Behind my property is a 125 acre corn field and I became interested in doing some of my own corn testing after seeing the farmer's feed-corn crop fail last growing season because of the lack of rainfall and chemical fertilizers used in the field.
I found some certified organic sweet corn seeds at a local seed supplier and set up two different "test areas" in my backyard. One area was amended native soil using "Scotts products" and the other area was heavily amended using Howard's organic bed preparation formula that included compost, volcanic rock powders, and sugars.
When I planted the seeds, the "Scotts area" was simply hoed into rows and the seeds were covered up at a depth of about 2 inches like corn is normally planted.
In the organic area, I planted the seeds slightly differently to help them germinate. I sharpened a stick that was about the same diameter as the corn seeds and poked it into the soil in rows, then dropped a seed in each hole. The kicker was that I back-filled each of the tiny holes with "Rabbit Hill Farms" earthworm castings to help "jump start" the germination.
Here is a comparison of the difference using a bottle of Garret Juice Plus for a size reference:
Scotts area:

Not bad, but the chemicals in the Scotts products have taken their toll on that corn area.
Dirt Doctor formula prepared area:

The difference is quite stunning! Almost TWICE the height!
I will be most interested to see if the organic corn plants grow more than the normal 2 ears per plants VS the "Scotts plants". I suspect that they will. {chuckle}
Note that the "Scotts area" had far more weeds..