If no rain occurs after application, a light harrowing or rotary hoe operation may destroy emerging weed seedlings and help active the herbicide. Spartan will not control weeds once emerged. Follow the following crop rotation guidelines when rotating crops the year following Spartan application. Canola 24 Sugarbeet 24 Crops with rotational restrictions greater than 12 months after Spartan application are the result of crop injury. For rotation to other crops not listed above, refer to the Crop Rotation Restriction Section of the 1999 North Dakota Weed Control Guide, page 116-117 or federal label.
Authority contains the same active ingredient as Spartan.
DuPont has rights to market Authority only in soybeans. Weed spectrum has been expanded to include biennial wormwood, marshelder, black nightshade, Russian thistle, and witchgrass. Research initiated to explore fall applications which will utilize winter moisture for activation. Allow additional mixing time, up to 10 minutes, to allow granules to completely dissolve or can pre-slurry with warmer water to speed up mixing time. Once granules are suspended, normal settling of small flakes may occur when agitation is stopped.