Clay County Growers Association
Clay County Growers Association
homenewsletterweather infoexperimental plotscompanies participatingcontacts

About Us

Clay County Growers Plots are located eight miles south of Spencer on Highway 71. Fields are open to public viewing at any time.

Posted On May 25, 2016 11:31 AM
Planting Updates
The soybeans have been planted at the Plot!  The grower, Roger Nelson, along with several helpful individuals including members of the Clay Central Everly FFA chapter arrived at 9 am Tuesday May 24.  We finished up about 7pm.  There are 15 Liberty Link entries, 17 Xtend soybeans entries, and 68 Round Up Reay 2 entries this year.  We also did a seed treatment study with ILeVo from Bayer.  There 4 replicated trials that we will glean data from at harvest.  Bayer has provied us with a weather station this season.  To view the location weather conditions you can log in to:
user ID: ISA0000050
Password: 23929

Info will be in the me weather and summary tabs.

Posted On May 12, 2016 8:31 AM
New portable weather station
We are going to be conducting an ILeVo soybean seed treatment trial this year using On-Farm Network protocols.  The seed treatment is provided by Bayer.  Bayer has also set-up a portable weather station for us to monitor the weather live at the plot.  Soon I will have more information that growers can log in and see what the weather at the plot is doing. Stay Tuned!

Posted On May 9, 2016 3:43 PM
Corn planted on May 7
The corn for the yield trials and research were planted on Saturday, May 7.  We started planting approximatley 9 am and finished up shortly after 6pm.  Many thanks to those that helped.  There were 26 entries for Non-GMO corn starting on the west end of the plot.  We then planted 83 GMO entries.  At the west end of the plot we are conducting a population study through the On-Farm Network.  We planted four replications each at 32K and 37K using Wyffles 2276 in 12 row blocks.  I will be posting the seed entries on the sit esoon.

Posted On December 29, 2015 1:32 PM
Soybean Trial 15" vs 30" row spacing
Click on Experimanetal Plots to view the On-Farm Network Soybean trial results for th eplot this year. 

Posted On December 15, 2015 9:42 AM
On-Farm Network
The corn trials can be viewed by going to the experimanetal tab and clicking on the link.

Posted On August 27, 2015 11:21 AM
Plot Tour Success
Plot Tour 2015 was held Wednesday night.  The weather was Awesome and the crowd was even better.  Look for harvest data in the coming weeks!

Posted On July 30, 2015 8:43 AM
Clay County Growers Plot Day
SAVE THE DATE!  Come to our annual Plot Day on Wednesday August 26, 2015.  We are located south of SPencer, Iowa on Highway 71, East side of the road.  

Registration begins at 5:30 pm
Steak dinner grilled by the Clay County Catleman 6pm
Program 7pm
Plot Updates - Sam Harper Plot Manager - Pro-Crop Farm Management
                   David Kruse - Commstock Report
                   Richard Stessman - On Farm-Network/Iowa SOybean Association
                   Representative from Iowa Corn Growers Association

Steak Dinner/Program is $10 at the event.  Sign up to recieve the final plot data when you register.  
Questions call Sam Harper 712-339-5002

Posted On July 15, 2015 4:09 PM
Highway 71 is now open!
Come visit the plot.  The highway os open.  Seed companies will continue to hang there signs.  There is a map on the back of the plot billboards to help you find different numbers.  Please thank our partners and seed companies for their time, funds, and efforts.

Posted On July 7, 2015 9:10 AM
Climate Pro Vegetation map
This is the vegetation map from Climate Pro taken by satallite on July 3. 

Posted On July 7, 2015 8:56 AM
Crop Progress Report July 3
I have been watching the Climate Pro software this year to track precipitation and Temprature.  In addition the Pro feature allows me to monitor scouting maps and vegetation maps that are taken periodically by satallite. This image was taken July 3.  The area on the East end is where we are conduting the Nitrogen research.  Some rows were side dressed an additional 50N.

