1. R. E. Blackshaw, 1993 .Downy brome (Bromus tectorum) density and relative time of emergence affects interference in winter wheat (Triticum aestivum)., Weed Sci, 41 :551 –556 .
2. Influence of Tillage Systems on Weed Population Dynamics and Management in Corn and Soybean in the Central USA
3. D. D. Buhler, 2002 .Tillage practices, weed seed banks, and weed community dynamics., Proc. N. Cent. Weed Sci. Soc, 57 :176 .
4. D. W. Cudney, L. S. Jordan, and A. E. Hall .1991 .Effect of wild oat (Avena fatua) infestations on light interception and growth rate of wheat (Triticum aestivum)., Weed Sci, 39 :175 –179 .
5. B. J. Dahlke, T. A. Hayden, J. W. Leif, and C. R. Medlin .2001 .Fall application of imazaquin plus glyphosate (premix) for winter annual weed control in soybeans., Proc. N. Cent. Weed Sci. Soc, 56 :93 .