Look at these photos even though they dont show everything real clear. Ill try to describe what is going on. This is a 2nd year cornfield and last year some of it got drowned out. This year the farmer worked the drowned out spots with a field cultivator and than no-tilled the field. It was planted on same day, you can really see a difference in height and how much greener the plants appear where the field cultivator went. What is nice about this field is the drowned out portions are kinda all over and jaged. The appearnce of the corn follows those patterns.