Decreasing Inputs to Benefit Iowa’s Water

With a rich family history in rural Harrison County, Iowa Learning Farms farmer partner Brandon McHugh is no stranger to the world of agriculture. With 1,700 acres of crops, 150 head of cattle, and four poultry buildings, he knows the importance of being a steward of the land. No-tillage and cover crops have helped Brandon reduce inputs, but he continues to experiment with new ways to lessen his impact. As a member of Iowa State University’s Master Conservationist Program, Brandon hopes to be a leader in soil and water quality.

Brandon McHugh stands in front of his cover crop seed drill

Born into a farm family, Brandon was immersed in agriculture as a child. After graduating high school, he chose to enlist in the U.S. Army and served in Kuwait for three years. Returning in 1995, Brandon again became an important part of his family’s cattle and row crop operation. It was at this time that he also decided to further his education and earned his degree in farm management from Iowa Western Community College. With his new education and partnership in the farm, Brandon established Two Oaks Red Angus in 2005. Since then, Brandon’s operation has added four poultry buildings that supply broiler chickens to a large supermarket chain. Over his career in agriculture, Brandon has come to see the importance of conservation on Iowa’s landscape. Mainly utilizing cover crops and no-tillage, he is working towards his larger goal of reducing the need for human-made inputs. To help boost the growth of his cover and cash crops, Brandon recently installed subsurface irrigation. This new addition to his farm will also reduce risk during dry years. Brandon’s hope is that combining these practices will lead to more stable soils and cleaner water.

Brandon’s four poultry buildings

In his push towards conservation, Brandon didn’t stop with common practices. His most recent efforts have been looking at the benefits of agricultural biologicals that could help with a crop’s nutrient uptake. Ideally, these products would reduce the need for commercial fertilizer by taking additional nutrients out of the soil and air. Brandon also has interest in utilizing drones for pesticide application. With consistent labor hard to find, his hope is that the new technology could save the need for another employee. 

The filter setup for Brandon’s subsurface irrigation system

Brandon’s push for conservation hasn’t come without challenges. His biggest hurdle is the lack of reliable help. He estimates he has had 12 employees since 2006. Brandon also struggled establishing cover crops on his first attempt. Despite being unsuccessful initially, he planted cover crops again. “You can’t always get discouraged when you have a flop, farming is a marathon.” His overarching goal with cover crops is to benefit the soil in the long run, not improve his yield. Cover crops have also helped Brandon grow a more consistent crop over the years. He notes seeing his fields continue to produce fair yields even during seasons of adverse weather. For Brandon, a consistent crop is crucial to a farm. With no guarantee of a crop every year, Brandon thinks farmers should be doing all they can to reduce variability.

As Brandon looks into the future of nutrient management, he can’t help but remember his roots. Being part of a long line of farmers, he sees the benefits of growing up in Iowa. Even with hardships, Brandon finds joy in waking up every day to work with his livestock and surround himself with nature. With the legacy he has built upon, Brandon pushes to better the land so it can someday be passed on the next generation of Iowa farmers.

-Mitch Harting

Pay for Performance Alternatives in Conservation Practice Incentives

Please join us for the Iowa Learning Farms webinar at noon CDT, Wednesday, April 17, featuring Timothy Rosen, director of agriculture and restoration, ShoreRivers. Rosen manages ShoreRivers’ agricultural department, partnering with academic, state, and federal agencies to advance research and implementation of agricultural best management practices, managing restoration projects, completing watershed assessments, and working with farmers and landowners to reduce land-based pollution. ShoreRivers is a nonprofit organization dedicated to protecting and restoring waterways across Maryland’s Eastern Shore.

In the webinar, “Pay for Performance: Cost-share Alternative to Increase Nonpoint Source Pollution Reduction,” Rosen will discuss alternative models for financial support that may help persuade landowners and farmers to implement some conservation and pollution reduction practices. He will overview traditional cost share and common pay for performance approaches that have been employed to facilitate voluntary practice adoption aiming to reduce nonpoint source pollution. Rosen will address the common perception of pay for performance being a simple 1 to 1 transaction where total payments only vary based on total pounds of nutrient or sediment reduced after verification. He will also examine the limitations of these programs as well as highlighting other pay for performance models used in the Chesapeake Bay region that have successfully accelerated cleanup efforts.

