Everyone has a good answer here. If you are using soil from a source you are not familiar with I would ask for a soil test. Here is a very thorough soil sample from Cornell University that goes beyond just measuring nutrients and pH. Yes it is expensive compared to others but it goes much further:

Soil health analysis packages

Here is one from a private company as well

https://solvita.com/wp-content/uploads/2015/08/Solvita-Soil-Biology-Field-Test-PR.pdf?utm_source=Woods+End%2FSolvita+List&utm_campaign=4e4379b97d-Solvita_August_2015_Newsletter8_18_2015&utm_medium=email&utm_term=0_8d31088072-4e4379b97d-110743937