Inter- and intra-seasonal variations in inoculum levels and incidence of potato gangrene (Phoma exigua var.foveata)

Autor:	R. A. Fox, E. Patricia Dashwood
Rok vydání:	1979
Předmět:	Gangrene Veterinary medicine biology Incidence (epidemiology) Growing season biology.organism_classification medicine.disease Crop Potato gangrene Botany medicine Phoma exigua var. foveata Agronomy and Crop Science Food Science
Zdroj:	Potato Research. 22:209-221
ISSN:	1871-4528 0014-3065
DOI:	10.1007/bf02357353
Popis:	The results of preliminary experiments showed that although tuber tissue increases in resistance during the growing season, incidence in the stored crop also progressively increases with later dates of harvesting. The hypothesis that increases of inoculum at the tuber surface with later dates of harvesting could account for this anomaly was satisfied in the first two of four years field experiments. In the third year, when inoculum levels were often very low and levels erratic, the incidence pattern was reversed being negatively correlated with time; in the fourth year no clear relationships were evident. In each year, the amount of gangrene developing at standard wounds was negatively correlated with time. These results are discussed in relationship to the sources of inoculum.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e77af80779641f19a253229eb877a3fd https://doi.org/10.1007/bf02357353 Zobrazit plný text záznamu Full text from SpringerLink