A.\u00a0 It tells me that the extended period of wet we had a week or so ago helped to bring on our rust, that has been much delayed this year.<\/span><\/p>\n B.\u00a0 It tells me that all corn across the southern Coastal Plain is currently at risk for infection.<\/span><\/p>\n C.\u00a0 It tells me that even though there is currently not a whole lot of rust to be found, such could change quickly with our recent passing storms and high humidity.<\/span><\/p>\n \u00a0<\/span>What would I tell growers?\u00a0 Please let corn growers in SE and SW districts know that rust has been found, but still at low levels and do not panic.\u00a0 Tell them that corn already into dough\/dent stages should not need to be sprayed for rust.\u00a0 Tell them that corn in late milk stage is likely safe as well.\u00a0 Tell them that corn at early milk, pollination\/silking, and tassel is likely at risk.\u00a0 Tell them that Tebuconazole is a “good” rust material with a protective window of about 2 weeks.\u00a0 Domark (tetraconazole) is also a good-single mode of action product. Tell them that mix-ed mode of action products like Aproach Prima, Headline AMP, Priaxor, Stratego YLD, and Trivapro, to name but a few, have a longer protective window (3 weeks or so) and likely broader-spectrum activity.\u00a0 Tell them that if they are going to spray a fungicide, sooner is better.\u00a0 The more disease in a field, the harder to control.<\/span><\/p>\n \u00a0<\/span>Tell them that even if they don’t spray, they may not have a problem with rust.\u00a0 But do they want to gamble on that?\u00a0 Deciding on spraying a more-expensive fungicide or a less-expensive fungicide can be tough.\u00a0 Two things to consider:\u00a0 1)\u00a0 How are your yields looking?\u00a0 How much do you want to protect it.\u00a0 2)\u00a0 What growth stage is your corn, the older the corn, the less risk to disease.<\/span><\/p>\n
![\"\"](\"https:\/\/site.extension.uga.edu\/plowpoints\/files\/2019\/06\/IMG_28441.jpg\")
<\/a>