The 71st Annual Northeast Indiana Regional Science and Engineering Fair, held at Purdue University Fort Wayne on March 21, featured a diverse array of K-12 research projects focused on environmental sustainability and resource management. Among the notable participants in the Elementary Division was Laasya Katam from Eel River Elementary, whose “Waste to Wonders” study evaluated the functional benefits of biocharBiochar is a carbon-rich material created from biomass decomposition in low-oxygen conditions. It has important applications in environmental remediation, soil improvement, agriculture, carbon sequestration, energy storage, and sustainable materials, promoting efficiency and reducing waste in various contexts while addressing climate change challenges. More in agricultural applications. This regional event serves as a platform for identifying scalable solutions to local ecological challenges, with community organizations like the Fox Island Alliance recognizing projects that align with conservation and environmental health goals in the United States.

The primary challenge addressed in the “Waste to Wonders” project is the optimization of water use efficiency in plant cultivation, particularly the need to maintain soil moisture with reduced irrigation inputs. In many agricultural contexts, traditional soil and synthetic fertilizers often fail to retain sufficient water, leading to rapid evaporation or nutrient leachingLeaching is the process where nutrients are dissolved and carried away from the soil by water. This can lead to nutrient depletion and environmental pollution. Biochar can help reduce leaching by improving nutrient retention in the soil.   More. This creates a dependency on high-volume watering schedules which can be unsustainable during periods of low precipitation. Finding a carbon-rich amendment that can simultaneously support plant physiology while acting as a reservoir for moisture is critical for improving crop resilience in varying soil types.

To address these limitations, the researcher implemented a comparative growth study using three types of bean plants. The experimental design tested four distinct variables: untreated soil, soil with conventional fertilizer, soil amended with wood-derived biochar, and a combined application of biochar and fertilizer. By introducing biochar—a stable, porous carbon medium—into the soil matrix, the experiment sought to leverage the material’s high surface area to hold water molecules and nutrients in the root zone. This solution focused on the synergy between the structural properties of biochar and the chemical boost of traditional fertilizers to enhance the overall growing environment.

The outcomes of the study indicated that bean plants grown in biochar-amended soil exhibited superior growth metrics compared to those grown in soil alone. The results confirmed that biochar effectively retains moisture and provides a carbon-rich environment that promotes plant development even with limited water resources. For these findings, the Fox Island Alliance awarded the researcher a membership and environmental recognition, highlighting the project’s contribution to sustainable land management. This localized study reinforces the technical consensus that biochar serves as an effective soil conditioner for moisture conservation and enhanced biomassBiomass is a complex biological organic or non-organic solid product derived from living or recently living organism and available naturally. Various types of wastes such as animal manure, waste paper, sludge and many industrial wastes are also treated as biomass because like natural biomass these More production.