The researchers studied corn stover leftovers and soil from making ethanol to see if they could be composted effectively. They tested moisture levels, solid contents, and other composting characteristics. The reject stover had lower moisture and solid levels compared to the soil stover. They found that both materials had lots of volatile material, suitable for composting. Reject stover had lower density and more air space than soil stover, making it good for compost mixes. Soil stover had a higher water-holding capacity due to its finer texture. Both materials had suitable carbon to nitrogen ratios for composting. Mixing soil stover with reject stover didn't affect airflow much. In conclusion, both reject stover and soil stover can be composted effectively, with reject stover being a good choice for mixing with other materials for composting.