Funded by the Illinois Soybean Association checkoff program.

Disease Management

PODCAST: Scouting for Late-Season Soybean Insects and Diseases

Jason Carr, CCA Soy Envoy and Bayer Crop Science Technology Development Representative, is on the podcast this week to discuss what soybean insects and diseases farmers should be scouting for in August. Listen to learn more. ILSoyAdvisor Podcasts · Scouting for Late-Season Soybean Insects and Diseases

By |August 19, 2020|

Fungicide Chemistry 101: What Do All of Those Terms and Chemical Names Mean?

The sights and sounds of airplanes, helicopters and ground sprayers in Illinois corn and soybean fields during July and August usually means one thing: foliar fungicide application season has begun. While fungicides have been common practice in high value crops for many years, the use of these chemistries in row crops like soybean has expanded rapidly during the last 10 to 15 years. There are many excellent articles and sources of data explaining the benefits of using fungicides in corn and soybean, so let’s instead focus on the language of fungicides and a few insights into how fungicides work. [...]

By |August 15, 2020|

Understanding Plant Hormones in Soybeans

As agronomists or producers, it’s our responsibility to understand how to properly manage a soybean crop for a given field’s conditions each season. Our goal should be to reduce as much stress to the soybean plant as we can, ultimately creating the right hormone balance. However, there are always situations that cause issues and for this we must continue to learn and develop on-farm trials to better understand how we should react when faced with a soybean agronomic issue. Stress on a soybean plant requires the extra use of stored energy to minimize the impact on the plant. When [...]

By |July 28, 2020|

Why Does Disease Management Matter?

I’m sure several people have seen ground applicators, planes and helicopters spraying fungicides on corn and soybean fields across Illinois. Usually the next few questions are typically, “I wonder why they are spraying?” “Should I be spraying?” “How much ROI could I get from this investment?” For many years’ fungicides have been promoted in production agriculture incorrectly. They do not increase yield by five, eight or 10 plus bushels per acre. They simply preserve the maximum yield potential that is already determined prior to the application of a fungicide. A fungicide treatment at R3-R4 can only protect a good [...]

By |July 26, 2020|

Stem Canker Management

This article was originally published on the Soybean Research & Information Network, a checkoff funded website. Stem Canker is a disease of soybean in the United States and Canada where infections occur primarily on the lower portion of the stem. Multiple fungi in the genus Diaporthe cause the disease. However, identifying and managing stem canker is similar regardless of which fungus is involved. There are similarities between symptoms of stem canker and other late season diseases, including White mold, Phytophthora stem and root rot, Sudden death syndrome and Brown stem rot. Field symptoms of stem canker can also look [...]

By |June 26, 2020|

Phytophthora Root and Stem Rot

This article was originally published on the Soybean Research & Information Network, a checkoff funded website. Phytophthora sojae is one of the most destructive soybean pathogens in the northern growing regions and a major cause of stand establishment problems. Seeds and seedlings can be infected and killed at any time after the seed has absorbed moisture. The fungus also infects plants later in the season following periods of heavy rain, causing stem rots or chronic root rot. Phytophthora root & stem rot develops quickly in warm, saturated soil. Phytophthora sojae belongs to a group of organisms called Oomycetes, also [...]

By |June 25, 2020|

2020 Fungicide Considerations

The 2020 season has developed into a very challenging year—and that was before the planting and replanting issues. Earlier this season national and international demand for corn and soybeans slowed down drastically, which dropped the current CBOT future prices $0.70/b under what federal crop insurance set the spring price for. So over the next month the question will undoubtedly come up, with a late planted crop and low market values would a fungicide application on soybeans be profitable? Protecting yield and increasing profitability Reasons to apply: A fungicide treatment is not a steroid; it won’t boost a soybean yield [...]

By |June 21, 2020|

Frogeye Leaf Spot Management

This article was originally published on the Soybean Research & Information Network, a checkoff funded website. Frogeye Leaf Spot (FLS) is the most important foliar disease of soybean, especially in the southern U.S. The disease has been occurring more frequently in northern soybean-growing areas and has increasingly suppressed soybean yields in the northern U.S. in recent years. FLS is caused by the fungus Cercospora sojina. Young soybean leaves are most susceptible, while older leaves tend to be more resistant. Leaf symptoms are first noticeable after plants begin to bloom. Infection occurs during warm, humid weather with cloudy days and [...]

By |June 20, 2020|

Illinois Department of Agriculture Dicamba Guidance

On June 9 the Illinois Department of Agriculture issued specific guidelines for Illinois for the use of existing stock of dicamba. This follows a decision on June 3, 2020, in National Family Farm Coalition vs. U.S. Environmental Protection Agency, Case No. 19-70115, where the United States Court of Appeals for the Ninth Circuit issued a ruling immediately vacating the registrations of Xtendimax®, FeXapan® and Engenia®, all of which contain the herbicide dicamba. On June 8, 2020, the U.S. Environmental Protection Agency (EPA) issued a final cancellation order for these three dicamba products. The final cancellation order can be found [...]

By |June 11, 2020|
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