All posts by Virginia Sykes, Extension Variety Testing & Agroecology

Mid-South soybean variety testing database survey

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Growing regions often cross state lines but variety test information is typically reported by state. To provide stakeholders with a clearer picture of variety performance, a project is underway to develop a web-based, Mid-South soybean variety testing database that allows end-users to summarize and filter yield, quality, and phenotypic data based on location characteristics that cross multiple states. This research is being performed as a collaborative project with the University of Tennessee, University of Kentucky, Virginia Tech, NC State, and University of Arkansas and is funded by the United Soybean Board. Input from those involved in soybean production (grower, seed industry, Extension, crop advisor) is important for developing a product that best meets the needs of stakeholders. If you are interested in providing input for this research project, the survey can be found at soybeandatabase.questionpro.com (respondents must be 18 or older). If you have any additional questions regarding this project, please contact the lead PI, Dr. Virginia Sykes, at vsykes@utk.edu.


Soybean Herbicide Trait Summary

Herbicide resistant traits available in soybean continue to increase.  It does not seem that long ago that there was either Roundup Ready or conventional soybean.  There are no less than eight different soybean herbicide resistant traits available today with the most recent being XtendFlex soybean.  Continue reading


Soybean Variety Tests in Tennessee 2020 – Publication Available

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The 2020 Tennessee soybean variety trial results have been finalized and are now available. You can access the pdf or excel tables on search.utcrops.com/soybean. Our searchable, sortable online tables and database will be available within a couple of weeks.


Corn Grain Hybrid Tests in Tennessee 2020 – Publication Available

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The 2020 Tennessee corn grain hybrid trial results have been finalized and are now available. You can access the pdf or excel tables on search.utcrops.com/corn-grains. Our searchable, sortable online tables will be available within a couple of weeks.


Cover Crop Variety Trial Results

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Are you thinking about putting in a cover crop this fall? While cover crops can provide many benefits, picking the right species and varieties for your system is critical to maximizing those benefits. Check out our 2020 cover crop variety trial results for a head-to-head comparison of 60 cover crop varieties at three TN locations.

Cover crops were planted in fall 2019 and evaluated for a number of important traits, including fall and winter canopy cover, biomass at termination (April and May), and estimated nitrogen release.

  • Top-performing cereal varieties, including Bates RS4 cereal rye, NF95319B cereal rye, NF 97325 cereal rye, NF99362 cereal rye, and Wintergrazer 70 cereal rye, excelled at providing fall canopy cover and spring biomass,
  • Top-performing legume varieties, including AU Merit hairy vetch, Survivor winter pea, Purple Bounty hairy vetch, Patagonia Inta hairy vetch, and WinterKing hairy vetch, excelled at providing winter canopy cover, spring biomass, and nitrogen release.
  • Top-performing brassica varieties, including Viva hybrid brassica, Digger radish, and Smart radish provided above average fall and winter canopy cover at the East and West TN locations.

More information can be found in the full publication or excel tables. A virtual tour of the plots was also presented at the virtual Milan no-till field day and is available here.


Tennessee Corn Grain REC Data Now Available

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Our county corn trial numbers are still rolling in, but results are up for the small plot trials performed at the University of Tennessee AgResearch and Education Center locations. Results can be found at search.utcrops.com/corn-grains as both web tables or as a downloadable excel file. These tables will be updated with county data as soon as that is available.

AgResearch and Education Center (REC) plots are 5 ft (2, 30 in rows) by 30 ft and are replicated three times per location. Total number of entries was on par with most years, totaling 89 corn hybrids, representing 14 company/brands. Continue reading


2019 Tennessee Corn Silage Hybrid Trial

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Our 2019 Tennessee corn silage hybrid trial report is now available on search.utcrops.com/corn-silage. We had fewer hybrids than usual this year and all produced similar yields, averaging 8.4 tons/ac dry weight. Differences did show in terms of quality, however, with some hybrids producing significantly higher milk/ton. Mean separation (MS) values help us identify statistical differences between hybrids. Look for the “A” group to identify hybrids that were top performers within each trait. If looking at the online tables, be sure to scroll right to see all of the quality and agronomic traits evaluated.  Online tables can be found here or download the pdf and/or excel tables.