1. C. H. Koger, K. N. Reddy, and D. H. Poston .2004 .Factors affecting seed germination, seedling emergence, and survival of Texasweed (Caperonia palustris)., Weed Sci., 18 :1058 –1065 .
2. 1998 .SAS/STAT User's guide. Release 7.00 Cary, NC Statistical Analysis Systems Institute.1028 .
3. 1998 .Weed Identification Guide Champaign, IL Southern Weed Science Society.