Professional-Grade Iron Chelate for Superior Nutrient Availability

BRANDT® Sequestar® 11% Fe DTPA delivers fully chelated iron in a highly stable, water-soluble powder form designed for maximum plant uptake and rapid correction of iron deficiency chlorosis. The DTPA chelation ensures iron remains available across a wide pH range (4.0-7.5), making it the preferred choice for alkaline soils and hydroponic systems where iron availability is typically compromised.

Key Benefits

• Rapid Greening Response: Chelated iron is immediately plant-available, delivering visible results within 7-14 days of application
• pH Stable Formula: DTPA chelation maintains iron solubility even in alkaline conditions where conventional iron sources precipitate
• Dual Application Flexibility: Apply as a soil drench for long-term prevention or as a foliar spray for fast correction
• Clean, Complete Solubility: Dissolves completely without residue, ideal for injection systems, drip irrigation, and spray applications
• Broad Crop Compatibility: Safe and effective on vegetables, fruits, nuts, vines, berries, ornamentals, turf, and hydroponic crops

Technical Specifications

• 11% chelated iron (Fe) as Fe-DTPA
• 100% water soluble powder
• Effective pH range: 4.0-7.5
• 25 lb. bag treats approximately 5-10 acres depending on application method and severity
• LABEL
• SDS

Application Guidelines

Soil Application (Prevention): Apply 5-10 lbs per acre through drip irrigation or as a soil drench at planting or during early vegetative growth. Reapply as needed based on tissue testing.

Foliar Application (Correction): Mix 1-2 lbs per 100 gallons of water and spray to runoff. Apply during cooler parts of the day for optimal absorption. Repeat every 7-14 days until symptoms resolve.

Hydroponics: Maintain 1-3 ppm Fe in nutrient solution. Monitor and adjust based on crop requirements and growth stage.

Why Iron Chelation Matters

In alkaline soils and growing media (pH above 7.0), conventional iron sulfate quickly converts to insoluble forms that plants cannot absorb. DTPA chelation "protects" the iron molecule, keeping it in solution and plant-available even under challenging conditions. This translates to better crop performance, deeper green color, and higher yields—especially in high-value crops where iron deficiency can significantly impact quality and marketability.

Professional growers trust Sequestar for consistent results in demanding production environments. Whether you're managing acres of specialty crops or fine-tuning a hydroponic system, this is the iron source that delivers.