Summary
This study synthesises lignin@ZnO hybrid materials using Kraft lignin as a capping agent via an ecofriendly protocol, combining the bioactive polyphenolic properties of technical lignin with zinc micronutrient delivery. In vivo trials on tomato plants demonstrated enhanced dry shoot weight and improved zinc translocation to aerial parts compared to zinc oxide alone, suggesting the hybrid material functions as an effective controlled-release biostimulant. The work demonstrates the potential for repurposing agro-industrial lignin waste as a value-added agronomic input within circular economy frameworks.
Regional applicability
The study does not specify a geographic location of field trials. The synthesis methodology and materials characterisation are location-independent and transferable. UK horticultural producers could potentially benefit from the hybrid material's zinc delivery properties, though local field trials would be needed to validate efficacy in UK soil and climate conditions, particularly for protected tomato cultivation.
Key measures
Dry shoot weight; zinc translocation to aerial parts; structural integrity of lignin matrix; morphology of ZnO nanoparticles
Outcomes reported
The study evaluated the synthesis and characterisation of lignin@ZnO hybrid materials and assessed their biostimulant potential in tomato plants. Measurements included dry shoot weight and zinc translocation to aerial plant parts, comparing the hybrid material against zinc oxide alone.
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