The first southern rust of the year has just been detected in Coffee County. If your corn has reached the hard dough stage, you are good; if you are at the tassel, silking, or pollinating stage, I would consider spraying. Single-mode-of-action products (Tilt, Domark, Teb) will give about 2 weeks of protection. Mixed-mode-of-action products (Headline AMP, Veltyma, Trivapro) should give 3 weeks of protection. The weather now is quite favorable for infection and spread.