Have Problems with Sudden Death Syndrome in Soybeans?

Aug 12, 2022

By Madison Kessler and Rodrigo Onofre

Researchers at K-State are in search of soybean fields showing symptoms of Sudden Death Syndrome (SDS) to sample.

What is Sudden Death Syndrome (SDS)?

It is a soil-borne fungal disease caused by Fusarium virguliforme. Infection and colonization begin shortly after planting and the pathogen produces a toxin that causes above-ground symptoms later in season.

What are the symptoms?

Root symptoms include necrosis (death) and above-ground symptoms include interveinal leaf chlorosis (yellow discoloration of the tissue) and necrosis (Figure 1). Under the right environmental conditions, these symptoms appear as early as the start of flowering.

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Figure 1. Sudden Death Syndrome foliar symptoms. Photos by Rodrigo Onofre, K-State Research and Extension.

What are the environmental conditions?

SDS is observed more when soybeans are planted in cool, wet soils followed by wet conditions at the beginning of flowering.

What are the management options?

Seed treatment, resistant cultivars, planting date, tillage, and crop rotation.

Source : ksu.edu

Video: Dicamba Returns for Georgia Farmers: What the New EPA Ruling Means for Cotton Growers

After being unavailable in 2024 due to registration issues, dicamba products are returning for Georgia farmers this growing season — but under strict new conditions.

In this report from Tifton, Extension Weed Specialist Stanley Culpepper explains the updated EPA ruling, including new application limits, mandatory training requirements, and the need for a restricted use pesticide license. Among the key changes: a cap of two ½-pound applications per year and the required use of an approved volatility reduction agent with every application.

For Georgia cotton producers, the ruling is significant. According to Taylor Sills with the Georgia Cotton Commission, the vast majority of cotton planted in the state carries the dicamba-tolerant trait — meaning farmers had been paying for technology they couldn’t use.

While environmental groups have expressed concerns over spray drift, Georgia growers have reduced off-target pesticide movement by more than 91% over the past decade. Still, this two-year registration period will come with increased scrutiny, making stewardship and compliance more important than ever.