MONROE - The four soil health principles were outlined at the "Cover Crops for Soil Health" field day on Oct. 21 northwest of Monroe. Principles included keeping the soil covered as much as possible, disturb the soil as little as possible or reduce tillage, plant diversity increases diversity in the soil, and to keep living roots in the soil feeding the soil all year round. The individual species of cover crops planted at the plot were dug to examine their unique root structure.