New Zealand Journal of Crop and Horticultural Science abstracts

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Short communication
Devitalisation of imported horsetail(Equisetum hyemale)

M. F. Large
D. J. Blanchon
M. L. Angus

School of Natural Sciences
Unitec New Zealand
Private Bag 92 025
Auckland, New Zealand
email: mlarge@unitec.ac.nz

Abstract Equisetum hyemale is a popular import for use in floristry. Anecdotal evidence from florists suggested, that despite Ministry of Agriculture and Forestry (MAF) requirements to devitalise imported plant material, Equisetum stems remain viable and readily form roots when placed in water or floristry foam. Imported stem material was tested and confirmed as being capable of producing roots and shoots. Fresh material of Equisetum was treated using the devitalisation techniques prescribed by MAF and was killed. Discrepancies are noted between the importation requirements for the United States versus Australasian material.

Keywords horsetail; Equisetum hyemale;floristry; biosecurity; devitalisation; glyphosate; foliage

New Zealand Journal of Crop and Horticultural Science, 2006, Vol. 34: 151–153
0014–0671/06/3402–0151      © The Royal Society of New Zealand 2006
H05112; Online publication date 12 April 2006. Received 21 September 2005; accepted 28 February 2006

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