“There is growing interest in pay for performance programs and expanding program offerings are becoming an increasingly important part of agriculture best management practice implementation,” said Rosen. “The key to success in pay for performance is in maintaining flexibility in models and programs to insure relevance to desired outcomes.”

Webinar participants are encouraged to ask questions of the presenters. People from all backgrounds and areas of interest are encouraged to join.

Webinar Access Instructions

To participate in the live webinar, shortly before noon CDT April 17:

Click this URL, or type this web address into your internet browser: https://iastate.zoom.us/webinar/register/WN_xtAwWXycQZW8iwtNLz34GA#/registration

Or, go to https://iastate.zoom.us/join and enter webinar ID: 999 3709 5398

Or join from a dial-in phone line:

Dial: +1 646 876 9923

Meeting ID: 999 3709 5398

The webinar will also be recorded and archived on the ILF website, so that it can be watched at any time. Archived webinars are available at https://www.iowalearningfarms.org/webinars For a list of upcoming webinars visit https://www.iowalearningfarms.org/events-1

A Certified Crop Adviser board-approved continuing education unit (CEU) has been applied for. Those who participate in the live webinar are eligible. Information about how to apply to receive the credit will be provided at the end of the live webinar.

Using the Right BMPs in the Right Places

Within a watershed the climate, drainage systems, and landscapes can be vastly different, resulting in the need for different Best Management Practice (BMPs) recommendations. Watch Dr. Merrin Macrae discuss a 5-step process for determining BMP recommendations specifically geared toward phosphorus in the most recent Iowa Learning Farms webinar, One Size Does Not Fit All: Targeting Conservation Practices to Reduce Phosphorus Loss Risk in the Lake Erie Watershed.

Nonpoint sources are the dominant sources of phosphorus in Lake Erie. How and what type of phosphorus moves to the lake varies based on region. BMPs are a great way to remove phosphorus, and stacking them can provide many benefits, but the practices don’t always work well together or in a certain area. Because the watershed is so different based on snow cover, temperature, and soil type, the watershed was divided into four regions – two of which are transitional.

Dr. Macrae dives deeper into cover crops, no-till, and phosphorus application in her webinar, specifically how each practice could change based on region. I found her discussion on cover crops being affected by snow cover, species, and temperature variability throughout winter to be very interesting.

Watch Dr. Macrae’s and any previously recorded webinars from our archives by visiting our website. Join us this week with Timothy Rosen for more nonpoint source pollution reduction, on Wednesday, April 17th at Noon C.D.T.

Alena Whitaker

Spring Cover Crop Termination Tips & More!

The Whole Farm Conservation Best Practices Manual offers great tips for spring management of cover crops – from termination to planter settings and more!

Cover crops that survive the winter, like cereal rye, must be terminated in the spring ahead of planting, to avoid affecting corn and soybean crop yields. There are four methods of termination approved by RMA to fully insure the upcoming corn and soybeans. Their success rate and the confidence in that success is illustrated in the graphic below.

Timing is also an important factor in successful termination.

  • With corn, terminate the cover crop before it is 8 inches tall, and 10 to 14 days before planting corn.
  • With soybean, terminate the cover crop before it is 12 inches tall, and 3 to 7 days before planting soybean.
  • If spring weather conditions are abnormally dry, terminate cover crops earlier than otherwise recommended.

Planting corn or soybean after a cover crop requires minimal change. Follow best management practices for the corn or soybean crop, and the fundamental principles that maximize production efficiency:

  • Plant based on soil conditions, but realize that suitable soil conditions may be a day or two later than without cover crops.
  • Wait for conducive field conditions with a soil temperature at 50ºF and rising. At a soil temperature of 50ºF or warmer, there is robust seed germination, and vigorous seedling emergence, growth, and establishment.

