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| Home > Publications database > Mechanochemical Activation of Elemental Sulfur Increases Its Bioavailability in the Forage Species Brachiaria Production |
| Home > Publications database > Mechanochemical Activation of Elemental Sulfur Increases Its Bioavailability in the Forage Species Brachiaria Production |
| Journal Article | FZJ-2023-00186 |
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2022
ACS Publications
Washington, DC
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Please use a persistent id in citations: http://hdl.handle.net/2128/33553 doi:10.1021/acsagscitech.2c00248
Abstract: Although sulfur is an essential macronutrient for plants, its supply through elemental S0 is not efficient, demanding its oxidation by soil microbiota before plant uptake. Thus, we demonstrate that a simple reactive mechanochemical route, using anhydrous KOH as a reactant with no need for water addition, can convert S0 to bio-absorbable oxidized forms, leading the residual K+ a plant nutrient in the final composition. The powdery products obtained by 1 h (S-1h) or 8 h (S-8h) milling have been fully converted to HSO3-, SO32-, and SO42-, also suggesting different amounts of these sulfur oxides according to the milling. S-1h and S-8h were efficient for S and K fertilization, probed on the successful growing of the forage crop Brachiaria ssp. in a greenhouse trial, with similar biomass yields observed for K2SO4 (positive control) and superior to S0 + KCl (negative control). These data suggest that the mechanochemical process provides a sustainable route to increase sulfur plant bioavailability, suggesting a simple alternative that can be easily implemented in forage plant production sites such as Brachiaria ssp.
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