I work in aged cow pooh at planting, then side dress with 13-13-13 when the sweet corn is about 12"tall. Sometimes use some lime to keep the ph 1/2 way decent.
Garden sets next to a hay field....used to just pull the fertilizer spreader real close and let her rip then swing back around through the yard. Haven't fertilized in 3 years now and am thinking about picking up some triple 13....if they still stock it somewhere in bags. :lol2: