In 2018 I received some images on my cell phone. These images were of red crown rot, a soybean disease I had encountered while I was the field crop pathologist at the University of Delaware. The images clearly showed distinctive brick red, pinhead sized “balls” aggregated on the lower stems of the plant. My immediate response to the individual who sent the images was “That’s red crown rot (RCR)- It’s typically a non-issue and routinely found in... Read More →
ILSOYADVISOR POST
Agronomics: Mid-July Soybean Update: Standing Water, Root Diseases
July 29, 2014
Although soybeans appear to be improving, there are still some areas where soybeans are staying yellow. Most of this yellowing has to do with water tolerance. In the image above the soybeans in the forefront are yellow (the wettest area) and as the field slopes up the soybeans turn green. As a reminder, soybean nodules need oxygen to breathe and as long as soils stay saturated it is difficult for nodules to produce nitrogen.
With the saturated soils there is more root diseases. In the past week I have noticed more fields with either Rhizoctonia or Fusarium in the roots. The roots with these diseases are not producing many nodules. In fact, I have noticed some SDS (which is caused by Fusarium) starting to form on some varieties (image to the right). SDS symptoms usually occur later in the year, but if it shows up earlier this year it will have more of a yield impact. Fungicides will not help to control SDS. There are varietal differences and from what I can tell this year it is based on root health.
For more Beck’s Illinois Agronomic Soybean News, please visit the IL Agronomy page at www.beckshybrids.com.
NE Illinois agronomy questions can be sent to Chad Kalaher, CCA: chad.kalaher@beckshybrids.com
NW Illinois agronomy questions can be sent to Craig Kilby, CCA: craig.kilby@beckshybrids.com
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