%D %0 ARTICLE %T Residues of phosphamidon in rice fields . %J Environ . Pollut . %V 61 ( 3 ) %P 227-34 %A Jebakumar SR %A Kannan N %A Subramanian BR %A Jayaraman J %M pub15092362 %X 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 .