Executive Summary :
Two Spotted Mite (TSM) is one of the most difficult horticultural pests to control and constitutes a very significant and real risk to stable commercial peppermint oil production. No integrated pest management protocols have previously been established in Australia to minimise this risk.
The incidence of Two Spotted Mite is increasing annually in commercial peppermint crops in both areas of Victoria and Tasmania. Significant yield loss occurred in 1998/99 and producers have largely attributed this loss to TSM. Under dry conditions high levels of Two Spotted Mite infestation result in excessive leaf loss, particularly lower leaf. This can have adverse effects on oil quality…..