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Narcissus Eelworm



P_narcissuseelworm1

Narcissus Eelworm

Usually appear in

Spring to Autumn.


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Caused By:-     Microspic nematodes Ditylenchus dipsaci

Description

Narcissus eelworm are also responsible for damage to bulbs and corms of Tulips and Hyacinths, Bluebells, Snowdrops, onions and other plants like beans and peas. The Narcissus Eelworm or Nematode (Ditylenchus dipsaci) is invisible to the human eye. It is only the results of their damage that can actually be seen. Eel worm activity appears as stunted growth and yellowish foliage, and gaps in large scale plantings and arrangements. This problem will get worse in successive years if nothing is done. Often the leaves of attacked plants do not showed external symptoms, and confirmation is not apparent without dissection. The microscopic eelworms live and feed within the bulbs and foliage, and spread to other plants through leaf contact or through the soil. If a bulb is cut in half lengthwise, rings of brown, dead tissue can be seen where the eelworms have been feeding. Infected scales are also soft and deteriorate readily during bulb storage. The bottoms of heavily infected bulbs may become detached. If there is ever a stunted or distorted leaf or flower with no obvious signs of pest or disease, then Eelworms should be suspected.
Picture by Central Science Laboratory, Harpenden Archive, British Crown, Bugwood.org.
See also these other Eelworms EELWORMS, ENCHYTRAEID WORMS, CHRYSANTHEMUM EELWORM, LEAF AND BUD EELWORM, ONION EELWORM, PHLOX EELWORM, POTATO CYST EELWORM, CHAFER GRUBS, DIEBACK, IRIS BORER CATERPILLARS, LEATHERJACKETS, LILY VIRUSES, NUT WEEVIL, PEA AND LEAF POD SPOT, ROOT KNOT EELWORMS, SLUGS, SNAILS, STEM AND BULB EELWORM, TOMATO CYST EELWORMS, VINE WEEVIL, WILTING, WIREWORM, WORMS.


Control

If eelworm is discovered, dig out and destroy affected bulbs and any other host plants nearby. One of the best ways of eliminating this pest is to carry out a Hot water treatment after the bulbs are dug up for storage. This involves storing the bulbs in as close a temperature to freezing as possible for a week then soaking the bulbs for an hour or two then bathing the bulbs in water at 45 degrees for three hours. Soaking the soil with certain insecticides or Amarillotox or Jays Fluid should help prevent this pest. Try not to replant in infected area, with susceptible plants for about four years. Soaking the bulbs in certain insecticides, before storage, should stop the spread of this pest. Pulling the flower stalks instead of cutting them at ground level is said to increase the chance of infestation by this pest.



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