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Herbicide Recommendations for Soybeans: Postemergence Grass and Broadleaf Herbicides

Author: OMAFRA Staff
Creation Date: 25 November 2002
Last Reviewed: 10 May 2008

Pub 75: Guide to Weed Control > Soybeans > Herbicide Recommendations for Soybeans: Postemergence Grass and Broadleaf Herbicides

Excerpt from 2008 Chapter 11, Publication 75, Guide to Weed Control, Order this publication

Cover of Publication 75, Guide to Weed ControlTable of Contents

  1. Pursuit + non-ionic surfactant + liquid fertilizer
  2. Cleansweep + liquid fertilizer
  3. Meridian Plus1 (Meridian + Basagran Forté + liquid fertilizer)
  4. Viper1 ( Viper + Reflex + Agral 90 + liquid fertilizer)
  5. Soybean Herbicide Weed Control Ratings (Table 11-1) (PDF file - 133 kb)
  6. Other Soybean Weed Control Recommendations
  7. Stages of Soybean Leaf Development
  8. Related Links

Pursuit + non-ionic surfactant + liquid fertilizer
Trade Name
+ non-ionic surfactant
+ 28-0-0, 10-34-0, or 32-0-0
Active Ingredient
imazethapyr
+ non-ionic surfactant
+ liquid fertilzer
Formulation
240 g/L
 
 
Rate per hectare (active)
0.075 to 0.1 kg/ha
0.25 % v/v
2 L/ha
Rate per hectare (product)
0.312 to 0.42 L/ha
2.5 L/1000 L
2 L/ha
Rate per acre (product)
0.125 to 0.168 L/ac
2.5 L/1000 L
0.8 L/ ac

Precautions

  • Apply when the weeds are up to the 2 true leaf stage.
  • Some rotational cropping restrictions apply (see label, Table 4-3 (PDF - 80K) and Table 4-4 (PDF - 82K)).
  • Use only once per season.

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Cleansweep + liquid fertilizer
Trade Name
Cleansweep (Pursuit + Basagran Forte)
+ 28-0-0, 10-34-0, or 32-0-0
Active Ingredient
imazethapyr + bentazon
+ liquid fertilizer
Formulation
240 g/L + 480 g/L
 
Rate per hectare (active)
0.075 + 0.84 kg/ha
2 L/ha
Rate per hectare (product)
0.312 + 1.75 L/ha
2 L/ha
Rate per acre (product)
0.125 + 0.7 L/ac
0.8 L/ac

Precautions

  • Available as a co-pack containing Pursuit and Basagran Forte.
  • ply postemergence to actively growing weeds in the 2-6 leaf stage.
  • Some rotational cropping restrictions apply (see label, Table 4-3 (PDF - 80K) and Table 4-4 (PDF - 82K)).
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Meridian Plus
Trade Name Meridian Plus (Meridian + Basagran Forte) + 28-0-0 or 32-0-0
Active Ingredient
imazamox + bentazon
+ liquid fertilzer
Formulation
70 WG + 480 g/L
 
Rate per hectare (active)
0.025 to 0.6 kg/ha
2 L/ha
Rate per hectare (product)
36 g/ha + 1.25 L/ha
2 L/ha
Rate per acre (product)
14.5 g/ac + 0.5 L/ac
0.8 L/ac

Precautions

  • Available as a co-pack containing imazamox and Basagran Forte.
  • Apply postemergence to actively growing weeds in the 2-6 leaf stage.
  • Apply from cotyledon to the fourth trifoliate stage of soybeans.

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    Viper + Agral 90 + liquid fertilizer
    Trade Name
    Viper (Viper + Reflex)
    + 28-0-0 or 32-0-0
    Active Ingredient
    imazamox + fomesafen
    + non-ionic surfactant
    + liquid fertilzer
    Formulation
    70 WG + 240 g/L
     
     
    Rate per hectare (active)
    25 g/ha + 0.2 kg/ha
     0.25 % v/v
     2 L/ha
    Rate per hectare (product)
    36 g/ha + 0.83 L/ha
    2.5 L/1000 L
    2 L/ha
    Rate per acre (product)
    14.5 g/ac + 0.336 L/ac
    2.5 L/1000 L
    0.8 L/ac

Precautions

  • Viper is only available in a package containing both imazamox and Reflex.
  • Apply postemergence to the crop after the unifoliate stage.
  • Weeds should be in the 1-6 leaf stage and actively growing.
  • Some rotational cropping restrictions apply (see label, Table 4-3 (PDF - 80K) and Table 4-4 (PDF - 82K)).

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