Abstract:
The presence in the Ord River Irrigation Area of Xanthomonas malvacearum (E.F. Sm.) Dowson, the causal organism of bacterial blight on cotton was further investigated. Group 2 bacterium was shown to be widespread on commercial crops, while Group 1 was only isolated on cotton grown from newly introduced seed. Resistance to the Group 2 bacterium was demonstrated within agronomically successful varieties.