Why Are Farmers Adding Rocks to Their Fields?

Some farmers are adding rocks to their fields. They are a special type of rock that lab data suggests will help the environment, balance soil pH and increase crop yield.

STORY AT-A-GLANCE

• The pH of soil influences the growth and productivity of crops grown on the land. Soil pH regulates the availability of nutrients to the plant, so, even if the soil is fertile, unless the pH is appropriate, the plants cannot absorb the nutrients

• Lab data show that adding crushed volcanic rock called basalt or olivine can help sequester c…