1. K. Al-Khatib, R. Parker, and E. P. Fruest .1992 .Foliar absorption and translocation of herbicides from aqueous and treated soil., Weed Sci, 40 :281 –287 .
2. T. O. Ballard, M. E. Foley, and T. T. Bauman .1995 .Absorption, translocation, and metabolism of imazethapyr in common ragweed (Ambrosia artemisiifolia) and giant ragweed (Ambrosia trifida)., Weed Sci, 43 :572 –577 .
3. Why glyphosate is a global herbicide: strengths, weaknesses and prospects
4. J. B. Carey, D. Penner, and J. J. Kells .1997 .Physiological basis for nicosulfuron and primisulfuron selectivity in five plants species., Weed Sci, 45 :22 –30 .
5. D. Chachalis, K. N. Reddy, D. D. Elmore, and M. L. Steele .2001 .Herbicide efficacy, leaf structure, and spray droplet contact angle amongIpomoeaspecies and small flower morningglory., Weed Sci, 49 :628 –634 .