Nitrogen management is also important to consider when corn is following cereal rye.

  • Move nitrogen application to the spring close to the time of corn planting.
  • Starter fertilizers may be beneficial to minimize impact of nitrogen immobilization due to cover crop root and residue decomposition.
  • There is no need to adjust nitrogen rates following winter cereal grain cover crops.

Four more tips for managing cover crops successfully.

Wishing everyone a safe and successful planting season!

Liz Ripley

Utilizing Cover Crops for their Maximum Benefits

Jason Russell, Iowa Learning Farms farmer partner, started farming 20 years ago on his family’s farm outside of Monticello, in Jones County, Iowa. He attended Kirkwood Community College with no plans for farming and worked for a few years in the tool and die industry. Shortly after graduating, an uncle reached out and asked if Jason would want to join the farm.

Jason’s farming operation has changed over the years and today he raises corn, soybeans, cereal rye, and pigs. He also has a few cattle, timber, and custom farms for landowners in the area. He not only enjoys farming, but also enjoys sharing his knowledge with fellow farmers, students of all ages, and his own kids. His wife Sarah is a teacher, and they routinely have classes out on their farm to see and experience the crops and animals. 

Conservation agriculture is important to Jason, and he applies a variety of practices to his farm such as no-till and strip-till, cover crops, buffer strips, CRP (Conservation Reserve Program), and wind and solar energies. Some have been an easy transition and others had a learning curve for Jason. Cost-share greatly reduced the risks of trying new practices. In addition, employing precision agriculture like GPS guidance and grid soil sampling has enabled Jason to maximize yield while remaining conservation focused. “Precision ag will pay for itself on a few acres and across many levels,” said Jason.

Jason first started using cover crops in 2010 after reading an article about their ability to store nutrients. On his farm, hog manure is the sole source of fertility. Jason injects manure in the fall to prevent spring compaction. “It’s a place for the nitrogen to go with the large influx from the manure and keep it until later in the year when the cover crop decomposes, and the corn needs it,” said Jason. “We’ve been able to eliminate a sidedressing pass which takes the stress off of spring activities.”

“As a hog farmer, having small grains expands the opportunity for applying manure,” said Jason. Using cover crops allows Jason to apply hog manure every fall and provide enough nutrients to grow corn on corn, as much as pests allow. “In traditional corn-on-corn systems farmers worry about yield loss,” said Jason. “As long as you provide enough nutrients and get the pH right, your yields won’t suffer.”

Now with over a decade of experience using cover crops, Jason grows his own cereal rye seed and is starting to experiment with relay intercropping, letting cereal rye grow alongside soybeans. Conservation practices work for Jason and the differences are noticeable. “Some of what I custom farm is not cover cropped, and it is reassuring to see how the acres I farm with cover crops have better soil structure, water infiltration, and yield,” said Jason. He shared this bit of advice for those looking to implement conservation on their own land. “No-till and cover crops work for me but they might not for your land. Experiment with different practices,” said Jason.  

Alena Whitaker

Mixed Cover Crops Offer Increased N Availability to Corn

Please join us for the Iowa Learning Farms webinar at noon CDT, Wednesday, March 13, featuring Hanna Poffenbarger, associate professor of soil nutrient management, University of Kentucky. Poffenbarger’s research focuses on how carbon and nutrients cycle in soil-crop systems and uses this understanding to develop sustainable soil management practices and resilient production systems. Specific areas of interest include: nutrient capture and release by cover crops, spatiotemporal controls on nitrogen dynamics, optimal fertilization practices for crop yield and quality, and root impacts on soil organic matter formation and persistence.

In the webinar, “Winter Cover Crop Effects on the Optimum N Rate of Corn Across Multi-State Field Experiments,” Poffenbarger will discuss the potential of mixed legume and cereal rye cover crops to improve N availability. She will share research findings and objectives aimed at evaluating how cover crops of cereal rye, winter legumes and rye/legume mixtures affect nitrogen supply to the next corn crop. Poffenbarger will also discuss the process of fall and spring N uptake and retention through which nutrients are available for release.

