I am going to plant some potatoes in two/three weeks, but my soil's pH is around 6.8, which is not very suitable for them. I would like to know if there is a way to lower the pH in two/three weeks in a relatively cheap way.
The soil is more clay than sand; I sprinkled some sand bags and cow dung fertilizer so it became a little better, but it still not a perfect balance. I would like to plant Japanese Baron potatoes directly into the soil. Its just a one row 7m x 1m area