News Briefs June 11, 2018


News You Can Use

Advances in crop yields starts with years and years of testing, trial-and-error, and analyzing data. Recently, DuPont Pioneer discovered trends in optimum plant density and yield gains. This week’s briefs cover that research, whether corn can grow too fast, and scouting for corn borer and sulfur deficiencies.

Want to speak with an expert on these or other topics? Contact Kacey Birchmier at

In the News

DuPont Pioneer Agronomy Research Discovers Yield Trends

Analysis of 30 years of corn plant population responses, collected by DuPont Pioneer, shows that modern hybrids benefit from increased plant populations without the previous instability that resulted from higher populations. The responses show that, as agronomic optimum plant density increased, the range for maximizing corn yields also widened…Read more

Can Corn Grow Too Fast?

After nearly a month of days with temperatures above 80°F and 90°F, some corn plants did more growing above ground than below. Pioneer Field Agronomist Kyle Poling said the heat was equivalent to 13 additional growing days in the month of May, which can cause issues with accelerated growing.

“The crop that was planted the last week of April and the first week of May went into the ground under ideal conditions and had a whole lot of heat during the month of May,” Poling said. “Because [the heat] has really pushed the biomass on our corn crop, in many cases we have more biomass above ground than roots below ground” …Hear more

Crop Insights

Scouting and Managing Corn Borer

Based on the heat accumulated in recent days and weeks, adult moths have recently mated, laid eggs and those eggs should be hatching soon, according to Pioneer Field Agronomist Brian Bush. The goal is to control those larvae before the third instar stage, when they are large enough to burrow into the midrib and the stalks…See more

What do Transition Colors Mean in Corn?

As corn grows from the V3 to the V4 stage, color differences can occur, according to Pioneer Field Agronomist Gary Brinkman. These colors can be attributed to fertility issues, different soil types, or in some cases sulfur deficiency. This can be identified by the lower leaf. Often, the lower leaf will show nitrogen deficiencies first, while sulfur deficiencies will manifest in the growing point and the mid-section of the plant…Read more

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