpropathrin in the soil after 1 day of the application of sumiprempt formulation indicating its safety for the next crop. Even though all the decontamination processes were successful in reducing the levels of both chemicals left behind, washing + boiling proved to be the most efficient. Residues of Pyriproxyfen and Fenpropathrin persisted for a little longer period in soil under laboratory conditions. ZIF-8 was synthesized by hydrothermal, sonochemical, and microwave-assisted methods, and its structural, physical, and chemical characteristics were investigated using FTIR, XRD, SEM, BET, and zeta seizer. ZIF-8 achieved a 69%, and 65 % removal of Pyriproxyfen and Fenpropathrin (20 mg/L) under optimized conditions, respectively.
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    ThesisItemOpen Access
    Chemical profiling and biological evaluation of Vetiver (Vetiveria zizanioides N.) essential oil
    (Chaudhary Charan Singh Haryana Agricultural University hisar, 2022-08) Pooja; Ravi Kumar
    The present study was undertaken for chemical profiling and evaluation of Vetiver (Vetiveria zizanioides N.) essential oil of promising Sugandha variety from different samples of roots (sample 1, sample 2, sample 3 and sample 4). Commercially available VEO was obtained from St. Botanica pharmacy store, Panchkula, Chandigarh which was ordered online. Sample 1, sample 2, sample 3 and sample 4 were harvested after 10 months, months, 18 months and 5 years of sowing. The EOs used in the study, appeared as pale yellow viscous volatile liquids, obtained in 0.55, 0.50, 1.16 and 0.26 % yield from sample 1, sample 2, sample 3 and sample 4, respectively. The yield was highest in the roots harvested after 12 months of sowing and lowest in roots which was harvested very late approximately after 5 years. A significant variation was observed in chemical composition of these VEOs. VO3 had more diversity and VO1 had lesser diversity. However, the chemical composition of VO5 was totally different from the other studied oils. The antimicrobial activity of VEOs was studied against various bacterial and fungal strains. VO3 showed higher antibacterial activity against K. aeruginosa, X. axonopodis pv. cyamopsidis, S. aureus and VO1 showed higher antifungal activity against F. oxysporum and M. grisea. Whereas, VO5 displayed least activity against tested strains.
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    ThesisItemOpen Access
    Dissipation, decontamination and leaching behaviour of thiamethoxam + λ cyhalothrin (ready mix) in soil and chilli
    (Chaudhary Charan Singh Haryana Agricultural University hisar, 2022-09) Pooja; Sushil
    The study reports the persistence as well as the decontamination pattern of insecticides, λ -cyhalothrin and thiamethoxam in chilli fruits following spray application of their ready-pre mix. For extraction and clean-up, three two different methods namely liquid-liquid partitioning and QuEChERS with clean-up were used in association with GC-MS/MS. The LOD and LOQ of the method determined were 0.01 μg g−1 and 0.005 μg g−1, respectively, and all the recoveries were found above the range of 80 per cent. Thiamethoxam persistent up to day 15 in both the doses with half-lives of 3.45 and 3.90 days respectively. While λ -cyhalothrin persisted up to day 5th with half-lives of 1.49 and 1.52 days. Washing followed by frying was observed to be the best method of decontamination. It was followed by washing with 1 % vinegar solution, 2 % salt solution, 2% tamarind with least in case of washing with water. No presence of λ -cyhalothrin and thiamethoxam residues were reported in chilli fruits which were much below their respective maximum residue limits (MRLs). In leaching experiment around 90 per cent of the residues were recovered totally, with no residues in leachates.
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    ThesisItemOpen Access
    Synthesis of possible potent herbicidal organic compounds using green catalysts
    (CCSHAU, 2019) Pooja; Rajvir Singh
    Every day there is a new invention in the field of chemistry but the people are curious about how much they are benign to us. Green chemistry serves as a tool to reshape the chemical processes to make them clean. Thus, green chemistry is the future chemistry which is simple, efficient and benign in all steps of particular synthesis processes. Coumarins, Imidazoles and Dihydropyrimidinones are versatile classes of heterocycles and intermediates for the preparation of other organic compounds due to their effective biological activities. For the preparation of these compounds and their derivatives, different reagents are being used which are quite hazardous to the environment and human health due to their toxic nature. Since last few years, attempts are being made for ecofriendly synthesis by using a green catalyst. Green catalyst is a megahit catalyst which is helpful to overcome the negative environmental effects due to various hazardous and toxic chemicals used in synthetic pathways. Hence, the most important aspect of green chemistry is the use of green catalysts in chemical reactions. Therefore an attempt has been made to synthesize above mentioned classes of compounds by using various green catalyst (Potassium dihydrogen phosphate, Oxalic acid, Citrus limetta juice, Pineapple juice and Lemon juice). These compounds were characterized by spectroscopic technique viz. 1HNMR, IR, Elemental analysis and other analytical data. Synthesized compounds were screened for herbicidal activity at 50, 100, 150 and 200 g/mL concentrations. Compounds 11, 28 and 40 were found more active against the root and shoot of Raphanus sativus L.due to the presence of methyl, chloro and methoxy group (electron-donating groups) as substituents respectively.
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    ThesisItemOpen Access
    Dissipation and decontamination of chlorantrantraniliprole in okra
    (CCSHAU, 2019) Pooja; Sushil
    Dissipation and decontamination of chlorantraniliprole (Coragen 18.5% SC) in okra and soil (at harvest time) was studied following foliar spray on okra at recommended (30 g a.i. ha-1) and double of recommended (60 g a.i. ha-1) by Central Insecticide Board (CIB). The residue of the insecticide was analyzed using GC – MS/MS with a triple Quadruple analyzer, operated in the positive ion mode using multiple reaction monitoring (MRM) of the transitions m/z 278 > 249 and 278>251. Recovery experiment was performed on okra and soil sample fortified @ 0.01, 0.05 and 0.10 mg kg-1and the observed recoveries were in range 85.23 – 88.79 % and 84.65 – 88.65% respectively. The initial deposit of CAP residue in okra fruit was 0.077 and 0.140 mg kg-1 for single (T1) and double (T2) dose respectively. These residues dissipated following first order degradation kinetics with half -life 1.90 and 1.92 days and reached below quantified level (LOQ i.e 0.01 mg kg-1) on 7th and 10th day for single (T1) and double (T2) dose respectively. In soil (at harvest time) the residue level was < LOQ for both doses. The decontamination processes dislodges the chlorantraniliprole residue to the extent of 84.00 – 38.89% from okra fruits and washing followed by boiling was found more effective i.e. 84.00 % in dislodging residue of chlorantraniliprole than washing alone and unwashed conditions.