Herbicide Recommendations for Beans:
Postemergence Grass Herbicides

Pub 75: Guide to Weed Control > Beans > Postemergence Grass Herbicides

Excerpt from 2010-11 Publication 75, Guide to Weed Control, Order this publication

Cover of Publication 75, Guide to Weed ControlTable of Contents

  1. Assure II + Sure-Mix
  2. Excel Super
  3. Poast Ultra + Merge
  4. Select + Amigo
  5. Beans (Adzuki, Dry, Lima and Snap) Herbicide Rating Table (Table 7-1) (PDF 92 kb)
  6. Other Bean Weed Control Recommendations
  7. Related Links
Assure II + Sure-Mix
Trade Name Assure II + Sure-Mix
Active Ingredient
quizalofop-p-ethyl
+ oil concentrate
Formulation
96 g/L
 
Rate per hectare (active)
0.036 to 0.07 kg/ha
0.5% v/v
Rate per hectare (product)
0.38 to 0.75 L/ha
5 /1000 L
Rate per acre (product)
0.15 to 0.3 L/ac
5 L/1000 L

Precautions

  • Apply to emerged annual grasses and volunteer cereals in 2 leaf to tillering stage and volunteer corn and quackgrass in the 2-6 leaf stage.
  • For use on all market classes of edible beans listed in Table 7-1. Beans (Adzuki, Dry, Lima and Snap) Weed Control Rating, plus mung beans.
  • Use the 0.38 L/ha (0.15 L/ac) rate of Assure II for control of volunteer corn, volunteer cereals and green foxtail.
  • The 0.5 L/ha (0.2 L/ac) rate of Assure II will suppress quackgrass and also control barnyard grass.
  • Use the 0.75 L/ha (0.3 L/ac) rate of Assure II for control of quackgrass.
Excel Super
Trade Name
Active Ingredient fenoxaprop-p-ethyl
Formulation 80.5 g/L
Rate per hectare (active) 0.054 kg/ha
Rate per hectare (product) 0.67 L/ha
Rate per acre (product) 0.27 L/ac

Precautions

  • Apply POST when annual grasses are in the 2-5 leaf stage.
  • Apply POST to all dry bean (Phaseolus vulgaris) species listed in Table 7-1. Beans (Adzuki, Dry, Lima and Snap) Weed Control Ratings, page 87.
  • Do NOT use on adzuki beans.
  • Do NOT apply if rain is expected within one hour after application.
Poast Ultra + Merge
Trade Name Poast Ultra + Merge
Active Ingredient
sethoxydim
+ surfactant
Formulation
450 g/L
 
Rate per hectare (active)
0.15 to 0.5 kg/ha
 
Rate per hectare (product)
0.32 to 1.1 L/ha
1 to 2 L/ha
Rate per acre (product)
0.13 to 0.45 L/ac
0.4 to 0.8 L/ac

Precautions

  • Apply POST when annual grasses and volunteer cereals are in the 1-6 leaf stage and quackgrass is in the 1-3 leaf stage.
  • Apply POST to Adzuki and all dry bean (Phaseolus vulgaris) species listed in Table 7-1. Beans (Adzuki, Dry, Lima and Snap) Weed Control Ratings, page 87.
  • Maximum rate on snap beans is 0.65 L/ha (0.26 L/ac).
  • Use the intermediate rate (0.47 L/ha) for volunteer spring cereals.
  • Use the high rate (1.1 L/ha) for quackgrass.
  • Thorough preplant tillage will ensure more uniform quackgrass emergence. Follow with a cultivation 7 days after treatment in wide row crops.
  • Do NOT apply if rain is expected within one hour after application.
Select + Amigo
Trade Name Select + Amigo
Active Ingredient
clethodim
+ surfactant
Formulation
240 g/L
  
Rate per hectare (active)
0.03 to 0.046 kg/ha
0.5 % v/v
Rate per hectare (product)
0.125 to 0.19 L/ha
5 L/1000 L
Rate per acre (product)
0.05 to 0.076 L/ac
5 L/1000 L

Precautions

  • Apply POST when annual grasses and volunteer cereals are in the 1-6 leaf stage.
  • Do NOT apply if rain is expected within one hour after application.
  • Do NOT use on adzuki, Dutch brown, cranberry, kidney, lima, otebo, small red Mexican, snap and yellow eye beans.

Related Links

 


For more information:
Toll Free: 1-877-424-1300
Local: (519) 826-4047
E-mail: ag.info.omafra@ontario.ca
Author: OMAFRA Staff
Creation Date: 25 November 2002
Last Reviewed: 17 June 2010