Dissipation and persistence of indoxacarb and thiamethoxam in chilli

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dc.contributor.advisorSharma, Smriti
dc.contributor.authorHarpreet Kaur
dc.date.accessioned2021-07-30T07:12:10Z
dc.date.available2021-07-30T07:12:10Z
dc.date.issued2021
dc.description.abstractSupervised field trials were conducted for two consecutive years to study the residues of indoxacarb and thiamethoxam in chilli, following two foliar applications of Indoxacarb 14.5 SC @ 55 and 110 g a.i. ha-1 and seed treatment of Thiamethoxam 30 FS @ 2.1 and 4.2 g a.i. ha-1. The chilli fruit samples were collected at different time intervals and were processed by following QuEChERS methodology and determination of indoxacarb and thiamethoxam residues were done by Gas Liquid Chromatography (GLC) and Gas Chromatography-Mass Spectrometry (GC-MS/MS). The average initial deposits of indoxacarbon green chilli fruits were found to be 2.75 and 5.93 mg kg-1 while 2.56 and 5.68 mg kg-1 respectively, in year 2019 and 2020, that reached below its limit of quantification (0.01 mg kg-1) after 25 and 35 days at single and double dose, respectively. The mean residues of thiamethoxam in seedlings, green chilli fruits and red chilli fruits were observed to be below its limit of quantification (0.05 mg kg-1). The half-life value of indoxacarb in green chilli was calculated to be 3.46-4.77 and 3.58-3.76 days while 3.85 and 4.93 days in soil, respectively at single and double the recommended dose. Household processing methods were studied for reduction of residues of indoxacarb in chilli and it was observed that boiling found most effective (71.27-78.75%) followed by acetic acid + washing (70.74-74.73%), followed by sodium chloride + washing (60.06-75.75%) and baking soda + washing (61.22-74.91%). Sun drying of red chilli fruits resulted in increase in the residues of indoxacarb by 1.58-2.10 folds and thiamethoxam residues by 2.62-2.83 folds.en_US
dc.identifier.citationHarpreet Kaur (2021). Dissipation and persistence of indoxacarb and thiamethoxam in chilli (Unpublished M.Sc. thesis). Punjab Agricultural University, Ludhiana, Punjab, India.en_US
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810171160
dc.keywordsIndoxacarb, Thiamethoxam, Chilli, Dissipationen_US
dc.language.isoEnglishen_US
dc.pages78en_US
dc.publisherPunjab Agricultural University, Ludhianaen_US
dc.research.problemDissipation and persistence of indoxacarb and thiamethoxam in chillien_US
dc.subEntomologyen_US
dc.themeDissipation and persistence of indoxacarb and thiamethoxam in chillien_US
dc.these.typeM.Scen_US
dc.titleDissipation and persistence of indoxacarb and thiamethoxam in chillien_US
dc.typeThesisen_US
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