I planted Burpee's Early & Often corn and it looked like it was doing pretty good. About 3 weeks ago (could be longer) we started to see tassels and the ears started to develop. Then they just stopped. It seems like the growth was stunted. Here are the ears we picked this morning. They are only about 4 - 5" long and there are strips or spots where no kernals developed. Could it be lack of water? It has been dry but I've been watering. Or is it lack of fertilizer? I used Miracle Gro about 3 times this season on the whole garden and everything else is doing well. I also could not find any bugs other than ants on the plants. Any ideas??