Mulch Matters

In this episode of Mulch Matters, host Dr. Nataliya Shcherbatyuk sits down with Dr. Karl Englund (Washington State University) and Dr. Kun Zhang (California State University, Chico) to explore one of the most challenging—and promising—topics in agricultural sustainability: recycling plastic mulch. Karl and Kun share how their backgrounds in recycled plastics, composites, and asphalt engineering led them into this interdisciplinary project. Together, they unpack the realities of contamination, soil adhesion, fumigant residues, and the complex logistics of collecting agricultural plastics. As Karl notes, "the contamination of the soil is probably the biggie" and Kun highlights that "plastic mulch recycling in asphalt is a technically sound solution." Listeners will learn: Why agricultural plastics are harder to recycle than post‑consumer plastics How asphalt pavement can serve as a value‑added recycling pathway How soil type, contamination levels, and rheology affect recyclability What future technologies may reshape plastic mulch end‑of‑life management This episode offers a rare behind‑the‑scenes look at the science, engineering, and collaboration driving new solutions for agricultural plastic waste. This work is supported by Specialty Crops Research Initiative Award 2022-51181-38325 from the USDA National Institute of Food and Agriculture. Any opinions, findings, conclusions, or recommendations expressed on this podcast are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture. Intro and outro music credit to Zakhar Valaha from Pixabay

In this episode we have an engaging conversation with Kevin DeWhitt, the founder of PDO Technology, about the pressing issue of plastic waste management in agriculture. As the world grapples with plastic pollution, innovative solutions are needed to tackle this environmental challenge. Kevin brings his expertise in pyrolysis, a cutting-edge process that breaks down plastic mulch waste and repurposes it into valuable resources. This process not only reduces landfill dependency but also supports a circular economy, promoting sustainability in agricultural practices. During our discussion, Kevin explains the intricate workings of PDO Technology and how it efficiently processes agricultural plastics, even when they are contaminated with soil or organic matter. Unlike conventional recycling methods that struggle with dirty plastics, PDO's technology thrives in handling the toughest waste, ensuring that no plastic is left behind. He also highlights the importance of collaboration with farmers, universities, and industry leaders to create a comprehensive approach to waste management. The conversation delves into the challenges and breakthroughs in plastic recycling, from logistical hurdles in waste collection to technological advancements that make recycling more feasible. Kevin shares insights into the evolving landscape of sustainable agriculture and how innovative solutions are shaping the future. His passion for sustainability is evident as he discusses the potential for widespread adoption of these technologies, paving the way for a more responsible and efficient system for handling plastic waste. As the world shifts towards more sustainable practices, it is crucial to explore viable alternatives for managing agricultural plastics. This episode provides valuable insights into the role of science, technology, and collaboration in driving meaningful change. Listeners who are interested in cutting-edge recycling technologies, sustainable farming, or practical solutions for plastic waste management will find this discussion both informative and inspiring. This work is supported by Specialty Crops Research Initiative Award 2022-51181-38325 from the USDA National Institute of Food and Agriculture. Any opinions, findings, conclusions, or recommendations expressed on this podcast are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture. Note: intro and outro music credit to Zakhar Valaha from Pixabay https://pixabay.com/music/introoutro-motivational-ident-main-9923/

In this episode of the Mulch Matters Podcast, we welcome Ben Weiss, a graduate student at Washington State University, to share his journey from construction to agriculture and his passion for sustainable practices. Ben dives into his innovative research on hydromulch, a biodegradable, paper-based mulch technology designed for organic growers. We explore how hydromulch works, its potential alternative option to plastic mulch, and the challenges of adopting this emerging technology on a commercial scale. Ben also shares insights into the environmental impact of PFAS ("forever chemicals"), the hurdles of biodegradable mulch adoption in organic farming, and the critical role of consumer preferences in shaping sustainable agricultural practices. Note: intro and outro music credit to Zakhar Valaha from Pixabay https://pixabay.com/music/introoutro-motivational-ident-main-9923/

In this episode of Mulch Matters, we are joined by Dr. Lisa DeVetter, Associate Professor in the Department of Horticulture at Washington State University and our project director. We dive into the fascinating world of mulch and its significant impact on agriculture and the environment. Dr. DeVetter shares insights into the history, benefits, and global significance of polyethylene (PE) plastic mulch, especially in strawberry production, and addresses the growing concerns surrounding plastic waste. We explore innovative alternatives like biodegradable mulches (BDMs) and discuss their potential as a sustainable solution. Tune in to learn about the latest research, challenges, and future possibilities in mulching technologies, as well as the importance of making informed decisions for agriculture. Don't miss this enlightening conversation packed with expertise, practical tips, and a look into exciting advancements in sustainable mulch management! Note: intro and outro music credit to Zakhar Valaha from Pixabay https://pixabay.com/music/introoutro-motivational-ident-main-9923/

In this episode of the Mulch Matters Podcast, we dive into the world of sustainable agriculture with James duBois, Senior Manager of Environmental Sustainability at Driscoll's. With over 15 years of experience in water stewardship and environmental risk management, James shares invaluable insights on reducing field plastics and improving sustainability practices in berry production. Learn about Driscoll's journey as a fifth-generation family-owned company, their commitment to environmental stewardship, and the innovative approaches they're taking to minimize the impact of field plastics. From high tunnels to drip tapes, James discusses the various applications of field plastics in berry production and the strides Driscoll's is making towards their ambitious recycling goals. Please note that since the recording of this podcast in Fall 2023, Driscoll's has made significant progress toward their goal of recycling 100% of field plastics. Starting with zero acres in 2022, Driscoll's nurseries and growers have already recycled nearly 8,000 acres of fumigation and bed mulch plastic, including 3,000 acres of bed mulch in 2024 alone. This progress marks a significant milestone for the industry and brings Driscoll's one step closer to meeting their 2025 recycling goals. Don't miss this fascinating conversation about the challenges and breakthroughs in making berry farming more sustainable and environmentally friendly. Tune in to hear how Driscoll's is leading the way in reducing plastic waste and shaping the future of agriculture. Note: intro and outro music credit to Zakhar Valaha from Pixabay https://pixabay.com/music/introoutro-motivational-ident-main-9923/

In this episode, we sit down with Dr. Dilpreet Bajwa, Professor and Head of the Mechanical and Industrial Engineering Department at Montana State University. Dr. Bajwa shares his fascinating journey from growing up on a farm to leading innovative research in biomaterials and bioproducts, particularly hydromulch. He explains hydromulch, its benefits, and its applications in sustainable and organic agriculture. Learn how hydromulch can help suppress weeds, reduce evaporation, maintain soil temperature, and improve soil fertility—all while being environmentally friendly. Dr. Bajwa also discusses the potential for hydromulch to be used in organic farming and how it compares to traditional plastic mulches. If you're curious about sustainable agricultural practices or looking for ways to improve your gardening techniques, this episode is packed with valuable insights! Listen now to discover more about the innovative world of hydromulch and its impact on agriculture. Note: intro and outro music credit to Zakhar Valaha from Pixabay https://pixabay.com/music/introoutro-motivational-ident-main-9923/