Recycled Glass Used to Grow Plants for Salsa Ingredients: Pilot Study
Tortilla chips and fresh salsa are delicious on their own, but growing the ingredients in a sustainable way can make them even more appealing. Researchers have discovered that cilantro, bell pepper, and jalapeño can be grown in recycled glass from pulverized bottles, such as those used for beer or soda. This innovative method not only speeds up plant development but also reduces unwanted fungal growth.
The researchers will be presenting their findings at the upcoming fall meeting of the American Chemical Society.
Julie Vanegas, a nanomaterial scientist at The University of Texas Rio Grande Valley, teamed up with ecologist Teresa Patricia Feria Arroyo to explore the use of recycled glass particles for growing produce. They conducted experiments to grow familiar and quickly maturing foods, such as those used in pico de gallo, in containers and backyard gardens.
By using recycled glass particles obtained from a company that repurposes bottles, the researchers found that the glass fragments, when mixed with soil, provide ideal conditions for plant growth. The glass particles, similar in size to coarse sand grains, allow oxygen to reach the roots and retain sufficient moisture for cultivation.
Preliminary results show that plants grown in a mixture of more than 50% glass particles exhibit faster growth rates and better water retention compared to those grown in traditional soil alone. Additionally, pots containing glass particles did not develop fungal growth, unlike those with 100% soil.
This environmentally friendly approach to growing produce without the use of chemicals like fertilizers and pesticides is not only beneficial for the crops but also for the health of those living near agricultural areas. By reducing chemical usage and promoting recycling, this method aims to improve the quality of life for communities.
The research was supported by grants from the U.S. Department of Agriculture’s National Institute of Food and Agriculture and the U.S. National Science Foundation, as well as Glass Half Full, the company supplying the glass particles.
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Michael Thompson earned his degree in Agricultural Engineering from Purdue University in the USA, specializing in precision agriculture and smart farming technologies. His work revolves around the development of automated systems that increase farm efficiency and reduce environmental impact. Michael is now a senior engineer at a leading agri-tech company, where he designs innovative solutions for modern agriculture.