Spring Sweet Corn

I irrigate the corn patch with water from my high tunnel aquaponics system.  I arranged things such that when I drain off nutrient-rich water from the system, it flows downhill through the corn furrows.  Here's what the patch looked like 30 days ago:

And here's what it looks like now: 

There are 3 varieties of corn in the patch (all of which are in the "su" category of sugar content, and as such can be planted in close proximity to one another--a practice not recommended for mixed categories):

left = Merit
middle = Bi-Licious Hybrid (smaller because it was planted about 10 days after the others)
right = Honey & Cream