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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: Monika × End date: 2018 × Type: Thesis × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Persistence and leaching behaviour of premix formulation of flubendiamide and buprofezin in soil
    (CCSHAU, 2018) Monika; Duhan, Anil
    In Agrochemicals Residues Testing Laboratory, Department of Agronomy, Chaudhary Charan Singh Haryana Agricultural University a laboratory experiment was conducted to study the persistence behaviour and leaching potential of flubendiamide and buprofezin residues in sandy loam and clay loam soil. To study the persistence behaviour of flubendiamide and buprofezin at single and double dose, i.e., 210 and 420 g a.i./ha, was applied in soil taken in plastic pots. Soil samples were collected periodically on 0 (1h), 1, 3, 7, 10, 15, 30, 45 and 90 days after treatments. In leaching experiment, flubendiamide and buprofezin was applied at 50 (single dose) and 100 μg (double dose) in both soils packed in plexi glass columns. Residues of flubendiamide and buprofezin were estimated by HPLC coupled with Quadrupole Dalton Mass Detector (QDa) and GC-MS-tandem mass spectrometry equipped with capillary column. For both insecticides limit of detection and quantification were 0.001 and 0.005 μg/g, respectively. Dissipation followed a first order kinetics in case of both flubendiamide and buprofezin. Half-life of flubendiamide was found to be 25.1 and 26.6 days in clay loam soil and in case of sandy loam, 27.3 and 31.3 days at both the doses, respectively. For buprofezin, half-life was 12.4 and 12.6 days in clay loam and 19.1 and 20.2 days in sandy loam at both the doses, respectively. The residues were below detectable limit after 45 days in case of flubendiamide for both the treatments however buprofezin residues reached below detectable limit after 60 days. Leaching experiment was carried out in laboratory under continuous flow conditions. The residues of flubendiamide and buprofezin were retained up to soil depth of 30-35 cm but maximum retention was found upto 15 cm in flubendiammide and upto 20 cm in buprofezin. There were no fractions of flubendiamide and buprofezin residues in leachate indicating about poor leaching potential of both insecticides.