Such tests will show the presence of adequate amounts of humus, and indicate the acidity content.
"A Living from the Land"
William B. Duryee
For the purpose of ordinary physical examination and testing for acidity, representative soil samples should be taken from several parts of the same soil type, mixed together and a composite sample for testing drawn from the mixture, weighing not less than a pound in each case.
"A Living from the Land"
William B. Duryee
The growth of beneficial bacteria is greatly stimulated in a soil that has had its acidity neutralized by the application of lime.
"A Living from the Land"
William B. Duryee