iron-deficiency

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Fermented fruit waste supercharges iron fertilizer for better radish harvests

PubMed · 2026-07-07

Mixing fermented fruit-waste liquid (called garbage enzyme) with standard iron fertilizer dramatically boosts iron availability in the hard-to-farm alkaline soils that cover much of the world's cropland, nearly doubling radish yields in greenhouse tests.

Co-applying garbage enzyme (3.2%) with FeSO4 (22.3 mg/kg) increased plant-available soil iron by 364%, from 2.8 to 13.0 mg/kg DTPA-extractable iron.

Radish tuber dry weight increased 74.1% and root dry weight increased 144.5% compared to the untreated control.

Soil pH stayed stable at 7.8-7.9 and electrical conductivity unchanged at 0.8-0.9 dS/m, showing no harmful salt or acidification side effects.

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iron-deficiency

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