Response of winter wheat (<i>Triticum aestivum</i> L.) to autumn applied saflufenacil
- 1 Lynette R. Brown, Nader Soltani, Christy Shropshire, Peter H. Sikkema
- 2 Lynette R. Brown, Nader Soltani, Christy Shropshire, Peter H. Sikkema
- 3 Lynette R. Brown, Nader Soltani, Christy Shropshire, Peter H. Sikkema
- 4 Lynette R. Brown, Nader Soltani, Christy Shropshire, Peter H. Sikkema
Abstract
There is limited information on the effect of saflufenacil application timing when applied in autumn to winter wheat. Five field experiments were conducted over a three-year period (2007- 2009) at two locations (Ridgetown and Exeter, Ontario) to evaluate the tolerance of winter wheat to autumn applications of saflufenacil applied pre-plant (PP), pre-emergence (PRE), or post-emergence (POST) at 25, 50, 100 and 200 g a.i. ha -1 . As the dose of saflufenacil increased, the amount of injury observed also increased. By May of the following spring, injury ranged from 11 to 20% at the 25 to 200 g a.i. ha -1 doses of saflufenacil. Saflufenacil applied PP and PRE caused little to no injury in winter wheat. Saflufenacil applied POST and POST + Merge in the autumn caused up to 41% injury with the POST + Merge application being the most injurious. However, this injury was transient with no effect on winter wheat height or yield the following summer.
- Frihauf, J.C., Stahlman, P.W. and Geier, R.W. (2010) Winter wheat and weed response to postemergence saflufenacil alone and in mixtures. Weed Technol. 24, 262-268.
- Lyon, D.J. and Kniss, A.R. (2010) Proso millet tolerance to saflufenacil. Weed Technol. 24, 349-355.
- Moran, M.E. (2010) Pree-mergence and postemergence interactions of saflufenacil in corn (Zea mays L.). MSc thesis, University of Guelph, Guelph, Ontario, Canada.
- Sikkema, P.H., Shropshire, C. and Sol-tani, N. (2008) Tolerance of spring barley (Hordeum vulgare L.), oats (Avena sativa L.) and wheat (Triticum aestivum L.) to saflufenacil. Crop Prot. 27, 1495-1497.
- Soltani, N., Shropshire, C. and Sikkema, P.H. (2010) Sensitivity of leguminous crops to saflufenacil. Weed Technol. 24, 143-146.
- Frihauf, J.C., Stahlman, P.W., Geier, P.W. and Peterson, D.E. (2010) Winter annual broadleaf weeds and winter wheat response to postemergence application of two saflufenacil formulations. Weed Technol. 24, 416-424.
- Geier, P.W., Stahlman, P.W. and Charvat, L.D. (2009) Dose responses of five broadleaf weeds to saflufenacil. Weed Technol. 23, 313-316.
- Knezevic, S.Z., Datta, A., Scott, J. and Charvat, L.D. (2010) Tolerance of winter wheat (Triticum aestivum L.) to pre-emergence and post-emergence application of saflufenacil. Crop Prot. 29, 148-152.