Essential Nutrients for Onion Yield and Quality
CaTs® is a 100% water soluble calcium with a 0-0-0-10S-6Ca analysis. CaTs applied through the irrigation system can supply the necessary calcium and sulfur at critical growth and uptake times. Onion trials conducted in the PNW have show increased yield and improved storability.
The Importance of Adequate Calcium & Sulfur
Calcium
- Improves cell wall strength
- Increases disease resistance
- Helps reduce heat stress
- Reduces NH4 volatilization losses when applied with urea fertilizer
Sulfur
- Increase yields
- Increase pungency and flavor
- Improves nitrogen use efficiency
- Serves as structural component of proteins
Where & When You Need It
Application Timing
- Both calcium and sulfur are needed throughout the growing season
- Sulfur is needed when the plant is actively growing and utilizing nitrogen
- Peak calcium uptake occurs at bulb initiation
- Applying CaTs through the irrigation system 10-14 days after bulb initiation can supply much needed calcium and sulfur at critical times
Evaluation of CaTs and Calcium Chloride Effect on Yellow Onion Yield and Storage Shrink
A study conducted in Washington was able to demonstrate the increase of yield and storability of CaTs. The study included treatments of CaTs and CaCl2 based fertilizers and found that yield and storability was improved. Overall, the CaTs treatments increase yield and had reduced weight loss while in storage for 6 months.
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* Split applied at bulb swell and two additional applications every 3 weeks
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