Nationally, 64% of corn and 59% of soybeans are rated Good to Excellent.
We discuss those ratings in the latest Purdue Crop Chat Podcast, available now at hoosieragtoday.com, with Purdue Extension Soybean Specialist Shaun Casteel and Corn Specialist Dan Quinn. Casteel says that, overall, fields are looking very good. There are some areas of soybean fields that are an off-green color due to flooding, ponding, or saturated conditions from recent rainfalls.
“So, you can catch pretty quick what areas have been struggling. With the rains, depending on how much you got, if you’re filling the root profile, the soil profile, with water, there’s not oxygen there. So, we have some roots that were actually probably dying over the last couple of weeks because there’s too much water. In that you also have an issue with nitrogen supply that’s coming from the soil as well as from nodulation and fixation. So, we get hit on both ends of the spectrum. If it’s dry soil, nodulation and fixation gets hit. If it’s wet on the other side, even cool, we get hit on fixation. So, we’ve certainly got spots in our fields that have this off-green color that are limited on nitrogen.”
With the forecast calling for moist conditions and temperatures in the upper 70s over the next week, Casteel says growers need to be on the lookout for white mold.
“You need to be out there knowing your history. Have you had white mold before? Do you have fields that are coming into flowering to do a preventative spray? So, this is before you see it, but it’s just all the conditions coming into play. Do I want to go in and protect that crop with a fungicide spray? It’s a different chemistry than you typically think of in R3 or R4 spray. This is first bloom, full bloom, spray that’s preventative. So, I think a lot of those fields need to be on the lookout in the coming week to prevent any of that if it all comes together.
“The second part of that is to go back out here in 2-3 weeks and say, ‘OK- do we have any of those foliar leaf diseases that we want to be protecting and watching out for?’ Let’s continue to scout and see what’s out there.”
Hear more from Casteel and Dan Quinn in the Purdue Crop Chat Podcast below: