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Iowa’s Farmers – and American Eaters – Need a National Discussion on Transforming U.S. Agriculture

Insights + Opinion
Iowa’s Farmers – and American Eaters – Need a National Discussion on Transforming U.S. Agriculture
Strips of native prairie grasses planted on Larry and Margaret Stone's Iowa farm protect soil, water and wildlife. Iowa State University / Omar de Kok-Mercado, CC BY-ND

By Lisa Schulte Moore

Iowa's first-in-the-nation caucuses bring the state a lot of political attention during presidential election cycles. But in my view, even though some candidates have outlined positions on food and farming, agriculture rarely gets the attention it deserves.


As a scientist at Iowa's land-grant university, I believe our state is at the forefront of redefining what agriculture could be in the U.S., and addressing environmental and economic challenges associated with the extensive monocultures that dominate our current system. I think these conversations should be at the forefront nationally. After all, everyone needs to eat, so all Americans have a stake in the future of farming.

As Iowa Farms, so Farms the Nation

Iowa is a leading global producer of corn, soy, pork, beef, eggs, ethanol, biodiesel, biochemicals and agricultural technology. Because it is home to just 3.2 million people, Iowa farmers export the vast majority of what they produce. Most multinational agricultural businesses have Iowa offices, and the state also has considerable influence on U.S. farm bill legislation.

Iowans are also acutely aware of the challenges of modern agriculture, which affect their lands and livelihoods. They include soil degradation, water contamination, flooding and loss of carbon and habitat for native species.

Farmers understand these effects, and many are actively working to reduce them, as operational, financial and social conditions allow. One example in which I am involved is the STRIPS project, in which scientists, farmers, land owners and others are partnering to test the effects of seeding narrow strips with native prairie plants within and around corn and soybean fields.

Over the last 13 years, we have shown that prairie is a valuable tool for protecting water supplies and providing habitat for wildlife, including pollinators. Planting just 10% of farm fields – often in the least productive zones – with stiff-stemmed native prairie grasses helps hold water and sediment in place, reducing erosion and nutrient loss from fields. The strips also contain flowering plants that support birds and insects, including pollinators and natural enemies of crop pests.

This approach can turn low-yielding acres into an opportunity to reduce use of inputs such as fertilizer and pesticides. Today there are nearly 600 acres of prairie strips on about 5,000 acres of cropland on 66 farms across in six Midwestern states. My colleagues and I expect these numbers to grow dramatically now that the U.S. Department of Agriculture is supporting prairie strips as a conservation tool.

Iowa State University scientists are working with industry to create sensors and computer models that enable farmers to manage their fields for improved outcomes. They also are developing supply chain tracking systems that will allow consumers to use a phone app to get information about the farm that grew or raised a product before they purchase it.

Many groups are involved in these efforts. The Iowa chapter of The Nature Conservancy is working with agricultural retailers on improving fertilizer management. Collaborations of farmers, crop breeders and food suppliers – facilitated by organizations like Practical Farmers of Iowa – are fueling a renaissance in the production of small grains like oats and rye.

Speeding up the Transition

A decade ago, my colleagues and I brought national, state and local leaders together for a dialogue on the future of Iowa agriculture. While we did not capture all the details, we largely anticipated this gradual shift toward more economically and environmentally sustainable farming methods.

As we see it, macro-scale forces are driving this transition. Global commodity markets reward efficient production, requiring farmers to do more with less. Americans are demanding stronger action to protect the environment. Federal farm policies are increasingly encouraging conservation and soil health. And new technologies are enabling farmers to seed and treat crops more precisely and reduce harmful impacts such as nutrient pollution.

I believe a much brighter future is possible if government officials, agricultural businesses and farm, commodity and environmental organizations can unite around a transformative goal. For example, the national, state and local leaders we gathered to discuss the future of Iowa agriculture proposed an initiative to double the full value – monetary and non-monetary – of our state's agricultural economy over 25 years.

With widespread support, such an effort could usher in a new era of economic and environmental wealth in Farm Belt states. It would start with investing in regenerative systems – farming methods that produce agricultural goods and services while also improving soil and water resources, unique habitats and pastoral countrysides. And it would require simultaneous investments in rural infrastructure, new businesses and local and regional markets.

An Alternative Future

What would this transformed system look like? By the 2028 Iowa caucuses, dynamic public-private partnerships of farmers, landowners and others could be working to increase crop diversity and rotations, expand conservation practices and develop necessary markets and infrastructure, such as rural broadband.

More farmers would be planting cover crops like winter rye to help their fields retain nutrients, improve soil health and control weeds. Those who raise corn and soybeans could partner with neighboring livestock producers to grow winter crops for grazing, leaving fewer fields bare.

Cattle grazing on cover crops in Sac County, Iowa. NRCS / SWCS / Lynn Betts

Surveys show that Americans are willing to pay for initiatives that provide multiple benefits from farmlands. Reinvestments in agriculture, renewable energy, rural development and conservation programs could be funded philanthropically and through the U.S. farm bill.

By the 2048 caucuses, Iowa and other farm states where farmers mainly raise commodity crops like corn and soybeans could be producing a wide variety of goods and services, including annual and perennial grains, fiber and biomass crops, livestock, wind and solar energy, ethanol, biodiesel, fruits, vegetables, nuts and hops. Managing farm landscapes for carbon, nutrients, water and wildlife could be as central to farming as crop management is today.

