Corn Belt

From 2013 through 2022, the 4R Research Fund provided around $8 million to support 39 projects. Stars indicate projects ongoing.

4R Research With Impact

January 16, 2023

A combine passes through the field with groundwater wells in the foreground. USDA-ARS photo by Newell Kitchen.

Water Well Basics

January 16, 2023

Photo courtesy of GKSFlorapics/Alamy Stock Photo.

How Do Apple Tree Rootstocks and Cultivars Affect Soil Health in Southern Minnesota Orchards?

January 11, 2023

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Newly Certified

January 11, 2023

Agroforestry at the Landscape Level with Dr. Sarah Lovell.

Agroforestry at the Landscape Level with Dr. Sarah Lovell

January 9, 2023

Figure 2. Spray application of a suspension of fine elemental S particles (Sulgro 70). Photo courtesy of Murray MacKinnon, Sultech.

Efficacy of Elemental Sulfur Fertilizers

January 4, 2023

Soybeans with 20 lb sulfate sulfur per acre applied prior to emergence (left) and without S (right). Photo by Shaun Casteel, Purdue University.

Correcting Sulfur Shortages in Midwest Soils

January 2, 2023

Left: Runoff quantification devices known as UBeTubes are ready to deploy. Inset shows a top-down view. Right: Lab test of the water collected by sampler. Photos by Jacob Maris.

A Simple Water Sampler for Runoff Measurement Systems

January 1, 2023

Salford vertical tillage unit with individually mounted wavy coulters. Photo by Jodi DeJong-Hughes, University of Minnesota.

Remember these best practices when It comes to vertical tillage

November 5, 2022

Measured emissions from research on cropping systems are summarized in meta-analyses to validate 4R practice efficacy.

What’s the scope of 4R practices for reducing emissions from fertilizer?

November 5, 2022

Webinar: The High Cost of Inefficient Nitrogen

Considering a Career as a CCA?