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Iowa State University Variety Testing

For a quick look at what we do, check out this brochure:

Crop Performance Testing


3/14/06

2006 ENTRIES

For a look at which brands/hybrids/cultivars are entered in the 2006 Iowa Crop Performance Tests, please click here:

2006 Corn and Soybean Entries

These lists are not entirely inclusive. Again, experimental entries are not shown. Widely-grown entries are listed with a "W" in the appropriate column(s). Some widely-grown entries will be in tests outside their listed maturity range. This is done to provide some continuity between tests at a given location.

There were not enough conventional herbicide soybean entries to test this year.

As always, thank you for supporting our testing program. Please e-mail any questions or comments to Jim Rouse at croptesting@iastate.edu


1/25/06

2006 UPDATE

Hard copies of the soybean applications were mailed on Tuesday, Jan 24. Electronic versions of all forms are available on the soybean page. Corn applications will go out Friday of this week. An electronic copy of the corn procedures and the corn application worksheet is available on the corn page.


1/13/06

2006 APPLICATION INFORMATION

There are many new items for 2006,so the application forms and procedures are all being rewritten. I hope to get them in the mail during the week of January 23. I will have a downloadable version available from here before the hardcopies go in the mail. Maps of the new corn & bean districts are available now by clicking on the corn & soybean links at the upper left of this page.

For now here's some information that may be useful to you, and it pertains to BOTH corn and soybeans:

Districts for corn and beans will be the same. The layout is similar to the previous bean map, with a north-central-south split that more-or-less follows county tiers. But we're going to split it into E-W parcels, too. There will be 3 locations per district, 4 replications per location. However, we will "overlap" the districts in the E-W direction. This is much easier to show on a map than to explain in text, but I don't have the location maps completed. But the net result is that all entrants will get data from 4 locations and a total of 16 replications per district.

Cost will be $250 per district per entry. Companies are limited to 6 entries per test per district. Entries must be designated with a brand name that is available for sale to growers. Application and entry information will be posted online as they are confirmed and verified.

Plot length will be 20' (17'5" planted row) this year, up from 18' in corn and 15' in soybeans. Also, we will be planting at least 2 or 3 2-row show plots at some of the ISU research farms. More details about that later, but the point is that we'll be asking for a little more seed per entry than we have in the past. This will be particularly noticeable in the soybeans, since we're increasing 3 reps/3 locs/15' plots to 4 reps/4 locs/20' plots.

Corn tests: There will be an early-season and full-season test in each district. See the map on the corn page for RM guidelines.

Soybean tests: There will be 5 independent tests per district: 1) Conventional herbicide; 2) RR, SCN-resistant beans, early maturity; 3) RR, SCN-resistant beans, full season maturity; 4) RR, SCN-susceptible beans, early maturity; 5) RR, SCN-susceptible beans, full season maturity. Check the soybean map for maturity group guidelines.

As always, please feel free to contact Jim Rouse at croptesting@iastate.edu


A FEW NOTES ABOUT THE DATA:

The data are in Microsoft Excel workbooks. If you don't have MS Excel, you may have trouble viewing the files. Depending on your browser and your security settings, you may or may not run into some extra dialog boxes before being able to view the data. I'm using MS Internet Explorer with a medium security setting. When I click on a link, a new browser window opens and the data are visible. If the security setting is "higher" than medium, you may be asked if you're sure you want to open the file, or you may be prompted to save it first. If you continually fight these issues, I recommend changing your security level while browsing the data. Use your browser Help menu to find out how to do this.

The excel worksheets are currently formatted simply for online browsing, which may not print the way you'd like them to. But you can save the files to your computer and rearrange the formats to your liking.

Eventually there will be pdf files available, which will print in a more user-friendly layout. Target date for the pdf files is sometime before Thanksgiving.


11/10/05

2-YEAR MEANS FOR CORN NOW AVAILABLE (FINALLY!!)

Use the menu above on the left, follow the link for corn.


11/07/05

2-YEAR MEANS FOR SOYBEANS NOW AVAILABLE

Use the menu above on the left, follow the link for soybeans.


11/01/05

DISTRICT MEANS FOR SOYBEANS NOW AVAILABLE

Similar to the individual loc means, all district data are included on separate worksheets in a single Excel file. The file will open in a new window, and you can browse or download the file to your desktop. Use the Soybean menu item at left. Please read the comments on the soybean front page for some additional information.


11/01/05

DISTRICT MEANS FOR SOYBEANS NOW AVAILABLE

Similar to the individual loc means, all district data are included on separate worksheets in a single Excel file. The file will open in a new window, and you can browse or download the file to your desktop. Use the Soybean menu item at left. Please read the comments on the soybean front page for some additional information.


10/26/05

DISTRICT MEANS FOR CORN NOW AVAILABLE

Similar to the individual loc means, all district data are included on separate worksheets in a single Excel file. The file will open in a new window, and you can browse or download the file to your desktop. Use the Corn menu item at left.


