So in an area of about 4ft by 12ft you could have 36 corn plants,and some good corn plants like "incredible" will produce two ears per plant in a good growing season with proper fertilizer.That's up to 72 ears of corn.
Corn loves nitrogen so when it start growing about 5-6 inches tall throw some around the plants then when it starts "tassel ling" do it again.
Well drained soil works fine My garden is well "drained". Actually a well drained garden does the best.
bump
thanks