Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2000.1775.1777Arachis hypogaea)]]>Fayyaz ChaudharyM. Ali AbbasiAzhar 102000310Effect of different concentrations of three pre-emergence herbicides namely, pendimethalin (N-(1-ethylopropyl) 2,6-dinitro-3-4-xylidine), trifluralin (2,6-dinitro-N-N-dipropyl-4-trifluoromethylaniline) and oxadiazon (3-(2-4 dichloro-isopropoxy Phenyl) -5-t-butyl -3, 4 oxadizaolin 2-one) on nodulation, nitrogen fixation, morphological characters and some other parameters have been investigated in groundnut (Arachis hypogaea), L. cv Banki. Pendimethalin at 0.74, 1.49, 2:23, trifluralin at 0.37, 0.75, 1.20 and oxadizon at 0.30, 0.60, and 0.90 kg ha1 was incorporated in soil before sowing. Data were recorded 40, 70 and 90 days after germination. Recommended doses of these herbicides in general had no significant effect on different parameters under investigation. Higher doses of these herbicides adversely affected the nodulation and the fresh and dry weights of nodules. However higher concentration of oxadiazon resulted in increased N accumulation in shoots of groundnut plants. It was concluded that the herbicides under investigation did not affect the groundnut plants adversely if used at recommended levels.]]>Anderson, W.P.,19832nd Edn.,pp: 33-42pp: 33-42Bollich, P.K., E.P. Dunigan, L.M. Kitchen and V. Taylor,1988₂ (C₂H₂) fixation and seed yield of field-grown soybeans (Glycine max).]]>361519Brar, L.S. and S.P. Mehra,1989211621Brecke, B.J., J.E. Funderburk, I.D. Teare and D.W. Gorbet,1996881418Ozair, C.A. and L.J. Moshier,19889316320Deal, L.M. and F.D. Hess,198023168175Durgesha, M. and A.V. Lakshminarashimhan,1989232427Durgesha, M.,1993Arachis hypogaea L.).]]>29469472Gill, B.S., J.S. Samra, H.S. Brar and S.P. Mehra,198623394397Gonzalez, A., C. Gonzalez-Murua and M. Royuela,1996Pisum sativum).]]>443137Grichar, W.J., A.E. Colburn and P.A. Baumann,1996Cyperus esculentus) control in peanut (Arachis hypogaea) as influenced by method of metolachlor application.]]>10278281Hardy, R.W., R.D. Holsten, E.K. Jackson and R.C. Burns,19682 fixation: Laboratory and field evaluation.]]>4311851207Lac, N.B. and B.R. Nguyen,1993Rhizobium sp.]]>575967Malavia, D.O. and J.C. Patel,198934205208Mohanty, S.K., S.K. Pani, M. Kar and N. Baisakh,1997Arachis hypogaea).]]>67296298Novo, M.D.S.S., L.S.P. Cruz, E.P. Portugal, V. Nagai and M.C.A. Ortolan,199049183191Pahwa, S.K., J. Prakash and H.R. Sharma,1988Cajanus cajan L.).]]>1131140Rafey, A. and K. Prasad,1995Arachis hypogaea).]]>654245Reddy, P.S.,19841984pp: 3235Novo, M.D.C.D., L.S.P. Cruz, A.L.M. Martins, V. Nagaih, M.L.C.D.O. Lombard, E.S. Lopes and L.A. Ambrosio,199150139151Singh, B.G. and D.G.C. Singh,1972195963Steel, R.G. and J.H. Torrie,19812nd Edn.,Vehu, G., R.C. Babu and M. Nagarajan,199481323325Vidal, D., J. Martinez, C. Bergareche, A.M. Miranda and E. Simon,1992Vicia faba.]]>144235245Widaryanto, F.,1994Arachis hypogau L.) on weed control and its effect on growth and yield of peanut plants on dry land.]]>176570Zelmer, I. and G. Guenther,1988Beta vulgaris (sugar beet) and Chenopodium album (goose foot).]]>183407415Duncan, D.B.,195511142Prakash, J. and S.K. Pahwa,19821982pp: 4243