Environmentally safe saponin-based pest management for gardens and nurseries
Developing plant-derived saponin products, such as teaseed and soapbark extracts, for managing invasive earthworms and grubs. These eco-friendly solutions aim to reduce pest impact while ensuring safety for beneficial soil insects and plants.
Overview
The University of Minnesota is advancing the use of plant-derived saponins, specifically teaseed meal and soapbark tree extract, for managing invasive earthworms and grubs in gardens and nurseries. These environmentally safe, biorational products offer a promising alternative to conventional chemical pesticides. The goal is to effectively reduce the economic and ecological impact of these pests while ensuring minimal effects on beneficial soil-dwelling insects and common garden plants.
Technical specifications
Key features:
- Utilizes saponins from teaseed and soapbark, which are known for their soap-like properties.
- Targets the protective lipid and mucus layers of grubs and earthworms, bringing them to the surface as they die.
- Teaseed meal is used as a soil amendment on golf courses.
- Soapbark extract is EPA-labeled for nematodes but not specifically for earthworms and grubs.
- Research includes bioassays to assess efficacy and non-target effects on beneficial insects and plants.
Technology readiness level
This pest management solution is at Technology Readiness Level 7, indicating that it has been validated in relevant environments and is approaching market readiness. Continued research will focus on confirming its safety and efficacy for broader application in urban gardens and nurseries.
About University of Minnesota
The University of Minnesota is a flagship, comprehensive public research university spanning multiple campuses, with a large research enterprise and clinical integration. Industry engages through co-located labs on the Twin Cities campuses, access to an academic health system for clinical translation, and pilot and field-testing facilities that speed scale-up. A statewide extension network and outreach centers provide real-world sites and data partnerships across Minnesota, while proximity to a dense medtech and Fortune 500 corridor enables frequent collaboration. Research is supported by competitive federal funding, including NIH, NSF, DOE, USDA, and DoD. A dedicated technology transfer office manages IP, licensing, sponsored research agreements, and startup incubation to speed commercialization.
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