Abstract
A major challenge in onion production is weed control. In an effort to reduce pesticide use in bare-ground transplanted onions, we tested combinations of herbicides, flame weeding, and compost application at transplant. The municipal compost used at 2-inch depth reduced onion survival without reducing weed biomass at the end of the season. A single flame weeding pass mid-season did not reduce onion survival but did reduce total weed biomass in some treatments. Mid-season flame weeding may be a useful tool in combination with fewer herbicide applications or in multiple-flame-pass scenarios for transplanted onions.
Keywords
Propane, flame weeding, compost, EIQ, environmental impact quotient, Allium cepa L.
DOI
10.5703/1288284318714
Date of this Version
10-12-2026
Recommended Citation
Rohwer, Charlie and Hosch, Jesen, "Alternative weed control options for transplanted onions in Minnesota" (2026). Midwest Vegetable Trial Reports. Paper 300.
http://dx.doi.org/10.5703/1288284318714