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BRANDT Sequestar is a water-soluble iron chelate powder with 11% iron as Fe-DTPA. The DTPA bond keeps iron available across a pH range of 4.0 to 7.5, so it holds up in alkaline soils and in hydroponic and drip systems where plain iron sulfate precipitates and locks up. It can go on as a soil drench for prevention or as a foliar spray for fast correction of chlorosis, and it dissolves clean enough for injection and spray equipment. It suits growers with high-pH soil, container and hydroponic setups, and turf or ornamental managers fighting yellowing. Against iron sulfate or EDDHA chelates, DTPA is more pH-tolerant than sulfate but less stable than EDDHA above pH 7.5, so very alkaline soils still favor EDDHA.
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Lowest price we've seen: $230.95 on Nov 11 at Evolve Garden Supply. Tracked across 1 store since Nov 11.
Growers using DTPA iron chelates like this one generally report fast greening on chlorotic plants and clean dissolving in tank mixes. Complaints center on the cost per acre versus plain iron sulfate and on the need for repeated applications in very alkaline soils.
BRANDT Sequestar 11% Fe DTPA is a fully chelated iron fertilizer in a water-soluble powder. It is used to correct iron deficiency chlorosis. The DTPA chelation keeps iron available across a pH range of 4.0 to 7.5, including in alkaline soils and hydroponic systems.
The powder dissolves completely without residue. It can be used in injection systems, drip irrigation and spray applications. It can be applied as a soil drench for prevention or as a foliar spray for correction.
It is used on vegetables, fruits, nuts, vines, berries, ornamentals, turf and hydroponic crops. Visible greening is expected within 7 to 14 days of application.
