Abstract
A greenhouse experiment was conducted to examine the effects of the herbicide sulfometuron on hay-scented fern (Dennstaedtiapunctilobula (Michx.) Moore) spore emergence. Sulfometuron was applied at rates ranging from 0.025 to 0.21 kg active ingredient per hectare to forest soil inoculated with hay-scented fern spores. Emergence based on the occurrence of prothalli was evaluated 30, 37, 44, and 52 days after inoculation. Sulfometuron at all rates completely controlled spore emergence. The data suggest that applications of sulfometuron could be effective in preventing the sexual reproduction of ferns in forest stands following soil disturbance.
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