Grain sorghum response to simulated drift from Glufosinate, Glyphosate, Imazethapyr, and Sethoxydim

Journal or Publishing Institution: Weed Technology

Date of Publication: 06/01/2003

Study: http://www.jstor.org/stable/3989306?seq=1#page_scan_tab_contents

Author(s): Al-Khatib, K., Claassen, M. M., Stahlman, P. W., Geier, P. W., Regehr, D. L., Duncan, S. R. and Heer, W. F.

Article Type: Peer Reviewed Study

Abstract:

Field experiments were conducted at four locations in Kansas in 1999 and 2000 to evaluate grain sorghum response to simulated drift rates of four herbicides. Imazethapyr, glufosinate, glyphosate, and sethoxydim were applied at 1/3, 1/10, 1/33, and 1/100 of the use rate when plants were 10 to 20 cm tall. Visible crop injury increased as rates of each herbicide increased. Glyphosate and imazethapyr caused the most injury and glufosinate the least. Data show that some plants that were significantly injured 2 wk after treatment (WAT) recovered 8 WAT. However, some plants that received the highest rate of imazethapyr or glyphosate died. Grain sorghum yields were reduced only when injury was severe. This research showed that the potential for sorghum injury from off-target herbicide drift is greater from imazethapyr and glyphosate than from sethoxydim or glufosinate.

Keywords: glufosinate, glyphosate, imazethapyr, sethoxydim, sorghum, Sorghum bicolor, Moench, herbicides, pesticides

Citation:

Al-Khatib, K., M. M. Claassen, P. W. Stahlman, P. W. Geier, D. L. Regehr, S. R. Duncan, and W. F. Heer., 2003. Grain Sorghum Response to Simulated Drift from Glufosinate, Glyphosate, Imazethapyr, and Sethoxydim.” Weed Technology, 17(2), pp. 261-65.

Category:

• Environmental effects
• Pesticide use

Record ID: 35