Plant Pathology Journal1812-53871812-5425Asian Network for Scientific Information10.3923/ppj.2005.61.68Coryza canadensis]]>ShaukatS.S. SiddiquiI.A. MunirNadia 1200541The study was carried out during June-September 2001 at the Department of Botany, University of Karachi. Present investigation concluded that aqueous extract of Conyza canadensis had no significant impact on egg hatch of Meloidogyne javanica in vitro. However, aqueous extract of C. canadensis caused considerable mortality of M. javanica juveniles at 24 h but not at 48 h. Ethanolic extract of powdered shoot of C. canadensis did not exert any inhibitory effect on radial growth of root-infecting fungi including Macrophomina phaseolina, Fusarium solani and Rhizoctonia solani in vitro. Soil amendment with powdered shoot of C. canadensis at 5% concentration significantly reduced galling due to M. javanica in mungbean roots grown in non-sterilized soil but not in sterilized soil. C. canadensis at 2.5% concentration did not affect root-knot development in either of the soil types tested. Soil amendment with 5% C. canadensis in non-sterilized soil markedly reduced plant height and fresh weight of mungbean shoots. Fresh root weights were markedly lowered, in both sterilized and non-sterilized soil, amended with 5% C. canadensis. C. canadensis suppresses root-knot nematode disease indirectly by enhancing soil microbial assemblages, particularly the microfungi antagonistic to root-knot nematodes.]]>Lazarovits, G.,20012317Shaukat, S.S. and I.A. Siddiqui,2001Lantana camara in the soil changes the fungal community structure and reduces impact of Meloidogyne javnica on mungbean.]]>40245252Shaukat, S.S., I.A. Siddiqui, G.H. Khan and M.J. Zaki,2002Argemone mexicana, a tropical weed.]]>245239247Fassuliotis, G. and G.P. Skucas,1969Meloidogyne incognita acrita.]]>1287288Ali, N.I., I.A. Siddiqui, M.J. Zaki and S.S. Shaukat,2002Lantana camara against Meloidogyne jcnanica in mungbean.]]>2999102Rodriguez-Kabana, R., G. Morgan-Jones and I. Clift1987100237247Rodriguez-Kabana, R., V. Estaun, J. Pino-Chet and O. Marfo,1995Meloidogyne sp. on tomato.]]>27575584Shaukat, S.S., N. Munir and I.A. Siddiqui,2003Conyza canadensis (L.) cronquist: A cosmopolitan weed.]]>210341039Rodriguez-KAbana, R. and M.H. Pope,198111175186Booth, C.,1971Fusarium. Commonwealth.]]>pp: 237pp: 237Domsch, K.H., W. Gams and T.H. Anderson,1980Vol. 1,Pages: 859Pages: 859Thom, C.,1945Aspergilli.]]>pp: 373pp: 373Magurran, A.E.,1988Pages: 179Pages: 179Natsch, A., C. Keel, N. Hebecker, E. Laasik and G. Mago,1997Pseudomonas fluorescens CHAO and its antibiotic overproducing derivative on the diversity of resident root colonizing pseudomonads.]]>23341352Shannon, C.E. and W. Weaver,1963pp: 367pp: 367Southwood, T.R.E. and P.A. Herinderson2000pp: 575pp: 575Pielou, E.C.,1975Pages: 165Pages: 165Menhinick, E.F.,196445859861Culbreath, A.K., R. Rodriguez-Kabana and G. Morgan-Jones,1985154975Godoy, G.R., R.A. Rodriguez, R.A. Shelly and G. Morgan-Jones,1983Meloidogyne arenaria in infsted soil. 11: Effects on microbial populations.]]>136374Kokalis-Burelle, N., R. Rodriguez-Kabana, C.F. Weaver and P.S. King,1994Meloidogyne arenaria on Soybean.]]>162163168Rodriguez-Kabana, R., G. Godoy, G. Morgan-Jones and R.A. Shelly,19837595106Huebner, R.A., R. Rodfiguez-Kabana and R.M. Patterson,1983133754Shaukat, S.S. and I.A. Siddiqui,2001Meloidogyne javanica in mungbean.]]>29123126Shaukat, S.S., I.A. Siddiqui and F.S. Mehdi,2003Avicennia marina (mangrove) soil amendment changes the fungal community in the rhizosphere and root tissue of mungbean and contributes to control of root-knot nematodes.]]>42135140Chavarria-Carvaial, J.A., R. Rodriguez-Kdbana, J.W. Kloepper and G. MorganJones,200131165180Siddiqui, I.A. and S.S. Shaukat,2002Meloidogjyne javanica and colonization by Pseudomonas aeruginosa in Mungbean.]]>30119125Hornby, D.,1983216585Cook, R.J. and K.F. Baker,1983Stirling, G.S.,1991pp: 235-274pp: 235-274Mian, I.H., G. Godoy, R.A. Shelly, R. Rodriguez-Kabana and G. Morgan-Jones,1982Meloidogyne arenaria in infested soils.]]>127184