“Mixtures of cereal rye and legumes can be highly productive and capture a lot of soil N while having less N tie-up than cereal rye alone,” said Poffenbarger. “Both cover crop practices can improve nutrient cycling and reduce reliance on N fertilizer in agroecosystems. Participants in this webinar will learn more about how legumes can fix N and increase the supply of this key nutrient to the next crop as a part of a winter cover crop management practice.”

Webinar participants are encouraged to ask questions of the presenters. People from all backgrounds and areas of interest are encouraged to join.

Webinar Access Instructions

To participate in the live webinar, shortly before noon CDT March 13:

Click this URL, or type this web address into your internet browser: https://iastate.zoom.us/webinar/register/WN_xtAwWXycQZW8iwtNLz34GA#/registration

Or, go to https://iastate.zoom.us/join and enter webinar ID: 999 3709 5398

Or join from a dial-in phone line:

Dial: +1 646 876 9923

Meeting ID: 999 3709 5398

The webinar will also be recorded and archived on the ILF website, so that it can be watched at any time. Archived webinars are available at https://www.iowalearningfarms.org/webinars For a list of upcoming webinars visit https://www.iowalearningfarms.org/events-1

A Certified Crop Adviser board-approved continuing education unit (CEU) has been applied for. Those who participate in the live webinar are eligible. Information about how to apply to receive the credit will be provided at the end of the live webinar.

Cover Crop and Relay Intercropping – What’s the Difference? Workshop Series to be held in February

Iowa Learning Farms, in partnership with Iowa State University Extension and Outreach, will host a series of cover crop and relay intercropping workshops in February. We welcome farmers and landowners to attend these free workshops and join us for a complimentary meal. To RSVP, please contact Alena Whitaker at 515-294-2473 or ilf@iastate.edu.

Cover crops provide many benefits to farmers and landowners, including reduced soil erosion, weed suppression, reduced nitrogen and phosphorus loads entering water bodies, increased organic matter in the soil and forage for livestock. Through a relay intercropping system, where three crops are grown in two years, the benefits of the small grains used as cover crops can expand to include a marketable crop and additional revenue in the system. Workshop attendees will have the opportunity to learn more about relay intercropping opportunities, ask questions, and share their experiences.

Relay intercropping small grains and soybeans following small grain harvest.
Photo Credit: Iowa Soybean Association

The workshop will be hosted by Dr. Matt Helmers, Iowa Nutrient Research Center director, Dr. Mark Licht, associate professor and extension cropping systems specialist with Iowa State University Extension and Outreach, and Dr. Jon Dahlem, Iowa State University postdoctoral research associate.

February 20, 2024 | 12:00-2:00pm
Milton R. Owen Nature Center, 18793 Hwy 9, Osage, IA

February 21, 2024 | 12:00-2:00pm
Mahaska County Extension Office, 212 North I Street, Oskaloosa, IA

February 22, 2024 | 12:00-2:00pm

Youth Development Center – Jones County Fairgrounds, 800 N Maple St, Monticello, IA

February 27, 2024 | 12:00-2:00pm
Southeast Research Farm, 3115 Louisa-Washington Road, Crawfordsville, IA

February 28, 2024 | 12:00-2:00pm
East Shelter House – Swan Lake State Park, 23248 Swan Lake Road, Carroll, IA

February 29, 2024 | 12:00-2:00pm
Cass County Community Center, 805 W 10th St, Atlantic, IA

The events are free and open to farmers and landowners, though we require reservations to ensure adequate space and food. For reasonable accommodations and to RSVP, please contact Alena Whitaker at 515-294-2473 or ilf@iastate.edu.  Attendees will be entered in a drawing that evening for ISU Prairie Strips honey.

Iowa Learning Farms field days and workshops are supported by the USDA Natural Resources Conservation Service. For more information about Iowa Learning Farms, visit www.iowalearningfarms.org.

