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FAQ: Why did you start your experiment at a National Wildlife Refuge?

Iowa’s plentiful agriculture draws on the diminishing heritage of native prairies: rich soils, biodiversity, cleaned water and controlled erosion –  services that are impaired by today’s agricultural practices. Are there practices that mix row-crop agriculture and prairie to develop win/win systems? The 6,400-acre Neal Smith National Wildlife Refuge in Jasper County in central Iowa provided a unique opportunity for researchers to test practices on a "whole" watershed. Read more about FAQ: Why did you start your experiment at a National Wildlife Refuge?

Challenge #1: Soil Erosion from Agricultural Fields

Challenge #1: Soil Erosion from Agricultural Fields

Land degradation due to soil erosion

Soil erosion adversely impacts agronomic productivity. Additionally, soil erosion negatively impacts the environment, food security, and quality of life. The effects of soil erosion have both on-site and off-site impacts. For example, on-site impacts may include reduced crop yield and increased nutrient loss, while off-site impacts may include water contamination and increased food prices.

 Three reasons why soil erosion is an important issue: Read more about Challenge #1: Soil Erosion from Agricultural Fields

Challenge #2: Reduced Water Quality

Challenge #2: Reduced Water Quality

Nutrients such as nitrogen and phosphorus, and suspended soil sediments have greatly diminished water quality (USEPA, 2017a). Polluted water with unusually high concentrations of dissolved or suspended materials, or small amounts of highly toxic materials can be detrimental and sometimes even deadly to living things. Civilization has many uses for and is dependent on high-quality water (Troeh et al., 2004).

Major agricultural contributions to reduced water quality include: Read more about Challenge #2: Reduced Water Quality

Research Overview

Helmers-Watkins-Liebman NSNWRThe STRIPS project began in 2003, when Iowa State University scientists began discussing the opportunity to test the effects of integrating restored prairie in crop fields with managers at Neal Smith National Wildlife Refuge. Together, the scientists and refuge managers established four different treatments on 12 small watersheds at Neal Smith in 2007. As of 2012, we're now also working on a growing number of commercial farm fields across Iowa and northern Missouri. Read more about the research background, farmer collaborators, and research topics here. Read more about Research Overview

Frequently Asked Questions

diversified farmPrairie strips are a farmland conservation practice that uses strategically placed native prairie plantings in crop fields. The practice has been tested by the STRIPS team since 2007 on experimental plots at the Neal Smith National Wildlife Refuge and increasingly on commercial farms across Iowa. Here we present our responses to the Frequently Asked Questions we receive on prairie strips at conferences and field days, and through email. The information was prepared by team members, and will be updated over time as needed, as we continue to learn. The answers below are general in nature, and may not apply in specific situations. Resources are provided with each answer. Read more about Frequently Asked Questions

Prairie Strip Installation and Establishment

Installation and Establishment

Prairie strips are most easily established in fields which have previously been used for tilled annual row crop production (Jarchow and Liebman, 2011). Seeding following soybeans is especially favored for prairie strip establishment because the tilled field will have a reduced seed bank of annual weed seed and the soybean stubble will decompose readily (Jarchow and Liebman, 2011).

Nonetheless, if the correct procedures are followed prairie can be easily established following any crop or land cover. Read more about Prairie Strip Installation and Establishment

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