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
WEBINAR: Why Plant Health is More than Just Disease
This post sponsored by:
BASFJune 25, 2020
Just like humans, crops are subject to stress caused by factors in their environment every day. And just like humans, if crops are stressed, they will not function and perform up to their maximum potential. In this webinar, we will gain an understanding of these factors that affect overall plant health, so that we can better understand why our crops perform the way that they do. We will also discuss plant health products that have the unique ability to not only control key diseases, but also help crops mitigate their reaction to environmental stresses that could negatively impact performance.
Presenter: Mike Probst, Technical Service Representative, BASF
- Plant Health – Goes beyond disease and disease control
- For many fungicides it means disease control
- Another aspect is environmental stress
- Disease Control
- Cercospora Leaf blight
- Frogeye leaf spot
- Target Spot disease
- The Impact of Disease on Soybean Yield
- Southern IL Fungicide Trial 2018 – 9 bushel response
- Southern IL Fungicide Trial 2018 – 6 bushel response
- Understanding Diseases: Signs vs Symptoms
- Sign – Physical evidence of the pathogen
- Symptom – A result or reaction to infection
- Preventative vs Curative Control
- Strobilurins for preventative – Prior to infection
- Triazoles for curative
- SDHIs are mixed bag
- Methods of Disease Control
- Mechanical control – Till residue under to prevent overwintering
- Cultural control – Resistant varieties, wider rows, crop rotation
- Chemical control – Fungicide
- Environmental stress abiotic sources:
- Insects
- Excess moisture
- Heat
- Drought
- Hail – severe weather
- Yield Loss from environmental stress
- Normally, 60-75% of flowers abort
- R4, moisture stress or high temperatures – reduces total pod number per plant
- R6 moisture stress reduces seed size
- Normally, 60-75% of flowers abort
- Impacts of Stress
- Ethylene production – Causes plant tissue to die (same thing causes crops to die and dry down in fall)
- Closed Stomata – stomata important for:
- Transfer of gases
- Transpiration
- Temperature regulation
- Reactive Oxidative Species – during stress
Illinois Soybean Association
The Illinois Soybean Association (ISA) checkoff and membership programs represent more than 43,000 soybean farmers in Illinois. The checkoff funds market development and utilization efforts while the membership program supports the government relations interests of Illinois soybean farmers at the local, state, and national level through the Illinois Soybean Growers (ISG). ISA upholds the interests of Illinois soybean producers through promotion, advocacy, and education with the vision of becoming a market leader in sustainable soybean production and profitability. For more information, visit the website www.ilsoy.org and www.ilsoygrowers.com.
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