News Briefs July 22, 2019


News You Can Use

Today’s farmers must juggle a plethora of competing management decisions in overlapping timeframes. Incorrectly identifying a corn disease can cost time, money and yield if inadequately treated. Pioneer agronomists have the knowledge to guide growers through these decisions. 

This week’s briefs cover managing second-generation corn borer, correctly identifying corn disease and corn irrigation termination. 

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

Crop Insights

Second Generation Corn Borer

The second generation of corn borer is expected to emerge the week of July 21. Emergence starts the one- to two-week window for controlling second generation borers before they mate and lay eggs. Once larvae hatch, they’ll begin to feed on unprotected leaves before burrowing into stalks…Hear more

Identifying Different Corn Diseases

Correctly identifying foliar diseases is the first step to managing corn disease. Some common corn diseases, such as physoderma brown spot, are minor economic threats, not requiring treatment. Others, such as Northern corn leaf blight, are significant threats and require immediate attention. Correctly identifying the disease makes treatment decisions much easier…Hear more

When to Stop Irrigating Corn

The quick answer on when to stop irrigating corn is at the black layer. There are a few indications leading up to this that help determine the best time for those last few irrigations. When corn begins to dent all the way up to the cob, it will be about 20 days to black layer and the crop will require around 4 inches of water to reach full yield potential…Hear more

In the News

Yield-boosting Corn Gene Identified at University of Illinois in Partnership with Corteva Agriscience

A decade-long public-private partnership between Corteva Agriscience and the University of Illinois has borne fruit with the discovery of the NAC7 corn gene, which could boost the yields of today’s elite hybrids with no added inputs. The gene controls a key piece of senescence, or seasonal die-back, in corn. When the gene is turned off, field-grown hybrids yielded 4.6 bushels more per acre on average than standard corn. 

Comparing high- and low-protein corn lines showed that the high-protein lines stayed greener longer into the season. With more time green, the plant continues photosynthesizing and putting energy toward developing grain. But, until now, no one knew the specific gene responsible for the stay-green trait in corn…Read more

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