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Table 6-2: Preplant Herbicide Weed Control Ratings

Author: OMAFRA Staff
Creation Date: 25 November 2002
Last Reviewed: 20 June 2008

Pub 75: Guide to Weed Control > Preplant and Postharvest Weed Control > Table 6-2: Preplant Herbicide Weed Control Ratings

Excerpt from 2008 Chapter 6, Publication 75, Guide to Weed Control, Order this publication

Cover of Publication 75, Guide to Weed ControlTable of Contentss

  1. Preplant Herbicide Weed Control Ratings (Table 6-2) (PDF - 39 kb)
  2. Other Preplant and Postharvest Weed Control Tables
    • Non-Selective Herbicides Available for Preplant Site Preparation (Table 6-1) (PDF file - 41 kb)
    • Postharvest Weed Control (Table 6-3) (PDF file - 38 kb)
  3. Other Special Methods of Weed Control
  4. Related Links
Table 6-2. Preplant Herbicide Weed Control Ratings
Preplant Herbicides Annual Grasses Annual Broad-leaves Field Bind-weed Mouse-eared Chickweed Dand-elion Golden-rod Ground-ivy

Horse-
tail

Aim EC 0 ** ? ? ? ? ? ?
Amitrol 240 ** ** a ? 9* a ? 7
More...
Cleanstart Plus1 ** ** 7a 9 7/8d ? 5 0
glyphosate ** ** 7a* 9* 7/8d* ? 5 0
More...
Gramoxone ** ** b b b ? b b
More...
Guardian1 ** ** 7a 9 7/8d ? 5 0
Ignite ** ** 8c ? 8* ? ? 7c
More...

Table 6-2. Preplant Herbicide Weed Control Ratings
Preplant Herbicides Mallow Milk-weed Nut sedge Plan-
tains
Poison-ivy Quack-grass Sow-thistle Canada thistle Vetches
Aim EC 8 ? ? ? ? ? ? ? ?
Amitrol 240 ? a a 8 8 7* a 7* ?
Cleanstart Plus1 8 a 7 9 8 8/9 a 7a 5
glyphosate 5 a 7 9 8 8/9 a 7a 5
Gramoxone b b 0 b b 5* b 0 b
Guardian1 5 a 7 9 8 8/9 a 7a 5
Ignite ? 6c 7c ? ? 8c 8c 8c ?

? - Insufficient information available to make a rating.
* - Ratings with an asterisk indicate the weed is listed on the product label for control or suppresssion.
** - Indicates that most annual weeds will be controlled if emerged.
a - Optimum growth stages for best control of these weeds will not likely be attained prior to planting in early to mid spring.
b - Top growth only, regrowth can be expected.
c - Repeated applications may be necessary.
d - Use higher rates for plants over 15 cm tall or across.

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