Chemical control of blue periwinkle (Vinca major L.) in Croajingolong National Park, Victoria

K.L. TwyfordA,C and G.S. BaxterB
A Department of Natural Resources and Environment, Gippsland Region, Orbost, Victoria 3888, Australia.
B School of Natural and Rural Systems Management, The University of Queensland, Gatton College, Queensland 4345, Australia.
C Present address: National Parks and Wildlife South Australia, PO Box 39, Kingscote, South Australia 5223, Australia.
Blue periwinkle (Vinca major) is a serious environmental weed of protected areas in eastern Australia. A trial to evaluate the effectiveness of glyphosate, metsulfuron methyl, clopyralid and triclopyr for controlling this weed was undertaken east of Mallacoota Inlet within Croajingolong National Park, Victoria. The herbicides had their greatest effect six months after treatment. Brown-out at that time was 96% with glyphosate at 360 g 100 L-1, 59% with triclopyr at 126 g 100 L-1, 23% with clopyralid at 150 g 100 L-1 and negligible with metsulfuron methyl at 6 g 100 L-1.


Plant Protection Quarterly (1999) 14 (2) 47-50.