All posts by Virginia Sykes, Extension Variety Testing & Agroecology

2024 Soybean Variety Tests in Tennessee

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Results from the 2024 Tennessee OVT, CST, and Disease soybean trials are now available (full report pdf, excel tables, excel appendix tables). The summary sheet below (Table 4 in the full report) lists varieties in the “A Group” (not statistically different from the highest yielding variety) in either one or both of the REC and CST trials. Listed for each variety are yield, number of years that variety has been in the A group and the percent of locations where that variety had above average yield (click the image to view larger size).

 

AgResearch and Education Center (REC): Eighty soybean varieties were evaluated at nine sites in small plot replicated trials . There were 8 varieties in MG3, 24 in MG4E , 40 in MG4L, and 8 in MG5 tests. Herbicide tolerance varied by entries with the majority falling into the XtendFlex (XF) or Enlist E3 categories, either with or without STS tolerance (61 entries).

County Standard Tests (CST): Forty-nine soybean varieties were evaluated in unreplicated strip trials. Trials included MG3 / MG4E XF (9 varieties at 5 locations), MG4E Enlist ( 26 varieties at 7 locations), and MG4L XF (14 varieties at 7 locations).

Disease Trials: County trials at three AgResearch and Education Center sites were evaluated for yield with and without a fungicide application. Yield as well as ratings for frogeye, target spot, brown spot, and soybean cyst nematode are reported.

 

 


Tennessee Corn Hybrid Trials – 2024 Results Available

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Results from the 2024 Tennessee OVT and CST trials are now available in pdf or excel format. Tests were grouped by maturity into early (<114 DAP), medium (114 – 116 DAP), and full (> 116 DAP). Data were collected on yield, moisture, test weight, lodging, height, protein, oil, starch, and disease.

AgResearch and Education Center (REC): Forty corn hybrids were evaluated at nine sites in small plot replicated trials . There were 10 hybrids in the early- (Tables 4-5), 21 hybrids in the medium- (Tables 9-10), and 9 hybrids in the full-season (Tables 14-15) tests.

County Standard Tests (CST): Twenty-seven corn hybrids were evaluated in unreplicated strip trials. Trials consisted of an early- (11 hybrids at 9 locations, Table 6), a medium- (8 hybrids at 15 locations, Table 11), and full-season test (8 hybrids at 14 locations, Table 16).

Common to both the REC and CS tests were 5 early-season, 7 medium-season, and 3 full-season hybrids (Tables 8, 13, 18). Hybrids in the “A Group” (not statistically different from the highest yielding hybrid) are listed below for each trial and test (click the image to view larger size).


Southern Cover Crop Variety Trial – 2024 Results

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We have been busy getting corn harvested and cover crops ready for planting over here! As you start thinking about which cover crop species/varieties you’d like to try this year, take a look at the latest data from our Southern Cover Crop Variety Trial. This trial covers a broad region of the Southeast, with sites in TN, KY,  AR, NC, SC, VA, AL, GA, FL, and TX.

This year we evaluated 20 varieties, including 1 brassica, 9 cereals, and 10 legumes.  These included the following species, with number of varieties evaluate indicated in parentheses:  daikon radish (1 ), cereal rye (2 ), oat (6 ), triticale (1), balansa clover (1), berseem clover (1), crimson clover (3), Persian clover (1), red clover (1), common vetch (1), and hairy vetch (1).

Establishment, cover crop cover and weed suppression during the growing season, and biomass, height, nitrogen release, and forage nutritive value at an early spring (pre-corn) and late spring (pre-soybean) evaluation date were evaluated for each entry. Methods used to evaluate and analyze these data and graphs of environmental conditions at each site during the cover crop growing season can be found in the 2024 Southern Cover Crop Variety Trial Report Final pdf version of the report. Result tables are listed in the pdf or as a separate download in excel.

We hope you find this data useful in your search for the best cover crop species/varieties to fit your location and your growing system!

 


2023 Soybean OVT Prelim

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Prelim results from the 2023 TN soybean OVT are now available as pdf (2023 Soybean Tables, 2023 Soybean Tables Appendix) and excel files (2023 Soybean Tables, 2023 Soybean Tables Appendix). Seventy-one varieties were evaluated in small plot replicated trials (REC) at 8 sites. In addition to yield, moisture, lodging, maturity, oil, and protein, data were collected on diseases, including frogeye and SDS, at locations where these diseases were present. The final CST data and disease trials are not in the prelim report but will be included in the final version to be posted here and on search.utcrops.com. Varieties that were in the A group in the OVT are listed below.


2023 Corn Grain OVT Prelim

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Prelim results from the 2023 TN corn grain hybrid OVT are now available as an excel file 2023 Corn Grain Tables. Thirty-three hybrids were evaluated in small plot replicated trials (REC) at 9 sites. The CST trial data is still being finalized but should be posted within the next week and will be included in the final combined report to be posted here and on search.utcrops.com.


Cover Crop Variety Selection for the South

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As harvest progresses for our major commodities, it is time to start planning and planting cover crops. Cover crops offer many benefits to agronomic systems, including erosion control, improvement to soil health, nutrient retention and additions, and weed suppression. How do we maximize these benefits? A key component is finding the right species, and varieties within those species. Just like corn, soybean, and cotton, that “right” variety is going to depend on your region and cropping system.

To help our growers find the best cover crop varieties for their region and system, we have been running a cover crop variety trial in Tennessee since 2019. We are excited to collaborate with the Southern Cover Crops Council this year to expand this trial and cover a 10-state region in the South. If you are in AL, AR, FL, GA, KY, NC, SC, TN, TX, or VA, we’ve got you covered! In this year’s report, you will find information important to maximizing those cover crop benefits, including cover crop biomass, canopy cover, and estimated nitrogen release, along with forage quality values for those who may be using cover crops for grazing (IVTDMD, CP, ADF, NDF, Lignin).

This past year was an odd one, with a cold snap in December that burst pipes across the South and was not so kind to some of our cover crop species. This does not reflect a typical year (at least I hope that isn’t our new normal!). For information on some of those more cold-sensitive species, looking at previous year’s reports may be helpful.

Southern Cover Crop Variety Trial 2023

Cover Crop Variety Trials in Tennessee Archives 2020 – 2022


2022 Soybean Variety Trials in TN – Now Available

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Results from the 2022 TN soybean variety trials are now available as pdf and excel files and will be posted at search.utcrops.com/soybean. Seventy-five varieties were evaluated in small plot replicated trials (REC) at nine locations and fifty-seven varieties were evaluated in three to nine locations as non-replicated large strip plots (CST).  Quality and agronomic traits are reported for the REC trials and disease data are reported for CST trials.  A summary of varieties that were in the yield “A group” (not statistically different from the top yield within each test) in either the REC or CST trial can be viewed here 2022 Soybean A Table.