Potential of native pathogens for control of saffron thistle

N.S. CrumpA, G.J. AshA and A. NikandrowB

A Centre for Conservation Farming, Charles Sturt University, PO Box 588, Wagga Wagga, New South Wales 2678, Australia.

B Agriculture and Veterinary Research Centre, Forest Road, Orange, New South Wales 2800, Australia.


Summary

Saffron thistle (Carthamus lanatus) is a widespread weed of cropping and pastoral areas throughout the wheat belt of Australia. It causes economic losses in both of these agricultural systems. Isolates of Phomopsis spp. have been collected from the field from both attacked thistles, and from seed from disease free plants. Data for pathogenicity tests on 23 isolates are presented, which suggest that five highly virulent strains have potential for development as bioherbicides.

 

Plant Protection Quarterly (1996) 11 (Supplement 2) 254-255.