Last month NAAA and Practical Farmers of Iowa (PFI) hosted
the webinar, “Successfully Aerially Seeding Cover Crops.” In it, NAAA pilot
member Brian Berst and two Midwest cover crop consultants shared their
insights, advice and strategies for effectively seeding cover crops by air.
Approximately 40 NAAA members participated in the live event. The good news for
those who missed the June 17 webinar is that PFI archived it, making it available on demand to watch whenever you would like. Anyone interested
in learning more about cover crop applications will find the webinar to be well
worth your time. Here are a few of the things we learned during this online
educational opportunity.
For starters, cover crops could be a real boon to
aerial applicators’ business. Based on present-day estimates, cover crop acres
may have to increase by as much as 500 percent to reach cover crop advocates’ goal
of 20 million acres of cover crops by 2020. Aerial applicators are uniquely
qualified to help farmers meet their cover crop objectives because no method of
application can seed more acres of cover crops within the allowable window to
get good establishment more quickly than an ag aircraft.
The meat of the webinar began with Berst describing
Klinkenborg Aerial Spraying and Seeding’s experience working with cover crops.
The Parkersburg, Iowa, operation added aerial cover crop seeding to its service
portfolio because there was a high demand for it in northern Iowa and it allowed
Klinkenborg to extend its flying season by three to four weeks at the end of
the summer.
From his vantage point as Klinkenborg’s head pilot, Berst
shared several tips, chief among them the importance of seed selection and
proper calibration to ensure the seed disperses in the correct pattern. Klinkenborg
finds streamlined seed blends easier and faster to work with, and Berst
recommends getting the seed mixes delivered in bulk. When a cover crop blend
features a range of seed sizes, he advises determining the swath width based on
the lightest seed in the blend. Soil contact, sunlight and water are essential
to good establishment, but even when the seeds land on the leaves of the
existing crop instead of the ground, Berst noted that wind and rain will cause
most of them to fall to the ground.
Next, Jamie Scott of Scott’s Cover Crops in
Pierceton, Ind., discussed the benefits of cover crops and why he is a
proponent of aerial seeding. The biggest advantage aerial seeding has over
other cover crop planting methods, of course, is time. To illustrate the
importance of timing, Scott pointed out that in Indiana the difference between
planting cover crops on Oct. 7 instead of Sept. 7 is that you are losing an
hour and a half of sunlight and 12 degrees in temperature. Planting the seeds
earlier via aerial application gives cover crops more time to establish
themselves with thicker, deeper roots.
The formal portion of the webinar concluded with a
presentation on seed selection from Sarah Carlson, PFI’s Midwest cover crop research
coordinator. Carlson discussed the varieties of seeds available for cover
cropping as well as what’s being aerially applied in different areas of the country.
She also walked viewers through the Midwest Cover Crop Council’s Cover Crop Decision Tool, a web-based tool designed to assist farmers in
selecting cover crops to include in their crop rotations.
NAAA extends its thanks to Practical Farmers of Iowa
for hosting the cover crops webinar and all of the speakers who shared their
insights about aerial cover crop seeding. The webinar concluded with a Q&A
session based on audience-generated questions. “Successfully Aerially Seeding
Cover Crops” is available to view in its entirety here.