What does a soil test typically measure?

A soil test is designed to assess the composition and health of the soil, providing critical information about its ability to support plant growth. The correct answer is focused on key parameters such as soil pH, nutrient levels, and electrical conductivity, all of which are essential for understanding the fertility and quality of the soil.

Soil pH indicates the acidity or alkalinity of the soil, which significantly affects nutrient availability to plants. Different crops and plants thrive at specific pH levels, making this measurement fundamental for optimizing soil management practices.

Nutrient levels inform growers about the essential macronutrients (such as nitrogen, phosphorus, and potassium) and micronutrients (like zinc and iron) present in the soil. Knowing these levels allows for informed fertilization practices, helping to avoid deficiencies or toxicities that can impede plant growth.

Electrical conductivity measures the salt concentration in the soil, which is important for certain crops and can influence water retention and nutrient uptake. High salinity can be detrimental to plant health, thus monitoring this can help in making management decisions.

In contrast, a soil test does not focus solely on organic matter content, temperature, humidity, or merely the physical appearance of the soil. While those factors can certainly play a role in overall soil health,