Plant Pathology Journal1812-53871812-5425Asian Network for Scientific Information10.3923/ppj.2007.260.265Urocystis agropyri]]>IbrahimG.H. 3200763The capability of Urocystis agropyri as a bioagent to control ryegrass in wheat fields was examined. Non-significant difference between the wheat production sown in soil inoculated and non-inoculated with the isolate of U. agropyri, but highly differences were recorded when wheat and ryegrass sown together in soil inoculated and non-inoculated with this isolate. The results indicated that ryegrass had a significant negative effect on the productivity and yield components of wheat. The productivities of wheat were 2402 and 2362 kg ha-1 for only wheat sown in soil non-inoculated and inoculated with U. agropyri, while they were 1184 and 690 kg ha-1 for wheat and ryegrass sown in soil inoculated and non-inoculated with the isolate of U. agropyri, respectively. This confirms that ryegrass had a significant negative effect for wheat productivity and the isolate of U. agropyri can be used as a biological agent to control this weed in order to increase the productivity of wheat.]]>Al-Beldawi, A.S., A. Jawad, W. Hassan, K. Khawlla and T. Mehaissn,19875231240Boari, A. and M. Vurro,2004Fusarium sp. and other fungi as biological control agents of broomrape (Orobanche ramose).]]>30212219Bridges, D.C.,19948692695Chandramohan, S. and R. Charudattan,200122246255Charudattan, R.,19911991pp: 24-57pp: 24-57Chiang, M., C.G. Van Dyke and W.S. Chilton,1989Sorghum halepense).]]>37802809Doreete, M. and K. Jurgen,2005Ulocladium botrytis for biological control of Orobanche sp.]]>33301306Figliola, S.S., N.D. Camper and W.H. Ridings,1988Eleusine indica).]]>36830835Holm, L.G., D.L. Pluchnett, J.V. Pancho and J.P. Herberger,1977Kawas, M.M. and A.M. Al-Moshileh,200310112Massion, C.L. and S.E. Lindow,1986Sphacelotheca holci infection on morphology and competitiveness of Johnsongrass (Sorghum halepense).]]>34883888Mathur, S.B. and M.C. Barry,1993pp: 121pp: 121Mordue, J.E. and G.C. Ainsworth,1984Nus, J.L. and C.F. Hodges,1990Poa pratensis (Merion) infected by Ustilago striiformis or Urocystis agropyri.]]>74886888Rossmam, A.Y., E.P. Mary and J.S. Linda,1990Chaudhary, S.A. and M.A. Zawawi,1983Pages: 326Pages: 326Singh, R.S.,1982Smith, R.J.,1986341723Templeton, G.E.,19901990Zhang, W.M. and A.K. Watson,1997Exserohilum monoceras to cause seedling mortality of Echimocola species.]]>81629634Ziska, L.H.,200149437438