1. M. S. Ahmadi, L. C. Haderlie, and G. A. Wicks .1980 .Effect of growth stage and water stress on barnyardgrass (Echinochloa crus-galli) control and on glyphosate absorption and translocation., Weed Sci, 28 :277 –282 .
2. G. Aldridge, L. J. Moshier, and B. E. Freed .1996 .Performance of glyphosate tolerant soybean as influenced by weed control systems., Proc. North Cent. Weed Control Conf, 51 :129 .
3. A. P. Appleby, and M. Somabhi .1978 .Antagonistic effect of atrazine and simazine on glyphosate activity., Weed Sci, 26 :135 –139 .
4. J. C. Arnold, D. R. Shaw, and S. M. Schraer .1997 .Influence of application timing on efficacy of glyphosate in Roundup Ready® soybean., Proc. South. Weed Sci. Soc, 50 :176 –177 .
5. Soybean Yield Response to Narrow Rows Is Largely due to Enhanced Early Growth