To test the soil for alkalinity, put the same amount of soil into the jar and add 1 cup of white vinegar. Cap the jar and shake it well. If the mixture reacts with the vinegar by fizzing, the soil is highly alkaline.
To test the soil for alkalinity, put the same amount of soil into the jar and add 1 cup of white vinegar. Cap the jar and shake it well. If the mixture reacts with the vinegar by fizzing, the soil is highly alkaline.