Design Layout

The field under study is composed of Drummer soil and is 40 acres in area.  There is very little slope. 

Two tiles under study were placed at two feet in depth with a spacing of 50 feet.  Two tiles were placed at a spacing of 100 feet and a depth of three feet.  A fifth tile was placed at a depth of four feet and a spacing of 100 feet.  Each of these tiles contained buffer tiles on either side. 

Illustrations: