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Narcissus eelworm Ditylenchus dipsaci: some aspects of its biology and control by thionazin


, : Narcissus eelworm Ditylenchus dipsaci: some aspects of its biology and control by thionazin. Acta Horticulturae 2(23): 249-254

Small numbers of Ditylenchus dipsaci may survive in narcissus bulbs after hot-water or thionazin dip treatment. The effects of these residual infestations on the bulbs are discussed.

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Related references

Hesling J.J., 1971: Narcissus m eelworm ditylenchus dipsaci some aspects of its biology and control by thionazin. Acta Horticulturae (Wageningen) 2(23): 249-253

Oliff, K.E., 1966: The control of plant parasitic nematodes by water-dispersed nematicides. III. Foliar application of thionazin to narcissus and tulip to control the stem eelworm Ditylenchus dipsaci (Kuhn) Fflipjev. One foliar application of thionazin to narcissus gave up to 99% control of D. dipsaci and at some dosage rates was still effective 3 years later. A similar treatment on tulips did not control the nematode. There was no evidence that thionazin caus...

Oliff, K.E., 1966: The control of plant parasitic nematodes by water-dispersed nematicides. III. Foliar application of thionazin to narcissus and tulip to control the stem eelworm, Ditylenchus dipsaci (Kiihn) Filipjev. One foliar application of thionazin to narcissus gave up to 99% control of Ditylenchus dipsaci and at some dosage rates was still effective 3 years later. A similar treatment on tulips did not control the nematode. There was no evidence that thion...

Oliff, K.E., 1966: The control of plant parasitic nematodes by water-dispersed nematicides. IV. The effect of dipping narcissus bulbs infested with Ditylenchus dipsaci (Kuhn) Filipjev in thionazin. Dipping narcissus bulbs in aqueous solutions of thionazin (Nemafos) controlled infestations' of D. dipsaci as well as did hot-water treatment. There was little damage to the bulbs and they made vigourous growth.

Tompsett A.A., 1975: The effect of pre warming pre soaking and hot water treatment on the growth of narcissus and control of stem eelworm ditylenchus dipsaci. Acta Horticulturae (Wageningen) 47: 165-170

Tompsett, A.A., 1975: The effect of pre-warming, pre-soaking and hot-water treatment on the growth of narcissus and control of stem eelworm (Ditylenchus dipsaci (Kuhn) Filipjev). Experiments with both infested and healthy narcissus bulbs have shown that warm storage (7 days at 30 deg C or 5 days at 35 deg C) immediately before hot-water treatment reduces all forms of crop damage but necessitates the use of pre-soaking and...

Webster, J.M., 1962: The spread of the stem and bulb eelworm (Ditylenchus dipsaci) populations in narcissus. The narcissus strain of Ditylenchus dipsaci spreads very slowly in the field but drainage and cultivation methods considerably accelerate the rate of spread. A bioassay method using onion seedlings was used to measure the soil populations of this...

Hastings, R.J., 1949: Concerning the movement of the bulb eelworm, Ditylenchus dipsaci (Kuhn) Filipjev, in narcissus bulbs. An examination of a consignment of English bulbs supported the theory that the spread of infection of bulb eelworm from scale to scale takes place by way of the basal plate, and that the infected scales turn brown. Discoloration, however, was only...

Thomas, P.R., 1958: Severe eelworm (Ditylenchus dipsaci (Kuhn) Filipjev) infestation of the narcissus variety Soleil d'Or. As well as the usual signs of attack, the narcissus Soleil d'Or may show slimy decay when heavily attacked by Ditylenchus dipsaci. Unlike other varieties the nematodes are mostly found in the foliage leaves including their bases and not in th...

Hastings, R.J.; Bosher, J.E.; Newton, W., 1952: The revival of the narcissus bulb eelworm, Ditylenchus dipsaci (Kuhn) Filipjev, from sublethal hot water treatments. Hastings et al. report that eelworm wool from narcissus was very resistant to a temperature of 110 degrees F. if dry. Eelworms become, with age, less resistant to hot-water treatment. With two successive heat treatments one week apart recovery was...