Easy access to rural broadband, plus advances in sensors, artificial intelligence and robotics, would enable highly precise nutrient management, pest and disease control and manure handling.

Small towns could be ringed with agrihoods – planned communities built around working farms and community gardens. They would be vibrant and desirable places to live, offering high-tech jobs and entrepreneurial opportunities, an affordable cost of living and outdoor recreation opportunities.

A National Conversation

Agriculture is always changing. U.S. elected leaders hold substantial influence over this process through their public platforms and ability to make policy.

A decade ago, my colleagues and I saw a choice for U.S. agriculture: incremental improvement, or a push for transformational change that would improve communities and landscapes in farm country. The incremental approach is not moving quickly enough, and rural communities and landscapes are suffering as a result.

Tranformational change could look like the future I have described. How do we make it happen? Iowa and other farm states are ready for that conversation.

Lisa Schulte Moore is a professor of natural resource ecology and management at Iowa State University.

Disclosure statement: Lisa Schulte Moore has received funding from the U.S. Department of Agriculture (FSA, NIFA, SARE), the Foundation for Food and Agriculture Research, Walton Family Foundation, McKnight Foundation, Iowa State University, Leopold Center for Sustainable Agriculture, USDA Forest Service, National Science Foundation, US Fish and Wildlife Service, Bayer Crop Science, The Nature Conservancy, Syngenta, Iowa Soybean Association, Iowa Agriculture Water Alliance, DuPont-Pioneer, Iowa Department of Natural Resources, Iowa Ornithological Union, and Iowa Native Plant Society. She is on the boards of the Great Lakes Bioenergy Research Center, Practical Farmers of Iowa, and Iowa Chapter of The Nature Conservancy.

Reposted with permission from our media associate The Conversation.


A net-casting ogre-faced spider. CBG Photography Group, Centre for Biodiversity Genomics / CC BY-SA 3.0

Just in time for Halloween, scientists at Cornell University have published some frightening research, especially if you're an insect!

The ghoulishly named ogre-faced spider can "hear" with its legs and use that ability to catch insects flying behind it, the study published in Current Biology Thursday concluded.

"Spiders are sensitive to airborne sound," Cornell professor emeritus Dr. Charles Walcott, who was not involved with the study, told the Cornell Chronicle. "That's the big message really."

The net-casting, ogre-faced spider (Deinopis spinosa) has a unique hunting strategy, as study coauthor Cornell University postdoctoral researcher Jay Stafstrom explained in a video.

They hunt only at night using a special kind of web: an A-shaped frame made from non-sticky silk that supports a fuzzy rectangle that they hold with their front forelegs and use to trap prey.

They do this in two ways. In a maneuver called a "forward strike," they pounce down on prey moving beneath them on the ground. This is enabled by their large eyes — the biggest of any spider. These eyes give them 2,000 times the night vision that we have, Science explained.

But the spiders can also perform a move called the "backward strike," Stafstrom explained, in which they reach their legs behind them and catch insects flying through the air.

"So here comes a flying bug and somehow the spider gets information on the sound direction and its distance. The spiders time the 200-millisecond leap if the fly is within its capture zone – much like an over-the-shoulder catch. The spider gets its prey. They're accurate," coauthor Ronald Hoy, the D & D Joslovitz Merksamer Professor in the Department of Neurobiology and Behavior in the College of Arts and Sciences, told the Cornell Chronicle.

What the researchers wanted to understand was how the spiders could tell what was moving behind them when they have no ears.

It isn't a question of peripheral vision. In a 2016 study, the same team blindfolded the spiders and sent them out to hunt, Science explained. This prevented the spiders from making their forward strikes, but they were still able to catch prey using the backwards strike. The researchers thought the spiders were "hearing" their prey with the sensors on the tips of their legs. All spiders have these sensors, but scientists had previously thought they were only able to detect vibrations through surfaces, not sounds in the air.

To test how well the ogre-faced spiders could actually hear, the researchers conducted a two-part experiment.

First, they inserted electrodes into removed spider legs and into the brains of intact spiders. They put the spiders and the legs into a vibration-proof booth and played sounds from two meters (approximately 6.5 feet) away. The spiders and the legs responded to sounds from 100 hertz to 10,000 hertz.

Next, they played the five sounds that had triggered the biggest response to 25 spiders in the wild and 51 spiders in the lab. More than half the spiders did the "backward strike" move when they heard sounds that have a lower frequency similar to insect wing beats. When the higher frequency sounds were played, the spiders did not move. This suggests the higher frequencies may mimic the sounds of predators like birds.

University of Cincinnati spider behavioral ecologist George Uetz told Science that the results were a "surprise" that indicated science has much to learn about spiders as a whole. Because all spiders have these receptors on their legs, it is possible that all spiders can hear. This theory was first put forward by Walcott 60 years ago, but was dismissed at the time, according to the Cornell Chronicle. But studies of other spiders have turned up further evidence since. A 2016 study found that a kind of jumping spider can pick up sonic vibrations in the air.

"We don't know diddly about spiders," Uetz told Science. "They are much more complex than people ever thought they were."

Learning more provides scientists with an opportunity to study their sensory abilities in order to improve technology like bio-sensors, directional microphones and visual processing algorithms, Stafstrom told CNN.

Hoy agreed.

"The point is any understudied, underappreciated group has fascinating lives, even a yucky spider, and we can learn something from it," he told CNN.

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