Table 2.2-9. Herbicide effectiveness on perennial broadleaf weeds

Performance ratings are based on seasonal control from early-season application in corn.

Weed control rating:
10 = 95-100%
9 = 85-95%
8 = 75-85%
7 = 65-75%
6 = 55-65%
N = Less than 55% or no control

**Table 2.2-9. Herbicide effectiveness on perennial broadleaf weeds.**
Soil-applied
Herbicide	Herbicide Group (Mode of Action)	Canada Thistle	Dan- delion	Dew- berry species	Dock species	Hedge Bind- weed	Hemp Dog- bane	Horse- nettle	Jerusalem Artichoke	Milk- weed	Poison Ivy	Poke- weed	Mug- wort
Ratings based on 1.6–2 lb/A rate. For use on Roundup Ready corn varieties only. Glyphosate-containing products include Roundup, Touchdown, Durango, and many others; see Table 2.2-1a.
Atrazine¹	5	7	7	N	7	6	N	N	6	N	6	6	N
Mixture
Atrazine + Princep	5/5	7=	7	7	7+	7	N	7	6	N	7	7	N
Postemergence
2,4-D	4	7+	8	6	7+	8	7	6	7	6	7	7	6
Accent	2	6	N	8	N	7	6	6	6	6	?	7	N
Atrazine¹	5	6	6	6	7	7+	6	6	N	N	6	6	N
Beacon	2	7	6	N	?	7	6	7	8	7	?	7	6
Callisto	27	8	7+	?	?	?	7	7+	?	7	?	7	?
Clarity/Banvel	4	8	7+	6	8	8+	7	7	8	6	7+	6	7+
Glyphosate²,³	9	8+	7	8	8	7+	8	7	8	8	8	8	7
Laddok	5/6	8	7	N	7+	7+	6	7	6+	N	7	6	N
Marksman	4/5	8+	8	6	8	8+	7	8	8	6	7+	7	7+
Starane	4	N	N	N	N	8	8+	N	N	N	N	N	N
Stinger	4	9	7	N	8+	N	N	6	9	N	7	N	8
Mixtures
Accent + Clarity/Celebrity	2/4	8	8	8	7	8	7	7+	8	7	7	8	7+
Beacon + Clarity or 2,4-D/NorthStar	2/4	8+	8	6	7	8	7	8	8	7	?	8	7+
Celebrity Plus	2/4	8	8	8	7	8	7	7+	8	7	7	8	7+
Curtail	4/4	9	8	6	8+	8	7	6	9	6	7	7	8
Distinct/Status	4/19	8+	8+	6	8	8+	7	7	8	7	7+	8	7+
Spirit + Clarity or 2,4-D	2/4	8+	8	6	7	8	7	7+	8	7	?	8	7+
Yukon	2/4	8+	8	6	7	8	7	7+	7	8	?	8	7+

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