2016
Stem Canker Resistance
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Contributor/Checkoff:
North Carolina Soybean Producers Association
Category:
Sustainable Production
Keywords:
Crop protectionDiseaseField management
Parent Project:
This is the first year of this project.
Lead Principal Investigator:
Lindsay Thiessen, North Carolina State University
Co-Principal Investigators:
Project Code:
16-032
Contributing Organization (Checkoff):
North Carolina Soybean Producers Association
(n/a)
Institution Funded:
North Carolina State University
(n/a)
Brief Project Summary:

Southern stem canker is a relatively new soybean disease in North Carolina. In 2015, this disease severely affected whole fields on at least two farms and developed much more rapidly than expected. In one case, it expanded from one field to several fields on several farms in the same neighborhood. In both cases, the disease appeared early enough during reproductive growth that yields were probably significantly reduced. This on-farm research intends to verify resistance to southern stem canker claims of several soybean varieties, and to determine if disease symptoms are similar among several varieties. It will also provide training and support to learn more about this disease.

Key Benefactors:
farmers, agronomists, extension agents

Information And Results
Final Project Results

Replicated on-farm tests were established in Beaufort, Halifax, and Person counties to document the level of resistance to southern stem canker in many of our more popular soybean varieties, and to provide a more-likely-than-usual opportunity to observe stem canker development in North Carolina. Stem canker has seldom been documented in NC, but two fields (the ones the 2016 Halifax and Person County tests were located in) were completely destroyed (100% of the plants died prematurely) by stem canker in 2015.

Very little stem canker was detected in Beaufort or Halifax counties, and the stem canker observed in Person County was not nearly as severe as in the same field in 2015. Nor did it develop as early in the season. Almost all the stem canker observed in these three tests was in the two varieties rated susceptible to stem canker, leading us to conclude that the ratings were probably pretty close to accurate.

The United Soybean Research Retention policy will display final reports with the project once completed but working files will be purged after three years. And financial information after seven years. All pertinent information is in the final report or if you want more information, please contact the project lead at your state soybean organization or principal investigator listed on the project.