If you have another soil test done, it will
tell you how much lime per 100 sq ft
(or per 1000 sq ft, or similar) to add,
if any, and what other nutrients your soil
needs.
If you prefer to guess, lime, dolomite lime,
and wood ash will normally all raise pH,
but no one can say for sure what your
particular mix of peat and native soil needs
to grow better tomatoes. (So whatever you
try, do it in moderation. A little bit of lime
or gypsum cultivated in is insurance against
blossom end rot when the fruit start to ripen,
too, independent of achieving a soil pH that
tomatoes are comfortable with.)
A good article on pH and container mixes:
http://www.oan.org/displaycommon.cfm...barticlenbr=20