Endure 4R Advocates

 Endure 4R Advocates

Endure 4R Advocates are individuals throughout the FS System who have been recognized for supporting growers in sustainable best management farming practices, demonstrating economic and environmental benefits. Sustainable best management farming practices are demonstrated by: 

  • Knowledge and implementation of 4R nutrient stewardship principles as defined by The Fertilizer Institute
  • Assisting growers with implementing nitrogen management​ as a system
  • Promoting the use of nitrogen stabilizers
  • Implementation of N-WATCH™ nitrogen tracking services
  • Conducting MiField™​ Applied Research on customers' farms
  • Use of variable rate technology for fertilizer applications
Nutrient Management.png


The 4R philosophy is an innovative and science-based approach that offers enhanced environmental protection, increased production, increased farmer profitability, and improved sustainability. The concept is to use the right fertilizer source, at the right rate, at the right time, with the right placement. For fertilizer use to be sustainable, it must support cropping systems that provide economic, social, and environmental benefits for growers. Implications of the 4R nutrient stewardship system will spread far and wide through agriculture and society as a whole.

GROWMARK Inc. sponsors the Endure 4R Advocate recognition program. ​

 2017 Endure 4R Advocates

Adam Dexter- West Central FS 02 Adam Dexter_select.JPG

Adam Dexter is a Certified Crop Adviser at West Central FS. He oversees the sales territory based in Williamsfield, Illinois. Earlier this year, he won The Fertilizer Institute's 4R Advocate award.

"4R nutrient stewardship is important to me because it is economically and environmentally the right thing to do," said Dexter. "Using the 4R approach helps us reduce losses while improving efficiencies."

Jay Matthews- AgVantage FS Jay.PNG

Jay Matthews is a Certified Crop Adviser at AgVantage FS, based in Charles City, Iowa. He is a 4R Nutrient Management Specialist and advises growers on seed, chemical, fertilizer, and precision farming needs.

"It is important to continue to show the world that we are growing crops sustainably and are good stewards of the environment," said Matthews.

Nicole Weber- FS PARTNERS04 Nicole Weber_select.JPG

Nicole Weber is the Precision Ag Manager at FS PARTNERS. She works with their six main agronomy hubs across southern and central Ontario. Weber holds her Certified Crop Adviser and 4R Nutrient Management Specialist designations in Ontario.

"Not only are we utilizing the 4Rs to make nutrient recommendations based off of scientific principles and best management practices," said Weber. "There's also an environmental and economic benefit by minimizing losses and maximizing crop nutrient uptake."

​John Musser- Stephenson Service Company 05 John Musser_select.JPG

John Musser is a Certified Crop Adviser at Stephenson Service Company based in Stockton, Illinois. He has 37 years of experience in the agriculture industry and has worked at Stephenson Service Company since 1990. Musser is a 4R Nutrient Management Specialist and 2012 Certified Crop Adviser of the year. He also serves on the Illinois Fertilizer and Chemical Association Board.

"The use of the 4R ideas is sound in how we deal with nutrients," said Musser. "This will improve our overall footprint we apply."


Don Jones is a Certified Crop Adviser at GROWMARK FS. He oversees seven locations with salespeople in New York and Pennsylvania. He has worked at GFS and predecessor companies since 1990.

"I live north of the Canandaigua Lake," said Jones. "We must preserve its integrity. I take pride in our use of the 4Rs, especially in the management of nitrogen."

 2016 Endure 4R Advocates

CHRIS Snip- AGRIS Co-operative ​​Chris Snip.jpg

Chris Snip is a Certified Crop Advisor and has worked at AGRIS Co-operative, based in Ontario, Canada, for 16 years. He is also an active member of Delta Waterfowl, The Ontario Federation of Anglers and Hunters, and a board member of the local Soils and Crop Association.​ 

"I started really showing appreciation for the 4R approach after I witnessed a large algae bloom in the western basin of Lake Erie in the fall of 2011," said Snip. "I live on a tributary of Lake Erie. Across the road from the lake, my family and I spend a lot of time in and on the water and consuming fish from the lake. I hated to see the lake that way. I felt I could play an important role in reducing nutrient loss from agricultural lands in my trade area. I work with growers individually to help them come up with ways that can reduce nutrient losses on their farm operation that work with their cropping practices and equipment capabilities while maximizing nutrient utilization and profitability," he added.

Rick Klevze – GROWMARK FS​Rick Klevze.JPG

Rick Klevze is the location manager at the GROWMARK FS Bloomsbury, New Jersey location. He has over 35 years of experience and has been a Certified Crop Adviser (CCA) since 1994.

"The 4R approach is a sensible way to balance environmental concerns with the economic needs of the farmer," said Klevze. "It uses sustainable agronomic practices learned from 2,000 years of agricultural progress to maximize fertilizer efficiency and minimize nutrient losses. It is a concise visual device which communicates to the public that production agriculture cares for our environment, while maximizing food production for an increasingly hungry world. My co-workers and I utilize 4R practices for the benefit of our customers and our community," he added.

Malcolm Stambaugh- Ag View FS Malcolm work pic.jpg

Malcolm Stambaugh joined Ag View FS in 2008 and is a crop specialist in Walnut, Illinois. Stambaugh has worked with farmers to be recognized by The Fertilizer Institute's 4R Advocate Program three years in a row. He also worked with another farmer to win the World Forage Analysis Superbowl at the World Dairy Expo three years in a row and another to win the Pursuit of Maximum Yield contest.

"In concept, a lot of producers are using the 4Rs because they make sense and provide an economic advantage," said Stambaugh. "As an industry, we need to better tell our story to show consumers and other producers how it works. We are being the best nutrient stewards we can be while protecting the environment for future generations. Our role is to partner with growers to establish best management practices. A grower's willingness to push the envelope is only tempered by our requirements to increase yield, do it profitably for the grower, and have an environmentally neutral impact. This expands well beyond product-related decisions," he added.

Jason Wesslund- Heritage FS Jason Wesslund.jpg

Jason Wesslund is the area manager for the eastern half of the Heritage FS territory based in Gilman, Illinois. He supervises four agronomy locations and four energy territories. Wesslund also leads education and training of sustainable best management practices at Heritage FS. He serves on the board of directors at the Illinois Fertilizer and Chemical Association.

"I use the 4R approach to make recommendations because it fits into what many of us have already been doing," said Wesslund. "The biggest change has been how we approach nitrogen applications from using learning tools like N-WATCH. We have adapted our recommendations from one trip of nitrogen to two and three trips per season. If we don't promote better practices to our growers, we will be told what practices to use and we all know that isn't the answer to a sustainable future in agriculture," he added.

Logan Haake- Legacy Farmers Cooperative

Logan Haake is the precision ag manager for Legacy Farmers Cooperative. In his role, he leads all Logan Haake2.jpgprecision planting, climate, grid sampling, field scouting, variable rate prescriptions, and other precision ag programs for Legacy Agronomy. Haake is a Certified Crop Adviser, serves on the Ohio CCA Board and is currently working towards his 4R Nutrient Management Specialty certification. Haake has worked to get all five of their agronomy plants to be 4R certified. They are the first in Ohio to have all locations approved.

"Following the 4R approach is both environmentally and economically sound for our growers," said Haake. "If we want to be sustainable in the future, all four components of the 4R approach will get us there. Not over applying by using VRT and precision, and applying the product at the right time is very critical for our growers' success," he added.