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Preliminary studies on Ramularia crupinae sp. nov. as a potential biological control agent for common crupina ( Crupina vulgaris ) in the USA
Author(s) -
HASAN S.,
SOBHIAN R.,
KNUTSON L.
Publication year - 1999
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1999.tb00878.x
Subject(s) - biology , weed , biological pest control , asteraceae , botany , fungus
SUMMARY Common crupina, Crupina vulgaris (Asteraceae), is an alien weed of pastures and disturbed noncrop lands in the western USA. Research is underway in Europe to search for the natural enemies to control the weed. Among various natural enemies attacking C vulgaris , a new fungal species, Ramularia crupinae , has been found to cause serious damage to the weed. The fungus has been grown on various media and a modified V8 juice agar has proved to be suitable for both growth and sporulation. Greenhouse and field studies have shown that R. crupinae can kill infected leaves, thus reducing the plant growth, and in severe cases can kill the young plants. During preliminary host‐range tests using various members of the Asteraceae, including artichoke and safflower, the fungus attacked only C. vulgaris.