Tag: corn

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In 2014, Iowa Learning Farms and Practical Farmers began a joint research effort to investigate the use of a highboy seeder to seed cover crops into standing corn and soybeans. The objective was to determine the effects of planting technique on the successful establishment of sole species and mixed species cover crops. Cover crop planting […]

March 22, 2017 


This year marks the 30th anniversary of Practical Farmers of Iowa’s Cooperators’ Program—our vehicle for conducting on-farm research trials. As such, throughout this year we’ll periodically be taking a look back at work done by farmer-cooperators over the past 30 years in a series of blog posts entitled “Better Know an On-Farm Research Project.” In […]

February 14, 2017 


On Thursday February 2, Practical Farmers held a cover crop field day at Whiterock Conservancy in Coon Rapids, Iowa. Thirty or so attendees at the field day tuned in to the second webinar in the Agronomy Society of America’s “Cover Crops 2017 – Looking Beyond the Basics” series sponsored by SARE. Practical Farmers member Chris […]

February 3, 2017 


Winter Cereal Rye Cover Crop Effect on Cash Crop Yield: Year 8 is now available! This is a long-term project being conducted by Iowa Learning Farms and Practical Farmers of Iowa. Between 2009 and 2016, 12 farmer-cooperators have contributed to 59 site-years of on-farm research to investigate what effect a cereal rye cover crop might have to […]

January 24, 2017 


Delaying cover crop termination until corn planting is commonly understood to cause corn yield drag. However, the potential for increased cover crop growth by delaying termination has farmers wondering if that yield drag is true and/or can be overcome. Farmer-cooperator Dick Sloan planted corn on the same date (May 5) following two cover crop termination dates: […]

December 5, 2016 


Various green manure cover crop mixes can successfully be established following the harvest of a small grain crop in mid-summer. Following cereal rye seed harvest in July 2015, farmer-cooperator Tim Sieren seeded a brassica mix into one field and a legume mix into another field. He then compared 2016 corn yields resulting from a Low […]

November 21, 2016 


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 


In the past few years, researchers in Pennsylvania and Minnesota have been investigating the practice of interseeding cover crops into corn with a modified, high-clearance drill seeder when the corn is six to eight inches tall (approx. V4-V5 stage of development). With this work in mind, last year farmer-cooperators in Iowa wanted to see if a […]

July 7, 2016 


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



Objective: Quantify the persistence and biomass production of cover crop mixes that are seeded into standing seed corn at the V3-V6 stage (early June).

June 28, 2016