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- W1990744492 abstract "Fronds of the ferns Blechnum giganteum, B. punctulatum var. punctulatum, Polystichum lucidum and Rumohra adiantiformis are harvested in the southern indigenous forests of South Africa for sale as florists' greenery. All these species are slow growing, producing from one to four fronds annually and having standing crops of between 3 and 13 fronds per plant under natural conditions. Herbivores damage over 50% of Blechnum fronds but only 20% of Rumohra fronds. Although these ferns are all evergreen, new fronds appear mainly in spring and early summer. Defoliation does not increase frond production, and defoliated plants bear smaller fronds. Harvesting of fronds more than once annually cannot be recommended for any of the study species. The effects of the harvesting season on frond production and interactions between the ferns and their competitors and predators should be investigated before these ferns are made available for commercial harvesting." @default.
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- W1990744492 date "1987-01-01" @default.
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- W1990744492 title "Effects of harvesting on four species of forest ferns in South Africa" @default.
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- W1990744492 doi "https://doi.org/10.1016/0006-3207(87)90116-9" @default.
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