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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: Dhanker, Preeti × Start date: 2015 × Type: Thesis × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    Studies on persistence and leaching behaviour of ready pre-mix formulation (Chlorantraniliprole + Thiamethoxam) in/on tomato
    (CCSHAU, Hisar, 2021-10) Dhanker, Preeti; Sushil
    The study reports the uptake as well as the distribution pattern of insecticides, chlorantraniliprole and thiamethoxam in tomato plant matrices including root, stem, leaves and fruits from the soil via drench application of their ready-pre mix formulation chlorantraniliprole and thiamethoxam. For extraction and clean-up, three different methods namely liquid-liquid partitioning, QuEChERS with no clean-up 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 above the range of 80 per cent. Rapid uptake of the insecticides by tomato plant was observed from the first day onwards. In the tomato plant, the major part of the insecticides got deposited in the roots and in the leaves. No presence of chlorantraniliprole and thiamethoxam residues were reported in tomato fruits which were much below their respective maximum residue limits (MRLs). In the soil samples, chlorantraniliprole residues for respective SD and DD were 0.389 and 0.788 μg g−1 initially which dissipated till day 20 reaching LOQ after that, while the thiamethoxam concentration were 0.682 and 1.335 μg g−1 initially, which dissipated till 20 and 25 days for SD and DD, respectively. in leaching experiment more than 85 per cent of the residues were recovered totally, with no residues in leachates