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Vol. 21, No. 7, May 25, 2006
 
Herbicide selection for postemergence weed control in corn
Jim Kells, Kathrin Schirmacher and David Hillger
Crop and Soil Sciences
 
Table 1. Selected characteristics of several postemergence herbicides for (a) conventional corn and (b) herbicide resistant corn hybrids.

a An asterisk (*) indicates rotation restrictions at normal crop rotation intervals.

b Crop Tolerance: 1=Minimal risk of crop injury; 2=Crop injury can occur under certain conditions; 3=Severe crop injury can occur. Follow precautions under Remarks and Limitations in E-434 and on the label; 4=Risk of severe crop injury. Recommended only in rescue situations.

c A double asterisk (**) indicates and effectiveness rating of good or excellent.

d Before tassel emergence.

e Canopy closure.

f Annual grass suppression (Refer to E-434 for details).
g Controls certain foxtail species (refer to E-434 for details).

h Apply only to Liberty resistant (Liberty Link) corn hybrids.

i Apply only to imidazolinone resistant (Clearfield) corn hybrids.

j Apply only to glyphosate resistant (Roundup Ready) corn hybrids. See Weed Control Guide for Field Crops (E-434) Table 10 for glyphosate products registered for postemergence application in Roundup Ready corn.

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