grass and weed killer

Hey everyone, new to the forum here, hopefully looking for advice on my first food/kill plot I’m located in southern Ontario, in Canada, and have access to a large agricultural property with some forested sections, which butt up against more ag. There’s about a 1/2 acre section of meadow in the...

Sorry if there is already a similar post...I looked before posting but couldn't find one. Short version...what is the best/cheapest spray to kill all grass and weeds (leaving basically just dirt) for my food plot? P.S. I am unable to do a controlled burn.