Taking a Chance on Cover Crops

Fred and Vicki Abels farm about 400 acres just outside Holland, Iowa, and are Iowa Learning Farms farmer partners since 2008. Fred started farming in 1981 on his family’s farm in Grundy County where he grows corn, soybeans, and is starting to grow rye. Currently, Fred is serving as Chair of the Grundy County Soil and Water Conservation District and drives a bus route for the local school district.

After attending several Practical Farmers of Iowa field days, Fred became interested in conservation practices and switched to no-till soybeans in 1994. In the mid-2000s, he started strip-tilling before corn and immediately sold all conventional tillage equipment. He is quite adept at modifying equipment to suit his needs, and doesn’t want access to the right machinery to be a deterrent. Fred said, “If you don’t have the equipment, hire a neighbor for a few years until you get your footing and learn the ins and outs.”

In 2009, he started using cover crops, and in the early days had them custom flown on. He has since bought a grain drill and now sees better germination rates. After fourteen years of using cover crops, Fred has the process down but acknowledges that it is not always perfect. “The first season, soon after the cover crops were seeded, we had a big hailstorm that cut the corn down and those acres were too shaded for the cover crops to take,” said Fred.

“In 2011, I thought we had another bad year because nothing germinated,” said Fred, “but then the rye grew in the spring. I was nervous because I had to quickly figure out a termination method, but that fall harvest, that small area of the field where the cover crops were, I had some of the best yields.” Reflecting later that winter, Fred remembered hot winds drying out the surface of his fields, except the area where cover crops had been. Since then, Fred uses cover crops on all of his acres.

In addition, he’s been able to significantly reduce fertilizer rates. During good growth years, his cover crops work as a great weed suppressant against herbicide resistant weeds like waterhemp. Fred has noticed his soil is much less compacted now too, due to a combination of his minimal tillage practices and cover crops. “I enjoy that challenges that have come up as I’ve made cover crops, no-till, and strip till work on my farm,” explained Fred.

Fred has many plans for the future and hopefully new challenges to troubleshoot. He recently started growing twin row rye with corn in the gap on some acres and wants to build a bioreactor to help reduce nitrate. Fred encourages farmers and landowners to learn more about conservation practices and to start making changes. “It is easier to till the soil like your dad used to because no-till, strip-till, and cover crops require more management, but it’s worth it. I have less compacted soil, excellent weed control, and I’ve been able to cut fertilizer rates.” 

Alena Whitaker

Facilitating Conservation Leadership and Conversations Among Farmers

Please join us for the Iowa Learning Farms webinar at noon CST, Wednesday, Jan. 17, featuring Amanda Gumbert, Ph.D., extension specialist for water quality, University of Kentucky. Gumbert works with farmers, landowners, and land managers through the Kentucky Cooperative Extension Service to provide water quality and conservation practice information. Her efforts also extend throughout the Mississippi River basin through multistate partnerships aimed at improving conservation practice adoption to reduce nutrient losses from agricultural landscapes.

In the webinar, “Engaging Farms in Conservation Leadership,” Gumbert will highlight efforts to increase water quality and conservation practice adoption through candid discussion forums and provide practical advice and examples of best practices for engaging farmers and landowners in meaningful conversations about water quality and conservation practice adoption. She will also provide an overview of the current nutrient pollution issues in the Mississippi River basin and ongoing efforts to reduce losses from agricultural lands. Gumbert will highlight the importance of bringing farmers together for candid discussions about conservation practices that can break down barriers to practice adoption through farmers sharing their experiences. She will also discuss how practices such as field days, formal and informal mentoring and other gatherings can play important roles in the reduction of nutrient losses from agricultural landscapes.

“Farmers appreciate learning from other farmers’ experiences, and our projects bring farmers together to discuss topics relevant to increasing conservation adoption in a way that works with their production systems,” said Gumbert. “Through these methods, I hope farmers and farm advisers will feel empowered to serve as leaders in their local watersheds to promote conservation practice adoption.”

Webinar participants are encouraged to ask questions of the presenters. People from all backgrounds and areas of interest are encouraged to join.

