I learned recently that the preplant incorporated (PPI) herbicide ethalfuralin (Sonalan HFP) was labeled for use in hemp and stevia. See below for the CA/NY supplemental label or download it from your preferred label website.
Sharing a link to an upcoming seminar on a broad screening of annual bluegrass (Poaannua) resistance to herbicides. This is related to aUSDA Specialty Crop Research Initiative grant called "ResistPoa".