Lime increases the PH level of your soil, lowering the acid level and increasing growth and production in most vegetables, especially tomatoes and peppers.
We recommend a cup of Ag Lime for every tomato/pepper plant. Just work into the soil, there is no danger of "burning" the transplant.
Dolomite Lime has the same effect on PH levels, but has magnesium, which soils in Oregon and Washington do not need. 4 pound bag