
Dan Quinn
Dr. Dan Quinn, Assistant Professor of Agronomy and Purdue Extension Corn Specialist at Purdue University, named Indiana Corn Marketing Council Extension specialist in 2026.
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Sep 23, 2026
Purdue Crop Chat Podcast Ep. 96: Indiana's Harvest Rollercoaster—Floods, Odd Ears and Record Yields
7:31

Eric PfeifferHOST
I've been seeing some... pictures floating around social media of of the uh the ear of corn and it looks like looks like a dumbbell you know i go out there do some curls yep because it looks okay on the ends but the middle of it it's just it's gone yep and a lot of folks saying i haven't really seen that around here but some other folks across the country i saw some folks from nebraska be like oh it's fairly common around here we see it but here in indiana i've never seen anything quite like that
Wildfire smoke's effect on yield, pulse patterns, and nodule know-how | RealAg Radio July 20/26
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4:55speaker_1UNKNOWN
Well, I think it's, first thing we found out is very complex, right? Um, and what we found is that wildfire smoke can have, one, can have negative impacts, and the negative impacts is that it can reflect sunlight, it can reduce solar radiation, photosynthetic active radiation

Dan QuinnGUEST
radiationAnd that can potentially translate to lower photosynthesis rates in the crop, and, and that can be detrimental to the crops.

Dan QuinnGUEST
But if you move it to the flip side of that is that we actually see positive, um, impacts and, and kind of some ways that, that wildfire smoke can positively impact the crop is that one, you know, not only can it reflect sunlight, but it can actually scatter sunlight.

Dan QuinnGUEST
And we see what is known as a diffuse fraction of the photosynthetic active radiation, which is a fancy word to say it actually scatters light, and when it scatters light, um, it actually improves light use efficiency, especially in crops that are a little bit taller and multilayered canopies like corn, where it basically scatters the light and then the light penetrates better in the canopy.

Dan QuinnGUEST
Um, there's actually been some work out of California where they look at, you know, wildfire smoke and its impacts on forests, and they found that some of the forests actually have higher photosynthetic rates after wildfire smoke, and they kind of attribute it, uh, to kind of the improved photosynthetic efficiency and light use efficiency.

Dan QuinnGUEST
Um, another aspect of it too, and, and probably this relates probably most to, to Canada, right, is, is the differences in temperature.

Dan QuinnGUEST
Um, so, uh, when that wildfire smoke comes in, yes, it can reduce sunlight, but it also reduces air temperature, um, and it can reduce air temperature pretty significantly.