Verticillium wilt of sage (Salvia officinalis L.)

Autor:	C. L. J. Ryan
Rok vydání:	1966
Předmět:	Agronomy Soil pH SAGE Potash food and beverages Biological dispersal Pith Verticillium dahliae Biology Verticillium wilt Weed control biology.organism_classification Agronomy and Crop Science
Zdroj:	Annals of Applied Biology. 58:71-79
ISSN:	1744-7348 0003-4746
DOI:	10.1111/j.1744-7348.1966.tb05072.x
Popis:	SUMMARY Verticillium dahliae Kleb. was established as the cause of wilt in sage. The disease causes leaf yellowing and necrosis from the base of the plant upwards, followed by defoliation. Microsclerotia found in the bark and sometimes the pith of severely affected stems are regarded as a diagnostic feature. Surveys confirmed the widespread occurrence of the disease in the Vale of Evesham and showed that it was most severe on heavy clay soils and in poorly drained areas but was not related to soil pH, phosphate or potash content. The rate of disease spread and the distribution of affected plants suggested that infected debris was the main source of disease dispersal, particularly as microsclerotia were abundant in many fallen leaves. It was shown that the disease could be disseminated in propagating material, and field evidence suggested that the pathogen could survive in the field in the absence of sage for at least 10 years. Replanted sage in affected areas generally contracted the disease within 1 year. Control measures suggested include careful stock selection, weed control and improved general hygiene.
Databáze:	OpenAIRE
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