Methalpropalin is a dinitroaniline herbicide used to control broad-leaf weeds. Research samples of methalpropalin have been formulated prior to 1977 by Lilly Research Laboratories. Methalpropalin's mode of action is to disrupt microtubule formation; this makes its HRAC classification Group D (Australia), Group K1 (global) and Group 3 (numeric). Little study has been done on methalpropalin.
See also Ethalfluralin, a closely related herbicide
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