Mark Jeschke

The 2025 Pioneer Agronomy Research Summary Book is now available online. This Agronomy Research Summary is the latest edition of an annual compilation of Pioneer agronomy information and research results. #anchor_1" target="_blank" rel="nofollow noopener">pioneer.com/us/agronomy-sc…

What crop management options are needed to optimize food grade corn quality? We analyzed the case of yellow food grade corn in the rainfed US Midwest: corteva.showpad.com/share/Hr9Nu6KL… @PioneerSeeds @CortevaUS @markjeschke @alejorzh @JoseLRotundo @dahlke_brian

Harvest is all wrapped up so I got out and ran the Des Moines Marathon today. Unfortunately the heat and sunshine that made for such a good harvest season did not make for a good race

Rolling of corn leaves occurs on extremely hot days, starting in late morning as in this field. You can’t see it, but leaf stomates are also closing. 🔥🌽 Here are 5 things that happen when corn gets too hot. @PioneerSeeds  farmprogress.com/corn/5-things-…

New article: Corn Rootworm - Hatch and Larval Stages. This article discusses egg hatch and larval stages of the CRW lifecycle, including timing of key events, feeding behavior, and environmental factors that can influence survival during these stages. corteva.showpad.com/share/b0BDxQVF…

Excellent collaborative work by @Amaizescience, @JoshNasielski and @corteva.

New article out today: Minimizing Volatilization Loss of Sidedressed Nitrogen in Corn. This article summarizes results of a 3-yr field study, conducted by scientists from the University of Guelph and Corteva Agriscience. corteva.showpad.com/share/iwYBMaI3…

New article out today: Harnessing the Power of Biological Nitrogen Fixation. In this article, I do a deep-dive into BNF – how it works, factors that can enhance or inhibit it, and possible avenues for leveraging it in new ways for crop production. corteva.showpad.com/share/U1VZPMcs…

1:44:02 today, which was good for 10th out of 125 in my age group. I’ll take that.

Wildfire smoke drifted into the U.S. from Canada frequently during the 2023 growing season. Will this become common in the future? farmprogress.com/crops/expect-t…

I remember talking with coworkers back when temps started warming up in late Feb - early March and nervously noting that the soil and weather condition set-up going into the season was a lot like we had 2012. Boy did we flip the script on that one.

There was a fair amount of corn that went into the ground last week. Now a lot of that ground is wet from all the rain over the past few days. This article takes a look at some of the effects of early-season saturated soils on corn growth: corteva.showpad.com/share/BKqBxEjS…

Plant 24 is a go.

Finally! Wordle 1,035 1/6 🟩🟩🟩🟩🟩

@wardynmi Very. It’s the first ever discovery of nitrogen fixation in a eukaryotic organism. Could have huge implications for one day engineering N-fixation into crops like corn.

@markjeschke I imagine this is important?

New organelle just dropped...

Ear Declination Prior to Corn Maturity is something we saw a lot in fall of 2023. Obviously not a good sign, but what does it mean for corn maturity and dry down? I dig into this question on Page 44 of the Pioneer Agronomy Book. corteva.showpad.com/share/SG6K2TBG…

Here you go: the world’s least impressive eclipse photo. I made a quick pinhole camera with a notepad off my desk.

Corn Brace Roots are fascinating. But what functions do they actually serve and what can they tell us about the health and growth of the plant? See Page 41 for a primer on brace roots. corteva.showpad.com/share/SG6K2TBG…

Crown rot in corn is most likely caused by one or more Fusarium species that infect the plant early in the season. I review what we know in Fusarium Crown Rot in Corn on Page 70 of the Pioneer Agronomy Book. corteva.showpad.com/share/SG6K2TBG…