To test for alkalinity: Put a few drops of cider vinegar to the soil. If it fizzes, it is alkaline. Use peat moss to reduce alkalinity.
Source: Reader's Digest 1001 Hints and Tips For Your Garden
By Robyn Fed from Hampton, TN
ThriftyFun is one of the longest running frugal living communities on the Internet. These are archives of older discussions.
By testing your soil in your lawn every 3-4 years, you can keep on track if your lawn needs to have nitrogen added or not. Nitrogen is the key nutrient needed for a thick, green lawn.