Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2000.104.10914C-labelled Cyfluthrin]]>LodhiA. MalikN.N. AzamF. 1200031A field lysimeter experiment was conducted to study the uptake by plants, dissipation and movement in soil of 14C-cyfluthrin (active ingredient of Baythroid, an insecticide produced by Bayer, Germany). Cotton and wheat plants were grown in succession to study the uptake of 14C. The chemical was worked well into the soil supporting the growth of a healthy cotton plant. The plant harvested at maturity contained 0.376 percent of the applied 14C; a major portion (ca 65 percent of the total) of the 14C being located in the stem portion. Wheat plants grown after cotton contained 0.11 percent of the initially applied 14C.
Dissipation of 14C from the soil-plant system was fairly rapid and after 9 weeks (during growth of cotton), ca 50 percent of the applied 14C was unaccounted. Subsequent losses were slower and during the remaining study period of 29 weeks, a further decrease of only 10 percent of the applied 14C occurred. Wheat growth and organic amendment caused a decrease in the loss of 14C from the soil-plant system. At all sampling intervals, a greater proportion of 14C was restricted to the top 0-10 cm layer and the amount consistently decreased with depth. In general, >80 percent of the 14C determined in soil at different sampling intervals was present in forms non-extractable with methanol.]]>Amos, R. and J.P. Leahey,19861986pp: 821828Arienzo, M., T. Crisanto, M.J. Sanchez-Martin and M. Sanchez-Camazano,19944218031808Azam, F., F. Fuhr and W. Mittelstaedt,198814C]methabenzthiazuron in an arid region soil-effect of organic amendment, soil disturbance and fumigation.]]>107149158Cheng, H.H., F. Fuehr, H.J. Jarczyk and W. Mittelstaedt,197826595599Gerstl, Z. and C.S. Helling,198517667673Hascoet, M. and L. Andre,1978278598Jenkinson, D.S.,197714C labelled ryegrass decomposing under field conditions.]]>28424434Khan, S.U., R.M. Behki, R.I. Tapping and M.H. Akhtar,198836636638Khan, S.U. and H.A. Hamilton,198028126132Leahey, J.P. and P.K. Carpenter,198014C]permethrin.]]>11279289Lee, P.W.,1985Pydrin insecticide) in the soil environment.]]>33993998Lodhi, A., S.H.M. Naqvi, F. Azam and F. Fuhr,1996Clabelled cyfluthrin in soil and incorporation of C in to humus fractions as affected by wheat straw amendment and moisture conditions.]]>39128131Maitlen, J.C. and J.E. Halfhill,198533754757Maqueda, C., E. Morillo and J.L.P. Rodriguez,1989148336345McDowell, L.L., G.H. Willis, L.M. Southwick and S. Smith Jr.,1987218392Mikami, N., Y. Baba, T. Katagi and J. Miyamoto,198533980987Mueller, T.C. and P.A. Banks,199139275279Paul, E.A. and J.A. van Veen,19781978pp: 61102Preiss, U., P.R. Wallnofer and G. Engelhardt,1988231324Schnitzer, M. and S.U. Khan,1978Smith, S., G.H. Willis and C.M. Cooper,199555142148Somasundaram, L., J.R. Coats, K.D. Racke and V.M. Shanbhag,199110185194Sorenson, L.H.,19757171177Stevenson, F.J.,19761976pp: 180-207pp: 180-207Sundaram, K.M.S.,19963112151239Sundaram, K.M.S.,199732147175Turco, R.F. and A. Konopka,199022195201Van Veen, J.A., J.N. Ladd and M. Amato,198514C(U)] glucose and [N] (NH4)2SO4 under different moisture regimes.]]>17747756Willis, G.H., L.L. McDowell, S. Smith and L.M. Southwick,198615116120Zhang, L., S.U. Khan, M.H. Akhtar and K.C. Ivarson,19843212071211