Late-season N payback depends on what's been applied
Planned, late-season nitrogen applications are more common today than they used to be. Seed company representatives and agronomists believe modern corn hybrids use a bigger percentage of nitrogen later in the season compared to top hybrids of the 1970s or 1980s.
Tony Vyn, a Purdue University Extension agronomist, says it’s true that modern hybrids use more N later. And while it’s logical to assume that means the later you apply, the better, he hasn’t proved this in his research trials.
Schwarck, Roth earn ICMC scholarship for corn-related research at Purdue
Purdue University grad student Lauren Schwarck and doctoral candidate Richard Roth earned the Indiana Corn Marketing Council’s (ICMC) Gary Lamie scholarship for 2019. Schwarck’s research aims to help Hoosier farmers accurately assess their potassium (K) needs for their crop.
Someday you might use half the fertilizer and still achieve higher yields with corn. That’s what early findings show from ongoing research led by Purdue University Extension agronomist Tony Vyn. A three-year study in silty clay soils near West Lafayette, Ind., moved to the Pinney-Purdue Agricultural Center near Wanatah last fall to see if initial findings differ in the sandier soils of northwest Indiana.
Purdue professor appointed to endowed chair in crop sciences
The Purdue University Board of Trustees has appointed Tony Vyn, professor of agronomy, to the Henry A. Wallace Chair in Crop Sciences. The endowed chair is funded by Corteva Agriscience™, Agricultural Division of DowDuPont.
Purdue University review: Modern corn hybrids are resilient
Modern corn hybrids produce more plant material and take up, on average, the same amount of nitrogen as earlier varieties, in spite of being more crowded and having less nitrogen available per plant, a Purdue University review finds.
Nutrient Balance is Necessary for Higher Global Corn Yields
Ensuring that corn absorbs the right balance of nitrogen, phosphorus and potassium is crucial to increasing global yields, a Purdue and Kansas State University study finds. A review of data from more than 150 studies from the U.S. and other regions showed that high yields were linked to production systems in which corn plants took up key nutrients at specific ratios – nitrogen and phosphorus at a ratio of 5-to-1 and nitrogen and potassium at a ratio of 1-to-1.