title: Residues of phosphamidon in rice fields.
abstract: Thirty-day-old seedlings of rice plants (IR-20 variety) from the nursery were transplanted into experimental plots and after 52 days were sprayed with phosphamidon (Dimecron 85% EC) at two dose-rates (0.38 kg a.i. ha(-1) and 0.76 kg a.i. ha(-1)). Residues of phosphamidon in the plant, soil and water were analysed by GLC, at various time intervals, and were found to decrease steadily up to 15 days. A second application of the pesticide was made on day 113 and grains harvested on day 138. The residue level in the plants was 0.12 microg g(-1) and in the grains 0.04 microg g(-1) with the high dose. This is slightly below the EPA prescribed tolerance level of 0.05 microg g(-1). The residues in both soil and water were very low, 24 h after spraying.
authors.affiliation: Department of Biochemistry, School of Biological Sciences, Madurai Kamaraj University, Madurai-625 021, India.
authors.forename: S R
authors.initials: SR
authors.lastname: Jebakumar
authors.forename: N
authors.initials: N
authors.lastname: Kannan
authors.forename: B R
authors.initials: BR
authors.lastname: Subramanian
authors.forename: J
authors.initials: J
authors.lastname: Jayaraman