Boron is an essential micronutrient that is critical for soybean plants to thrive. It is required for cell wall and xylem formation, cell elongation, metabolism of nitrogen and more. However, the incorrect amount of boron can lead to visibly stunted and unhealthy plants. Nathan Slaton, Ph.D., professor of soil fertility at the University of Arkansas, led the webinar below and provided numerous helpful soybean photos that growers can reference to recognize boron deficiency or toxicity in their fields.
Key Takeaways:
- Conditions that can contribute to boron deficiency:
- High pH soil, above 6.5
- Soils with low organic matter
- Dry soil conditions
- Recent lime application
- Shallow soil or rooting depth
- Signs of boron-deficient plants:
- Dark green instead of light green leaves
- Oddly shaped leaves
- Stunted growth
- Plants deficient in boron retain their leaves longer during harvest time.
- A tissue test is one of the most efficient ways to diagnose boron toxicity or deficiency.
- Soil tests and seed tests are other options that will also indicate too much or too little boron.
- 20 – 60 parts per million of boron is the ideal range for soybeans.
One CEU in Nutrient Management is available for this webinar. Visit the Certified Crop Adviser website to self-report your credit after viewing the webinar recording.
About the Author: Illinois Soybean Association
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