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The persistence of Botrytis allii in field soil
Author(s) -
MAUDE R. B.,
BAMBRIDGE JUDITH M.,
PRESLY A. H.
Publication year - 1982
Publication title -
plant pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.928
H-Index - 85
eISSN - 1365-3059
pISSN - 0032-0862
DOI - 10.1111/j.1365-3059.1982.tb01275.x
Subject(s) - biology , clearance , persistence (discontinuity) , botrytis , crop , conidium , horticulture , agronomy , botrytis cinerea , medicine , geotechnical engineering , engineering , urology
Neck rot ( Botrytis allii ) affected bulbs of onions for 2 successive years when these were grown either in the field in soil from which an infected crop had been cleared 6 months previously or when infected debris was incorporated into field soil 6 months before the first crop was sown. These sources did not continue to cause infection of onion crops grown on the contaminated areas in the four succeeding years. The white storage tissue of onion bulbs (healthy or infected) persisted for less than 6 months in unsterile field soil contained in pots while sclerotia present in similar soil varied in their rate of decay but lost their capacity to produce conidiophores of B. allii after 6 months. In one sample, sclerotia were not recovered after 5 months; Gliocladium roseum , a mycoparasite, was present in this sample and may have affected survival.