What does a low pH number indicate?

A low pH number indicates acidity in a substance, specifically in soil or a solution. The pH scale typically ranges from 0 to 14, where a value of 7 represents neutrality. Values below 7 signify acidic conditions, while values above 7 indicate alkalinity. This property is significant in agriculture and pest management because soil pH can affect plant health, nutrient availability, and the activity of certain pesticides.

Understanding the pH level is crucial for determining the right conditions for plant growth and for making informed decisions about soil amendments and treatments that may be necessary to optimize growth conditions.