Journal
BRYOLOGIST
Volume 125, Issue 2, Pages 352-361Publisher
AMER BRYOLOGICAL LICHENOLOGICAL SOC INC
DOI: 10.1639/0007-2745-125.2.352
Keywords
Pre-emergent herbicide effects; organic herbicides; moss; ferns; spore germination; pelargonic acid; cinnamon oil; clove oil; urban forest
Categories
Funding
- Institute for Healthy Water
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Herbicide application can have negative effects on non-target plants, but bioherbicides may be more environmentally friendly. Mosses emerge and establish slower in soil treated with cinnamon plus clove oil compared to pelargonic acid or glyphosate. Glyphosate negatively affects fern gametophyte establishment, while bioherbicides do not.
Herbicides are used extensively to control invasive plants in natural areas but, herbicide application often has undesired effects on non-target plants. Using a lab bioassay, we investigated the impacts of glyphosate and two bioherbicides (cinnamon plus clove oil, and pelargonic acid) on the establishment of bryophyte and fern propagules from an urban woodland park soil propagule bank. Mosses were slower to emerge and establish in soil treated with cinnamon plus clove oil than soil treated with pelargonic acid or glyphosate. Fern gametophyte establishment was negatively affected by glyphosate but not by the two bioherbicides. Results from this study confirmed those of a previous field study indicating that an herbicide containing pelargonic acid could be useful for controlling non-native plants in locations suspected of harboring high biodiversity in soil propagule banks.
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