Webinar Access Instructions

To participate in the live webinar, shortly before noon CST Jan. 24, 2024:

Click this URL, or type this web address into your internet browser: https://iastate.zoom.us/webinar/register/WN_xtAwWXycQZW8iwtNLz34GA#/registration

Or, go to https://iastate.zoom.us/join and enter webinar ID: 999 3709 5398

Or join from a dial-in phone line:

Dial: +1 646 876 9923

Meeting ID: 999 3709 5398

The webinar will also be recorded and archived on the ILF website, so that it can be watched at any time. Archived webinars are available at https://www.iowalearningfarms.org/webinars For a list of upcoming webinars visit https://www.iowalearningfarms.org/events-1

A Certified Crop Adviser board-approved continuing education unit (CEU) has been applied for. Those who participate in the live webinar are eligible. Information about how to apply to receive the credit will be provided at the end of the live webinar.

Is It Time for Continuing Education for Farmers?


Listening to our farmer partners is at the heart of the Iowa Learning Farms program. They keep us honest and keep us improving. In celebrating our 20th year as a program, we have invited several of our farmer partners to share their ideas and perspectives. Today’s guest blog post was written by Kossuth Co. strip-till and no-till farmer Matt Bormann.


Kossuth Co. farmer partners Matt Bormann and Nancy Bohl-Bormann

Do you know that a barber must have 2000 hours of training before they can hang a license on the wall to cut hair?  Think about it, if a barber wanted to just do butch men’s haircuts with a Wahl clipper, they would need 2000 hours of training to be licensed.

Look around you—almost every profession requires training or continuing education.  Real Estate agents do months of training before they take their exam to get their license. After that, they require so many hours of continuing education in a certain time frame.  The insurance industry requires hours of training to be licensed to sell its products.  Is food production more or less complicated than either of these professional services?

Some farmers are profitable and maintain soil and soil fertility with less tillage and fertilizer/manure through efficient application and continually improving decision making.  On the flip side, there are farmers who do not soil sample.  How can those farmers say they are about science when they do not have sufficient data to make a decision?  Society, i.e. taxpayers, subsidizes farmers with crop insurance, disaster assistance, and FSA programs without any sort of real conservation string attached. 


Across Iowa the last 10 years there are farmers who have embraced the Nutrient Reduction Strategy and implemented effective practices. They actually have some curiosity and have tried different practices and now have adopted new practices that will improve water quality and promote soil health. Then literally on the other side of the fence there are farmers who have doubled down on their resistance and there is no change, not even reducing tillage. Notice I did not say no-till or even mention cover crops! 

Farmers and the farming profession should become more professional. Agriculture should take a lesson from other professions that require continuing education.  I’m not saying a testing sort of education like some professions, just continuing education in courses that educate them on the science and environmental issues related to best practice management on their farm. Seed scientists tell us our seed traits aren’t as effective on pests as they used to be.  Weed scientists tell us resistant weeds are on the rise and more of our crop protection chemistries need to be managed more effectively. We need to learn more about planning fertilizer rates based on soil fertility testing. Continuing education would be a way for farmers to prove they are up to speed on current best practices.


I propose farmers who purchase seed, chemicals, nitrogen, and phosphorus fertilizer, should have twelve credit hours of continuing education a year. Four credit hours each in seed and chemical training, fertilizer and nitrogen training, and soil conservation and water quality training. Once again, attend the training similar to Private Pesticide training, not necessarily have to pass a test like other professionals.

Doing things “the way we always have” doesn’t cut it anymore with the science we already have and our new technology today.  There are way too many studies that demonstrate new practices are having great success. There are also farmers demonstrating and having success with new practices; they are in fact very profitable!  We can’t hide from that truth.  Why shouldn’t the industry that produces our food be held to a higher level of accountability?  Or should industries like insurance, teachers, barbers, coaches, doctors, and real estate agents advocate for less accountability in the name of more freedom and less cost to do their jobs?  I am not saying I have all the answers. I do know keeping soil and nutrients in place should be an interest of all society.

-Matt Bormann