A soil treatment system, including heat treatment apparatus configured to travel in a forward direction along a plot of ground having a soil surface and configured for disturbing the soil surface and treating associated soil with steam as the heat treatment apparatus travels to provide steam treated soil, and a source of steam in flow communication with the heat treatment apparatus for supplying steam to the heat treatment apparatus. The heat treatment apparatus includes a first heat treatment section having a plurality of rotating blades configured to contact the soil surface and lift and circulate the soil and return the soil to the ground, and a plurality of first steam outlets proximate the rotating blades configured to expose the soil lifted and circulated by the rotating blades to steam from the first steam outlets. The heat treatment apparatus also includes a second heat treatment section having a conveyor configured to receive soil and to return the soil to the ground, a plurality of second steam outlets proximate the conveyor and a blade configured to contact the soil surface and lift the soil onto the conveyor for exposure of the soil on the conveyor to steam from the second steam outlets.
