<human>:  Do Sweet Potatoes prevent other plants from growing in their place?
<bot>: Yes, Sweet Potatoes prevent other plants from growing in their place. When sweet potato plants decompose, they release a chemical that prevents germination in their soil. Farmers will work to ensure that all parts of a sweet potato plant are out of the field before trying to grow in it again, so they will work to ensure that all parts of a sweet potato plant are out of the field.