Person: Jeremy Gustafson

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In a Nutshell
• Can frost-seeding small-seeded
brassica species into crop residue
be an effective spring cover crop
strategy?
Key Findings
• Among three locations, mustard
provided the most groundcover.
• When frost-seeded in the spring,
cover crop growth appears to be
related to GDD accumulated prior
to termination.

October 16, 2017 

RESEARCH REPORT

In a Nutshell
• Cereal rye, oats and other
small grains grass species
have been proven as effective
cover crops in cornsoybean
systems in Iowa.
• Cooperators screened grass,
legume and brassica species
for fall and spring groundcover
in hand-seeded plots
(7.5’ x 25’) across the state.
Key findings
• Cereal rye remains the
most consistent cover crop
providing fall groundcover,
overwintering capability and
spring groundcover across
locations.
• Brassicas generally produced
as much fall ground cover
as the small grains grasses
in the present iteration of
the trial.
• Hairy vetch and radish
performed better than in
past iterations, likely due to
exceptional growing conditions

July 25, 2017 

RESEARCH REPORT

On-farm research shows benefits of planting “green” with soybeans into a cereal rye cover cropFor Release: March 29, 2017 Download PDF (3 MB) Contact: Nick Ohde | Research and Media Coordinator | Practical Farmers of Iowa | (515) 232-5661 | [email protected] Stefan Gailans | Research and Field Crops Director | Practical Farmers | (515) 232-5661 [...]

March 29, 2017 

NEWS RELEASE

Delaying cover crop termination until near soybean planting would allow for more biomass production by the cover crop in the spring presenting the opportunity for more environmental benefit. Two farmer-cooperators continued work they began in 2015 that compares terminating a cereal rye cover crop 2-3 weeks prior to seeding soybeans (early termination) with terminating the […]

November 30, 2016 

BLOG POST

In a Nutshell
• Delaying cover crop termination until
near soybean planting would allow
for more biomass production by the
cover crop in the spring presenting the
opportunity for more environmental
benefit.
• Two farmer-cooperators continued
work they began in 2015 that compares
terminating a cereal rye cover crop 2-3
weeks prior to seeding soybeans (early
termination) with terminating the cover
crop within 5 days of seeding soybeans
(late termination).
Key findings
• Jeremy Gustafson saw a 2 bu/ac increase
and improved weed control with
the late termination treatment in 2016.
This amounted to a $49.97/ac economic
benefit compared to the early termination
treatment. In 2015, soybean
yields were equivalent between the two
termination date treatments.
• Jack Boyer saw no difference in soybean
yields between the two cover
crop termination treatments in either
year. In 2015, he was able to skip a
post-emergence herbicide application
which saved him approx. $40/ac.

 

RESEARCH REPORT

The Farm Progress Show was in Boone, IA last week. Practical Farmers of Iowa has been hosting a booth at the show the past three times its been held in Boone, IA. The booth was filled with cover crop plants, PFI materials and most importantly PFI farmer experts who shared advice about cover crops with other […]

September 9, 2016 

BLOG POST

Practical Farmers of Iowa’s mission is to strengthen farms and communities through farmer-led investigation and information sharing. One of the primary ways we accomplish this mission is through on-farm research as part of our Cooperators’ Program. Over the past few years, the investigation of cover crops by farmer-cooperators has dominated the program. Below I offer a review […]

July 19, 2016 

BLOG POST

Cover Crop Variety Trial 2015-2016 Download PDF (2 MB) View Fullscreen

July 7, 2016 

RESEARCH REPORT

Each year more farmers in Iowa and across the Cornbelt are trying cover crops. Many start with a cereal rye cover crop planted in the fall after corn or soybean harvest or others contract with a pilot to fly it over the standing cash crop around Labor Day. Good planter setup can be key to […]

May 17, 2016 

BLOG POST

Delaying cover crop termination until soybean planting would allow for more biomass production by the cover crop in the spring presenting the opportunity for more environmental benefit. A newly released research report profiles the findings of farmer-cooperators who seeded soybeans 10-14 days after terminating a cereal rye cover crop and within 1 day of terminating the cover crop. The objective of this […]

November 30, 2015 

BLOG POST