Bacterial leaf spot of guar

In January 1963, severe leaf spotting was seen in a planting of guar (Cyamopsis tetragonoloba (L.) Taub.cv.Texsel) near Brisbane. Lesions were initially watersoaked but dried quickly to pale brown irregular spots with a narrow dark tan margin, surrounded by a diffuse pale green halo. Smaller punctiform spots uniformly dark were also present. Puckering was associated with the lesions on younger leaves

Bacterial leaf spot of cape gooseberry in Queensland

Bacterial leaf spot disease of cape gooseberry (Physalis peruviana) and a wild gooseberry (P. virginiana f. macrophysa) occur in south-eastern Queensland. The bacteria consistently isolated from diseased tissue were shown to belong to the genus Xanthomonas Dowson, 1939

Bacterial wilt of ginger in Queensland

Bacterial wilt (Pseudomonas solanacearum) of ginger was recorded in Queensland for the first time, Two types of wilt caused by biotypes 3 and 4 could be distinguished. Seven weeds commonly found in ginger plantings were found infected with biotype 3. The pathogenicity of biotype 4 to a number of hosts was determined and its reaction on ginger was compared with that of biotype 3 and also biotype 2 isolated from potato