10/21/05

ALL CORN LOCS NOW ONLINE

All data from the harvested locations are now available online. Use the Corn menu item at left, and click the location of your choice to open up a spreadsheet containing all information.


10/20/05

5 MORE CORN LOCS ADDED

Sheldon, Remsen, Rossie in District 1, Westside in District 4, and Humeston in District 6 have all been updated. In addition, the main location table now contains the average yield for each test/loc.


10/15/05

SOYBEAN DATA NOW AVAILABLE!

Click on the Soybean link at the left side of this page for access to an Excel file with conventional and RR soybean yield results.

Please send any questions or comments to croptesting@iastate.edu.


10/12/05

4 MORE CORN LOCS ADDED

Data from Charles City in District 2, Iowa Falls and Pocahontas in District 3, and Corning in District 7 are now available. Soybean data coming soon! Check back often.


10/05/05

SALIX and CEDAR added 10/05

Data from the corn tests at Salix and Cedar have just been added.

As before, please remember that the experiment summary info may contain data from "private" entries! Thus an experiment mean is not necessarily obtained solely from the data viewable in these sheets.

Bean results are anticipated to be posted soon. When that happens, a notice will be sent to all soybean applicants as well.

As always, please feel free to contact us at croptesting@iastate.edu


9/29/05

NEW DATA READY FOR VIEWING!

Preliminary data has just been added under the corn menu. Click the link at the left and scroll down. Towns with links have data associated with them. Other towns will become clickable as results are posted.

At this time, all data are in Excel worksheets in the same workbook, meaning that any link will take you to the same file. The file will open in a new window, and you can save a copy to your computer, select the location of your choice, and sort on various traits for different views of the data.

The file has navigable links to help you find what you're looking for. Each location contained a test for "short" hybrids and a test for "tall" hybrids. At this time the data are listed in separate tables, with summary data at the bottom of each table. Ultimately we'll calculate a between-test LSD that can be used to compare hybrids between the 2 tests.

Please remember that these data should be considered preliminary! As you know, the weather conditions in 2005 were quite variable across the state, and quite different from "normal" in most areas. Thus caution should be used when viewing single-location, single-year data. As such, they should NOT be used in any advertising. Also note that several tests contain private entries that were included in the summary statistics, but are not listed in the results.

This is a new procedure for the ICIA / ISU Variety Testing Program, so there may be glitches. Please feel free to contact us at croptesting@iastate.edu to let us know what you think!


9/9/05

CORN AND SOYBEAN CROP PERFORMANCE TESTS GET NEW LOOK

Keep an eye out for several changes to the 2005 Iowa Crop Performance Test corn and soybean trials. Test reports are becoming easier to read and will contain more useful information for variety purchase decisions. Also, the Iowa Crop Performance Testing website is getting a facelift to become a more valuable resource for farmers and others interested in the tests.

According to Jim Rouse, Program Manager for the corn and soybean Iowa Crop Performance Tests, the corn report is in the midst of being reformatted. Information from all districts will be published in a single report, as opposed to separate reports for each district as in the past. Also, in addition to the district means, individual location data will now be reported. Entries will be arranged alphabetically to maintain the report’s organization. Some information that is rarely used by growers will be removed from the printed report to allow larger font sizes; however all data will still be available in the online version.

Rouse indicates that the format for the soybean report will change only slightly, to allow individual location information to be documented.

Other exciting changes include a revamp of the Iowa Crop Performance Testing website. Not only will it include a new and easier-to-read layout, harvest data will be made available as soon as possible after a location is harvested, preferably within 48 hours. Visitors can view the site’s new layout at http://extension.agron.iastate.edu/varietytesting.

In 2005, 47 companies entered 415 hybrids in the corn trials. Over 10,000 variety test plots were planted on 57 acres in 21 locations. Soybean trials included 22 companies and Iowa State University entering 309 varieties. Nine locations were used to plant the 3,600 variety test plots on 17 acres.

Iowa Crop Improvement Association (ICIA) conducts the Iowa Crop Performance Tests in cooperation with the Iowa Agriculture and Home Economics Experiment Station at ISU and ISU Extension. The program offers unbiased, third party, on-farm information to Iowa growers on commercial seed. For more information or to make comments on the changes to the corn and soybean Iowa Crop Performance Tests, contact Jim Rouse at (515) 294-5604 or croptesting@iastate.edu.

Contacts:
  • Jim Rouse, Iowa Crop Performance Tests, (515) 294-5604, croptesting@iastate.edu
  • Del Koch, Iowa Crop Improvement Association, (515) 294-4166, dkoch@iastate.edu
  • Crystal Ostrem, Iowa Crop Improvement Association, (515) 294-6921, costrem@iastate.edu
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