University of Georgia Research Proves Magna-Bon CS 2005 Controls Botrytis and Center Rot in Onions
Research conducted by the Dr. David Langston – University of Georgia – Vidalia demonstrates the exceptional performance of Magna-Bon CS 2005 in controlling Botrytis and Center Rot in onions — two of the most destructive diseases impacting onion growers today.
Research Overview
The untreated control plots showed only 40% disease control, while treatments with Magna-Bon CS 2005 achieved over 99% control, setting a higher standard for effective and sustainable onion disease management.
Treatment Programs and Results
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Treatment 1:
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Transplant dip in Magna-Bon CS 2005 at 50 ppm
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Soil drench at 1 oz (50 sq. ft. coverage)
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Two foliar spray applications at 75 ppm
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Result: Over 99% disease control
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Treatment 2:
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Two foliar spray applications of Magna-Bon CS 2005 at 75 ppm
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Result: Over 99% disease control
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Treatment 3:
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Transplant dip in Magna-Bon CS 2005 at 50 ppm
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One spray application at 75 ppm
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Result: Over 99% disease control
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Why Onion Growers Choose Magna-Bon CS 2005
Magna-Bon CS 2005 isn’t just another copper — it’s a proven, research-backed copper sulfate pentahydrate solution that gives onion growers the power to get ahead of disease pressure before it impacts yield or quality.
🧱 Protects Against Copper-Resistant Strains – Delivers systemic, reliable disease control where traditional products fall short.
🌎 Sustainable & Efficient – Uses less than 1/8 lb. of metallic copper per acre, reducing environmental impact without sacrificing performance.
🌿 OMRI-Listed for Organic Use – Certified by the Organic Materials Review Institute (OMRI) — approved for organic production systems.
🔬 Field-Tested Results – University-proven to deliver over 99% control of Botrytis and Center Rot, helping protect yield potential and profit.
🔁 Flexible Application Options – Can be used as a transplant dip, soil drench, or foliar spray to fit your operation’s needs.
Proven Protection. Proven Profit.
When disease pressure rises, Magna-Bon CS 2005 gives onion growers a clear advantage — proven control, fewer losses, and stronger returns from every acre.
Backed by research. Trusted by growers. Proven performance.
Contact us to learn how CS 2005 can fit into your onion disease management program this season.