Bacterial blight of cotton in the Ord River

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.