I'm not in Texas, but around here in SC I've seen alot of that this year. And I'm no expert, but if your soil was good than most likely you didn't have enough rain or irrigation. I have a little garden every year, mostly sweet corn, about half an acre, and were the irrigation dosn't reach my corn always looks like that. I do have a problem with worms though, I dont use any pesticides, just cut out the bad spots. I would like to know how to keep the bugs out so that I could sell some locally if anyone knows of something that would not affect the bees, and yes I know that corn is air pollinated but the bees always try to help out.