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Potential of Air-Propelled Abrasives for Selective Weed Control

Published online by Cambridge University Press:  20 January 2017

Frank Forcella*
Affiliation:
North Central Soil Conservation Research Laboratory, U.S. Department of Agriculture–Agricultural Research Service, 803 Iowa Avenue, Morris, MN 56267
*
Corresponding author's E-mail: Frank.Forcella@ars.usda.gov.

Abstract

Novel forms of selective weed control are needed by many types of growers, but especially by organic growers who are restricted from using synthetic herbicides. Abrasive grit made from corn cobs was expelled from a sand blaster at 517 kPa pressure and aimed at plants of common lambsquarters and corn positioned 300 mm distant. Most small weed plants were killed by one split-second blast of grit, but corn plants suffered little damage by the same treatment. Air-propelled grit made from agricultural residues possibly could be used for selective nonchemical weed control without the need for soil tillage.

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Copyright
Copyright © Weed Science Society of America 

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