2018
Screening NC OVT Soybeans for Potential Resistance to Meloidogyne enterolobii
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Contributor/Checkoff:
North Carolina Soybean Producers Association
Category:
Sustainable Production
Keywords:
NematodePest
Parent Project:
This is the first year of this project.
Lead Principal Investigator:
Lindsay Thiessen, North Carolina State University
Co-Principal Investigators:
Project Code:
18-061
Contributing Organization (Checkoff):
North Carolina Soybean Producers Association
$17,310
Institution Funded:
North Carolina State University
$17,310
Brief Project Summary:

The recent introduction of a new root knot nematode species, Meloidogyne enterolobii, to North Carolina threatens profitable soybean production. It is significantly more aggressive than others found here, and it appears to regenerate population densities to damaging levels even with fumigation. It has a wide host range, including many weeds and several rotational crops, like vegetables, sweet potatoes and tobacco. Chemical controls for nematodes in soybean are limited due to costs and limited economic return. Identification of varietal resistance is critical. This project screens the official variety trial to assess potential mechanisms for resistance as well as identify the sensitivity of commercial varieties to this new root knot nematode.

Key Benefactors:
farmers, agronomists, extension agents

Information And Results
Final Project Results

The recent introduction of the guava root knot nematode, Meloidogyne enterolobii, to North Carolina threatens profitable soybean production in this state. Currently,8counties have been confirmed with this nematode, and a separate survey to identify counties with this nematode is ongoing. This nematode is significantly more aggressive than the other root knot nematode species found in NC, and rapidly reproduces, causing damaging populations. Additionally, this nematode has a wide host range that affects numerous weed species and several rotational crops, including vegetable crops, sweet potatoes, and tobacco. Chemical controls for general nematode control in soybean are limited due to the costs of application and the limited economic return with their application. Identification of varietal resistance is important to continue to economically produce soybean, with this pest continuing to spread in North Carolina. This project identified several varieties with low reproduction of M. enterolobii, which may lead to improved management recommendations.

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.