Researchers Are Working on a Magical Corn Crop That Doesn’t Need Fertilizers
Magic mucus, to be precise.
Researchers Are Working on a Magical Corn Crop That Doesn’t Need Fertilizers
Magic mucus, to be precise.
Nitrogen is essential for crops to grow, and it’s abundant in the air, but plants have trouble getting it. Some, like legumes, are able to house bacteria that can transform nitrogen in the air into a form the plant can use; others, including important crops like corn, wheat, and rice, can’t do this, instead requiring vast amounts of fertilizer. But what if there was another way?
Researchers at the University of California, Davis have managed, after many years of searching, to find a variety of corn that’s able to house those helpful bacteria, just like legumes. This ability is called “fixing” nitrogen, and if the researchers can figure out how to cross-breed with modern corn to give that same ability, we could have a major achievement for farmers and the environment.
Corn, like most other plants, sucks up nitrogen from the ground, but does not provide a home for the bacteria that “fix” it into a form the plants can use. Legumes, which do “fix” nitrogen, form little knobbly nodules on their roots for the bacteria, but nobody has yet been able to figure out how to get corn to do the same. (Though many are trying.)
Without that ability, to grow corn in the quantity that it needs to be grown today, farmers are forced to drench their corn in fertilizer, which contains nitrogen. This is, frankly, a major issue: according to the USDA, somewhere between 40 and 80 percent of fertilizer is not actually taken in by the plants, but instead runs off into the environment. An excess of fertilizer is a nasty problem; when it runs into lakes and ponds, it spikes a huge growth in aquatic plants, which suck the oxygen out of the environment, literally choking the ecosystem.
But the California researchers discovered a deeply strange, sort of oogy variety of corn in the Sierra Mixe region of Mexico, in the state of Oaxaca. Mexico is the site of the domestication of corn; there are thousands of different varieties, some with ancient history and wildly different appearances and uses.
This particular corn grows very slowly but very tall, about a third taller than conventional corn crops. But it also grows these strange above-ground roots which never touch the ground; they look sort of like spider legs. Those roots secret a mucus-type substance, clear and thick and sticky, which provides the sort of low-oxygen, high-sugar environment that a certain treasured guest loves. The corn, in short, creates its own home for nitrogen-fixing bacteria.
The discovery is potentially enormous: if this corn can be cross-bred with conventional corn (probably through something like CRISPR, a genome editor which makes this sort of thing much quicker and more precise), it could potentially give conventional corn that same strange mucus-y aerial roots. A corn crop with the ability to fix nitrogen would, very literally, change the world for the better: it would dramatically reduce the amount of fertilizer needed. Also: what a good weird corn!
Follow us
This work is licensed under a Creative Commons Attribution-NoDerivatives 4.0 International License.
Want to republish a Modern Farmer story?
We are happy for Modern Farmer stories to be shared, and encourage you to republish our articles for your audience. When doing so, we ask that you follow these guidelines:
Please credit us and our writers
For the author byline, please use “Author Name, Modern Farmer.” At the top of our stories, if on the web, please include this text and link: “This story was originally published by Modern Farmer.”
Please make sure to include a link back to either our home page or the article URL.
At the bottom of the story, please include the following text:
“Modern Farmer is a nonprofit initiative dedicated to raising awareness and catalyzing action at the intersection of food, agriculture, and society. Read more at <link>Modern Farmer</link>.”
Use our widget
We’d like to be able to track our stories, so we ask that if you republish our content, you do so using our widget (located on the left hand side of the article). The HTML code has a built-in tracker that tells us the data and domain where the story was published, as well as view counts.
Check the image requirements
It’s your responsibility to confirm you're licensed to republish images in our articles. Some images, such as those from commercial providers, don't allow their images to be republished without permission or payment. Copyright terms are generally listed in the image caption and attribution. You are welcome to omit our images or substitute with your own. Charts and interactive graphics follow the same rules.
Don’t change too much. Or, ask us first.
Articles must be republished in their entirety. It’s okay to change references to time (“today” to “yesterday”) or location (“Iowa City, IA” to “here”). But please keep everything else the same.
If you feel strongly that a more material edit needs to be made, get in touch with us at [email protected]. We’re happy to discuss it with the original author, but we must have prior approval for changes before publication.
Special cases
Extracts. You may run the first few lines or paragraphs of the article and then say: “Read the full article at Modern Farmer” with a link back to the original article.
Quotes. You may quote authors provided you include a link back to the article URL.
Translations. These require writer approval. To inquire about translation of a Modern Farmer article, contact us at [email protected]
Signed consent / copyright release forms. These are not required, provided you are following these guidelines.
Print. Articles can be republished in print under these same rules, with the exception that you do not need to include the links.
Tag us
When sharing the story on social media, please tag us using the following: - Twitter (@ModFarm) - Facebook (@ModernFarmerMedia) - Instagram (@modfarm)
Use our content respectfully
Modern Farmer is a nonprofit and as such we share our content for free and in good faith in order to reach new audiences. Respectfully,
No selling ads against our stories. It’s okay to put our stories on pages with ads.
Don’t republish our material wholesale, or automatically; you need to select stories to be republished individually.
You have no rights to sell, license, syndicate, or otherwise represent yourself as the authorized owner of our material to any third parties. This means that you cannot actively publish or submit our work for syndication to third party platforms or apps like Apple News or Google News. We understand that publishers cannot fully control when certain third parties automatically summarize or crawl content from publishers’ own sites.
Keep in touch
We want to hear from you if you love Modern Farmer content, have a collaboration idea, or anything else to share. As a nonprofit outlet, we work in service of our community and are always open to comments, feedback, and ideas. Contact us at [email protected].by Dan Nosowitz, Modern Farmer
August 9, 2018
Modern Farmer Weekly
Solutions Hub
Innovations, ideas and inspiration. Actionable solutions for a resilient food system.
ExploreExplore other topics
Share With Us
We want to hear from Modern Farmer readers who have thoughtful commentary, actionable solutions, or helpful ideas to share.
SubmitNecessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
Any cookies that may not be particularly necessary for the website to function and are used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies.