Pick up know-how for tackling diseases, pests and weeds.
Farm bill, farm marketing, agribusiness webinars, & farm policy.
Find tactics for healthy livestock and sound forages.
Scheduling and methods of irrigation.
Explore our Extension locations around the state.
Commercial row crop production in Arkansas.
Agriculture weed management resources.
Use virtual and real tools to improve critical calculations for farms and ranches.
Learn to ID forages and more.
Explore our research locations around the state.
Get the latest research results from our county agents.
Our programs include aquaculture, diagnostics, and energy conservation.
Keep our food, fiber and fuel supplies safe from disaster.
Private, Commercial & Non-commercial training and education.
Specialty crops including turfgrass, vegetables, fruits, and ornamentals.
Find educational resources and get youth engaged in agriculture.
Gaining garden smarts and sharing skills.
Timely tips for the Arkansas home gardener.
Creating beauty in and around the home.
Maintenance calendar, and best practices.
Coaxing the best produce from asparagus to zucchini.
What’s wrong with my plants? The clinic can help.
Featured trees, vines, shrubs and flowers.
Ask our experts plant, animal, or insect questions.
Enjoying the sweet fruits of your labor.
Herbs, native plants, & reference desk QA.
Growing together from youth to maturity.
Crapemyrtles, hydrangeas, hort glossary, and weed ID databases.
Get beekeeping, honey production, and class information.
Grow a pollinator-friendly garden.
Schedule these timely events on your gardening calendar.
Equipping individuals to lead organizations, communities, and regions.
Home to the Center for Rural Resilience and Workforce Development.
Guiding entrepreneurs from concept to profit.
Position your business to compete for government contracts.
Find trends, opportunities, and impacts.
Providing unbiased information to enable educated votes on critical issues.
Increase your knowledge of public issues & get involved.
Research-based connection to government and policy issues.
Support Arkansas local food initiatives.
Read about our efforts.
Find workforce info and Economic Development Administration resources.
Preparing for and recovering from disasters.
Licensing for forestry and wildlife professionals.
Preserving water quality and quantity.
Cleaner air for healthier living.
Firewood & bioenergy resources.
Managing a complex forest ecosystem.
Read about nature across Arkansas and the U.S.
Learn to manage wildlife on your land.
Soil quality and its use here in Arkansas.
Learn to ID unwanted plant and animal visitors.
Timely updates from our specialists.
Eating right and staying healthy.
Ensuring safe meals.
Take charge of your well-being.
Cooking with Arkansas foods.
Making the most of your money.
Making sound choices for families and ourselves.
Nurturing our future.
Get tips for food, fitness, finance, and more!
Explore the art of homesteading with our expert guidance.
Understanding aging and its effects.
Giving back to the community.
Managing safely when disaster strikes.
Listen to our latest episode!
Subscribe to Post Updates from Arkansas Row Crops
Sign Up for Newsletter Updates
Subscribe to SMS Updates from Arkansas Row Crops
Listen to Our Latest Crops Podcast
Listen Now
Hot Publications
Suggested Links
Rice Farming
Cotton Farming
Peanut Grower
Delta Farm Press
by Michael Emerson, Brandon Baker, and Travis Faske - December 9, 2022
The southern root-knot nematode (Meloidogyne incognita) is the most yield-limiting plant-pathogenic nematode that affects soybean production in the Mid-South. It is found in nearly all soybean counties in Arkansas. It can cause significant (>70%) grain yield losses when a susceptible variety is used in a field with a high population density of southern root-knot nematode (RKN). Thirty-six commercially available soybean varieties marketed as resistance to the southern RKN were screened. Varieties were divided into 3 experiments (Table 1 to 3) based on maturity group. Varieties were planted in a randomized complete block design with four replications per entry. Plots were planted on 14 June in a field with moderate nematode pressure sampled in the fall. Six root systems were arbitrarily sampled at R5 growth stage from non-harvest rows of each plot to assess southern RKN susceptibility. These results and those on the UA variety testing website can be helpful for variety selection for the 2023 cropping season.
Field performance of soybean varieties from previous trials (2016, 2017, 2018, 2019, 2020, and 2021) can be found on the UA Research Series website.
What else is important: Overall, the percentage of root system galled was lower than in previous years. Therefore, varieties categorized as moderately resistant (MR) can easily be moderately susceptible (MS) when nematode stress and moisture stress are greater. However, selecting a less susceptible variety will yield more than a susceptible one. For example, Progeny 4444 RXS would be expected to have a lower percent root system galled and greater yield than DM48E62S, but not compare to Stine 46EB22 if planted in the same field. Finally, consult the cross-reference guide for soybean varieties to ensure different varieties selected are not the same genetics.
If you have any questions, please contact tfaske@uada.edu.