The study looked at how different types of biochars affect soil microbes. They used biochars made from wood with different particle sizes. The researchers found that biochars with high surface area and pores can help soil microbes. After 56 days, they saw more fungal colonies on the biochar surfaces and in larger pores. The soil stuck to the biochar particles, changing the surface area available to microbes. Overall, the study showed that biochars can impact soil microbial activity in different ways.