Analysis of Malathion Residue in K-25 Variety of Lycopersicum esculentum Mill. Grown in Gwalior Region
Gupta Shalini, Tiwari Avinash*
School of studies in Botany, Jiwaji University, Gwalior–474 011, MP, India.
*Corresponding author, E-mail: firstname.lastname@example.org
The experiment was carried out in the Charak Garden of Jiwaji University, Gwalior during the year 2007–2008. Recommended doses of malathion were applied in K- 25 variety of tomato. The experimental plots were in triplicates, and sampling was done after 110 days of sowing, at an interval of every 10 days, to 150 days of sowing. Insecticide was sprayed at 50th day (flowering stage) and 100th day (fruiting stage) from the date of sowing. Extraction of insecticide was carried out by dichloromethane, acetone and hexane. Malathion residue was analyzed by using Gas Chromatograph (GC 1000, Chemito) with Electron Capture Detector (ECD). The residue level of malathion were found to be low.