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THE DISTRIBUTION OF EELWORM IN A NATURALLY‐INFESTED STOCK OF NARCISSUS
Author(s) -
Hesling J. J.
Publication year - 1967
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.1365-3059.1967.tb00352.x
Subject(s) - biology , bulb , narcissus , horticulture , agronomy
SUMMARY A survey of a stock of narcissus naturally‐infested with Dity‐lenchus dipsaci showed that 11 per cent of the bulbs were infested. Bulbs were graded as rotten, ‘infested’ and ‘non‐infested’ by cutting across their necks, and, later, samples of the bulbs were dissected and eelworm damage scored. The eelworm populations in the bulbs and in the bulb trash were estimated. The variability of the eelworm population was very high. A few bulbs classed as infested contained no eelworms; and 23 per cent of apparently non‐infested bulbs harboured eelworm. Bulb trash contained eelworm at a rate of 210,000 eelworms per 1000 bulbs. The importance of bulb trash as a source of eelworm, and the influence of bulb husbandry methods on eelworm persistence are discussed.