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Tropical Fruit Discussion / Re: One time use Chelated Iron EDDHA
« on: March 24, 2023, 02:18:07 PM »You might want to try sulfur. Given your location, Sheehan, you should be able to easily acidify your soil to the point where good old granular fertilizer supplies sufficient iron. The soil I had imported from delray beach responds very favorably to sulfur application. All of my ph sensitive trees that are in that soil are doing phenomenally.
Yes, Sulfur and copious amounts of organic mulch can really help eliminate the need for chelated iron drenches...
Even when growing upon limestone/in sandy alkaline soil? My interest is certainly piqued.
Yes, I am on limestone, but with more of a red laterite dust mixed with sand. 8.2 ph. After laying down casaurina straw mulch and wood chips and spreading sulfur and dry humates over the past four years, I no longer see iron deficiency issues.
We have limestone and sand in Florida. Usually if a plant has yellow leaves it's a nitrogen deficiency though iron is a factor. The sand just doesn't hold nutrients. Simple solution dig a hole fill it with compost and maybe perlite or add a little clay even. Or just fertilize all the time but then most of it goes into the water supply causing algae blooms.