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Blasting the Competition Away: Air-propelled Abrasive Grits for Weed Management in Organic Grain and Vegetable Crops

Join eOrganic for a webinar on using air-propelled abrasive grits for weed management in organic grain and vegetable crops. The webinar takes place on Tuesday, February 17th, 2015 at 11AM Pacific Time, 12PM Mountain, 1PM Central and 2PM Eastern Time. The webinar is free and open to the public, and advance registration is required.

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About the Webinar

This webinar will provide an introduction to the concept of weed management with air-propelled abrasive grits, or "weed blasting", in organic cropping systems. We will present information about the design of the first abrasive-grit applicator and initial field studies in corn, soybean, tomato, and pepper crops. Lastly, we will outline ongoing and future research objectives recently funded by the National Institute of Food and Agriculture Organic Research and Extension Initiative.

About the Presenters

Dr. Sam Wortman is an assistant professor in the Department of Crop Sciences at the University of Illinois. He studies urban and local food production and the goal of his research is to develop cropping systems and cultural practices that maximize productivity and profitability with minimal environmental impact.

Dr. Frank Forcella has been a Research Agronomist at the USDA-ARS Soils Lab in Morris, MN, for 30 years. His research specialties are weed biology, weed management, oilseed crops, and crop/pollinator interactions.

Dr. Sharon Clay is a weed scientist with a 20% teaching/80% research position at South Dakota State University. Over her career, she has worked in many aspects of weed biology and weed control including cover crops, resistant weeds, biocontrol, crop/weed interactions, and exploring critical weed free periods in many types of crops.

Dr. Daniel Humburg is an Agricultural Engineer and Professor in the department of Agricultural and Biosystems Engineering at South Dakota State University. He has 23 year of experience teaching engineering design of agricultural machines, and oversaw the design and fabrication of the first abrasive weed control system to be mounted on a tractor.

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This technology is supported in part by New Technologies for Agriculture Extension grant no. 2020-41595-30123 from the USDA National Institute of Food and Agriculture and membership funding. Any opinions, findings, conclusions, or recommendations expressed in the content are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture. For more information, please visit You can view the terms of useat

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