Kochia (Bassia scoparia (L.) A.J.Scott) eradication in Western Australia: a review

摘要

Kochia has been eradicated in Western Australia as a result of a dedicated eradication program that began in 1992. The last sightings were in March 2000. In general, kochia responded rapidly to eradication treatments (which comprised herbicides, grazing, burning or mechanical removal) and was eliminated from most sites after one or two years of treatment; however, plants continued to be found for up to seven years at a few sites. Most infestations were small (<10 ha) and of low density, but a few were >50 ha, the largest being 140 ha and 1000 ha in extent. There was no correlation between size of infestation and time to achieve eradication.