Quackgrass is among the perennial weeds which MON 37500 controls. MON 37500 has both foliar and soil activity and can be used alone or in mixtures with most other agrochemicals. MON 37500 is a sulfonylurea herbicide. The mode of action is likely inhibition of acetolactate synthase. Upon application meristematic growth stops immediately.
Affected plants appear dark green and stunted.
This is followed by a reddening of the stem base. The next phase of plant death is usually slowly developing necrosis. Spring wheat also show tolerance. Durum wheat is generally less tolerant and tolerance may be variety specific. Barley and oats are sensitive to applications of MON 37500 at normal use rates and applications to these crops are not recommended.