Hybrid corn boosts grain yields 89%, nitrogen use efficiency 73% over 70 years

Print Friendly, PDF & Email
corn

During the past 70 years, hybrid corn varieties have increased both yield and nitrogen use efficiency at nearly the same pace, largely by preserving leaf function during grain filling. The Purdue University study’s findings offer strategies for corn breeders who want to continue to improve yields and nutrient efficiencies.

“There’s been a progressive improvement in nitrogen use efficiency in corn hybrids. That’s coming about as yields have increased while modern hybrids were able to capture more and more of the fertilizer nitrogen applied,” said [Tony Vyn, a professor in Purdue’s Department of Agronomy], whose findings were published in the journal Scientific Reports.

Related article:  'Synthetic signalling networks' between GMO plants, bacteria could boost crop yields

Over the last 70 years, genetic improvements have led to an 89 percent increase in grain yields and a 73 percent increase in nitrogen use efficiency from early hybrids to today, the study finds.

“There’s been a plateau in nitrogen fertilizer rates applied to corn in the U.S. since the 1980s,” Vyn said. “But we’re capturing more of the fertilizer we apply so that less is lost while more of the nitrogen captured by the plant is creating grain.”

Read full, original article: Study highlights nitrogen efficiency gains in corn hybrids over 70 years

Outbreak Daily Digest
Biotech Facts & Fallacies
GLP Podcasts
Infographic: Trending green and going great — Every state in the US seeing decreased cases of COVID

Infographic: Trending green and going great — Every state in the US seeing decreased cases of COVID

The U.S. averaged fewer than 40,000 new cases per day over the past week. That’s a 21% improvement over the ...
News on human & agricultural genetics and biotechnology delivered to your inbox.
glp menu logo outlined

Newsletter Subscription

* indicates required
Email Lists