Sustainability is a key factor in the development of new materials for plant pots, given the significant environmental impact of traditional plastic-based pots. Researchers have paid attention to developing biodegradable and sustainable alternatives to petroleum-based pots. In this study, two novel bioplastic formulations are developed, which incorporated soy-based by-product fractions to produce plant pots with self-fertilizing capability while also being cost-competitive. A 3D-printing process, fused filament fabrication, is used to produce plant containers from the filaments of soy-based new materials. Further, a small-scale greenhouse experiment is conducted to compare the performance of the soy-based 3D-printed bioplastic pots with pure polylactic acid (PLA) 3D-printed pots and traditional plastic pots, by growing a fruit-bearing plant (tomato) and a flowering plant (zinnia). Plant growth properties and root circling are analyzed, and the results show that the soy-based pots performed comparably to traditional plastic pots, especially in dry conditions, and also reduced root circling. While a more in-depth analysis is necessary, these initial findings suggest that using soy-based fractions and 3D-printing technology could provide a sustainable approach to developing plant pots, which could reduce the environmental impact of plastic-based containers and improve plant health.

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