Herbicide Recommendations for Beans: Postemergence Grass Herbicides

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

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

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, 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.

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.
Do NOT use on adzuki beans.
Do NOT apply if rain is expected within one hour after application.

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
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 hr after application.

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 hr after application.
Do NOT use on adzuki, Dutch brown, cranberry, kidney, lima, otebo, small red Mexican, snap and yellow eye beans.