Person: Rob Stout

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Farmers reported that
in 55 of 59 site-years,
properly managed
cover crops had little to
no negative effect on
corn and soybean yield
(and actually increased
soybean yield in 7 siteyears
and corn yield in 2
site-years).

January 13, 2017 

RESEARCH REPORT

While there were
differences among
locations, there were
generally no differences
in soil health variables
between the no-cover and
cover crop treatments at
individual locations.

June 22, 2016 

RESEARCH REPORT

An update to our “flagship” cover crop research trial is now available: “Winter Cereal Rye Cover Crop Effect on Cash Crop Yield: Year 7.” This is a long-term project being conducted by Iowa Learning Farms and Practical Farmers of Iowa. Between 2009 and 2015, 12 cooperators have contributed to 53 site-years of on-farm research as part of this project. […]

June 7, 2016 

BLOG POST

Last June, soil samples were collected from seven PFI farms across the state to assess the effect of cover crops on soil health using the Haney Test. These farms have been involved in a long-term cover crop research trial that has been a joint effort between Iowa Learning Farms and Practical Farmers of Iowa since the […]

March 21, 2016 

BLOG POST

Farmers reported that in
42 of 46 trials, properly
managed cover crops had
little or no negative effect
on corn and soybean yield
(and actually increased
soybean yield in 4 trials).

May 13, 2015 

RESEARCH REPORT

Using cover crops and side-dressing
nitrogen fertilizer is a common bundle
being investigated by Iowa farmers
concerned about soil health, water
quality and return on investment of
cover crops.
• Cooperators grew corn following a
winter rye cover crop and applied a low
and high rate of N fertilizer in a sidedress
application.
KEY FINDINGS
• In only one of six site-years did the
high side-dress N rate result in greater
corn yields.
• In most cases, by not applying the high
N rate the cooperators nearly recouped
the cost of establishing the cover crop
with savings in N fertilizer.

December 5, 2014 

RESEARCH REPORT

Field crops a major feature at Practical Farmers of Iowa annual conference in January Sessions include cover crops, strip-till, water quality and more For Release: December 3, 2012 Download PDF (145 kB) View Fullscreen

December 3, 2012 

NEWS RELEASE

Winter Rye Cover Crop Effect on Cash Crop Yields – Year 3 Project timeline: 2008 – 2013 Published: March 7, 2012 Download PDF (835 kB) View Fullscreen

March 7, 2012 

RESEARCH REPORT