[familyop]

"That being said, I use Roundup on the weeds in the alley and vinegar on the weeds in the play area."

I've considered trying a vinegar-water mix to lower pH in garden soil a little (to counter alkali by about 1). Think that'd work?

[HereInTheHeartland]

Vinegar is probably pretty weak. Maybe this would help:

http://hubcap.clemson.edu/~blpprt/lowerpH.html

[Jeff Chandler]

I've considered trying a vinegar-water mix to lower pH in garden soil a little (to counter alkali by about 1). Think that'd work?

I think it might take too much of it to affect the soil.