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On the lethal effect of Sulphur Dioxide on eelworm Cysts adherent to Seed Potatoes

Published online by Cambridge University Press:  18 November 2009

D. W. Fenwick
D. W. Fenwick
Affiliation:
Institute of Agricultural Parasitology, St. Albans.
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Extract

1. “In vitro” experiments show that sulphur dioxide is very lethal to cysts of the potato eelworm. Its effect is very much more potent under moist conditions than under dry. The other factors, concentration and time are secondary in their action as compared with humidity.

2. Fumigation of seed potatoes for 24 hours under conditions appropriate to bacterial fumigation results in the complete destruction of the cysts adherent to them.

3. The sulphur dioxide fumigation is without any significant effect on the tubers provided it is carried out previous to chitting. It has little if any effect on the chitting power of the potato but is lethal to any chits already formed.

Type
Research Papers
Information
Journal of Helminthology , Volume 20 , Issue 1-2 , August 1942 , pp. 41 - 50
Copyright
Copyright © Cambridge University Press 1942

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References

Anon, 1934.—The spread of Potato Eelworm in Consignments of Seed Potatoes.—Seale-Hayne Agric. Coll., Dept. of Plant Path., 10th Ann. Rep., Pamph. No. 42, pp. 5–6. (W.L. 18579b.)Google Scholar
Franklin, M. T., 1939.—The Treatment of Seed Potatoes for the Destruction of Adherent Heterodera schachtii Cysts.—J. Helminth., XVII (2), 113–126. (W.L. 11224b.)CrossRefGoogle Scholar