Posted On June 8, 2015 10:34 AM
Crop Progress Report June 8
It's a bit more challenging to get to the plot with Highway 71 under construction.  You can get there by either 430th St or 420th St.  These are both gravel roads.  Go around the baricades and travel towrds the plot entrance.  Watch for the construction trucks, they have the right-of-way.

The corn and soybeans are all growing well.  The corn was sidedressed on June 2.  I have flagged the side-dressed passes in the research area.  I also flagged the narrow rows in the beans on th each end.  I have ordered both sides to get post applications of herbicides, hopefully this week.


Posted On May 14, 2015 10:37 AM
Soybeans planted May 13, 2015
The Clay County Growers have successfully planted the Plot for 2015.  Now it's up to mother nature and the genetics from all the seed compnaies to produce a great crop.  The corn was planted on May 1 and the soybeans on May 13.  The soil conditions were very good. We could use some heat from here on out as it has been somewhat cool.

Posted On May 4, 2015 9:14 AM
The corn was planted on Friday May 1 after a rain delay tried to derail our efforts.  Many thanks to the volunteers who were able to help.

Posted On April 28, 2015 12:58 PM
Corn Planting Scheduled
The Clay County Growers are excited to plant corn.  We plan on starting at 9 am on Friday May 1, 2015.  Fell free to come see how we are progressing.  You might even get th echance to help out if you would like.  Soybeans will be scheduled at a future date.  Please stay posted for more information.  This is all the seed sitting in the seed shed.  I am in the process of sorting it in preperation for planting.

Posted On March 10, 2015 10:55 AM
Seeking Seed Numbers
The planting season is fast approaching.  I am building a spreadsheet for the planting of the plot.  If you have not sent me a copy of the numbers you plan on entering into the plot please do so as soon as possible. Additionally if you have not sent in your confirmation that you are participating in th eplot this year please let me know ASAP.


Posted On December 19, 2014 9:59 AM
Clay County Grower's Plot "Under New Management"

After many years as the plot manager Dave Hessman has made the decision that it was time to pursue other interests.  However that does not mean the plot and the great work we have accomplished in the past is ending.  Sam Harper, of Pro-Crop Farm Management & Consulting has agreed to take over the management duties of the plot.  We would like to thank Dave for his years of service and wish him well!

Hello!  My name is Sam Harper.  First, I want to thank you for reviewing our data over the years.  The results for 2014 were mailed out in November and should be posted to the website soon. It was another challenging year with all the rain in early June but for the most part the entries performed well.  We are planning on resuming the annual meeting again in 2015!  Saty tuned for announcements during planting time to save the date.

You can contact me at with any questions or comments.

Corn Results
2016 Non-GMO planting guide
2016 GMO Corn Planting guide
2015 Corn Results ranked in maturity groups
2015 Corn GMO Whole Plot Results
2015 Conventional Corn Results
2015 Conventional Corn Lineup
2015 RR Corn Lineup
2014 Test Plot Results
2014 top 10 yields
2012 Top Ten Yields
2012 Test Plot Results
2011 Top Ten Yields
2011 Test Plot Results
2010 Test Plot Results
2009 Top Ten Yields
2009 Test Plot Results
2008 Test Plot Results
2007 Top Ten Yields
2007 Test Plot Results

Bean Results
2016 Xtend Soybean Planting Guide
2016 R2Y Soybean Planting Guide
2016 LL Soybean Planting Guide
2015 Conventional Soybean Results
2015 Soybean RR results by Maturity
2015 Soybean RR results
2015 Conventional Soybean lineup
2015 RR Soybean Lineup
2014 Top Ten Yields
2014 Test Plot Results
2013 Test Plot Results
2012 Top Ten Yields
2012 Test Plot Results
2011 Top Ten Yields
2011 Test Plot Results
2010 Top Ten Yields
2010 Test Plot Results
2009 Top Ten Yields
2009 Test Plot Results
2008 Test Plot Results
2007 Top Ten Yields
2007 Test Plot Results
You Need Adobe Reader® To View Our Results. Get It Here
Copyright © 2007. Clay County Growers Association