confused corn?

the ragweed, poke weed, and thistles ( first three ) in the berm of the cornfield by the supermarket are all showing signs of autumn...and the corn is ripening..ripening in ways that may show that the engineers may not have the handle on genetics they think they do...all these plants are admittedly in the same row ( i was not planning on wading out to the center of the field...among other things i am not trying to damage the crop...just observing and edifying myself as best i can )...still, there is no uniformity of manufacture here...the plants in the fourth through seventh photos are spaced approximately two inches apart...even this close, one has produced an ear approximately nine inches long ( which side of an ear on the hoof is the proper side to measure? so i will admit approximations ) and the other ten...the plants in the eighth through tenth photos are about a foot apart and both have produced twelve inch ears...the plants in the eleventh through fourteenth photos are six inches apart...one has produced a twelve inch ear, the other a very stunted ear five inches long at best...same row...same crop...same general environmental conditions ( although, having looked for and found microclimates in my own yard on could question uniformity of conditions ) and variable results from what is at least hybrid corn if not fully engineered ( i can find no crop signs to tell me if we are dealing with monsanto, bayer, dekalb, or whomever )...i have to think that climate plays a distinct role and that genetic engineering ( and i mean spliced genes...all crops have been engineered through artificial selection by generations of agriculturalists ) doesn't guarantee much of anything id conditions aren't somewhere in a "normal" range for the crop...finally the teosinte in the last three photos is not confused...it is doing what it needs to do..have i mentioned i have found silks?