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Triazine-Resistant Smooth Pigweed (Amaranthus hybridus) Control in Field Corn (Zea mays L.)

Eric D. Birschbach, Mark G. Myers and R. Gordon Harvey
Weed Technology
Vol. 7, No. 2 (Apr. - Jun., 1993), pp. 431-436
Stable URL: http://www.jstor.org/stable/3987625
Page Count: 6
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Triazine-Resistant Smooth Pigweed (Amaranthus hybridus) Control in Field Corn (Zea mays L.)
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Abstract

Studies were conducted for 3 yr to evaluate herbicides and herbicide combinations for triazine-resistant smooth pigweed (TR-AMACH) control in field corn. Of the PRE treatments, combinations of atrazine plus acetochlor, metolachlor plus dicamba, and atrazine plus alachlor provided the most complete control of this weed (77 to 81%). The best early postemergence (EP) combination was pendimethalin plus atrazine plus dicamba (93% control). Pyridate plus atrazine applied POST provided a four-site average of 98% control. The most effective sequential herbicide treatments consisted of either metolachlor or pendimethalin PRE followed by POST treatments containing either pyridate, thifensulfuron, bromoxynil, or dicamba.

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