"Deeper than average" leaf mulch test plot being mowed by a rotary mower at the Toro Research Center, in Minnesota, in 1954

Raised view of a "deeper than average" leaf cover research plot being mowed by an operator pushing a rotary mower, angled up, the Toro Research Center in Minnesota, in 1954, as part of a leaf mulch study. Plot has containment sideboards due to the heavy leaf cover. Other plots, without boards or visible leaf cover, beyond as well as a fence around the plot area. Gas can in foreground.