In my picture above the center of the rear axle on the Super 77 is 27.5" off the ground the top of the cast tub the engine sets inside is 37" off the ground. 

So you have some that is about this tall and some that is taller.

Might also need to look at any low hanging steps or other items that hang down off the tractor  and could potentially strike plants in the row breaking them off.

Looks like you might have a very narrow window to get through the tallest corn. Not sure what your rain situation has been but having it knifed in is probably better than dribbling especially if your prone to  flooding /ponding water.

Some get  concerned about turning on the ends. I usually over plant my end rows a little (plant field first and end rows last) to account for the extra destruction when side dressing. Yes it's sickening to run over tall corn when your in there but in a week and especially by harvest it's hard to tell you were running much down.  Keep a careful eye open for breaking any off going through the field.

Good luck let us know how it went.

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