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Korean J Parasitol > Volume 20(2):1982 > Article

Original Article
Korean J Parasitol. 1982 Dec;20(2):83-92. English.
Published online Mar 20, 1994.  http://dx.doi.org/10.3347/kjp.1982.20.2.83
Copyright © 1982 by The Korean Society for Parasitology
Recent demonstration of helminth eggs and larvae from vegetable cultivating soil
Dong Wik Choi,Mee Sun Ock and Jong Woo Suh
Department of Parasitology, Kyungpook National University, School of Medicine, Taegu, Korea.
Abstract

A survey on soil samples collected from the vegetable gardens and vinyl houses in the vicinity of Taegu was conducted for the discovery of helminth eggs and larvae from October 1981 to September 1982.

The samples collected were examined utilizing the "Commonly Employed" and Kamiya's techniques. The details of comparative features of larval nematodes are taken from the handbook of parasitology by Matsubasyhi et al. (1965). The results were compared with the data obtained from soil samples collected at the same area by Lee(1976).

Five kinds of helminth eggs, ascarid, hookworm, liver fluke, Trichostrongylidae, and whipworm and undetermined eggs were found. Of these, the incidence of ascarid eggs was found to be the highest, 70.5 per cent, followed by whipworm and hookworm eggs, 9.9 and 9.2 per cent, respectively.

The average number of ascarid eggs per 100 grams of soil was higher in the vinyl houses, compared with the number in the vegetable gardens than in the vinyl houses. By contrast, the number of hookworm eggs was relatively high in the vegetable gardens.

In the monthly incidences of helminth eggs, ascarid eggs were found every month, continuing fairly high incidences all the year round. However, hookworm eggs was found for 8 months from February and September, with low monthly incidences between 4.0 and 22.2 per cent, and Trichostrongylidae eggs were found for 6 months from April to September, with lower incidences than those of hookworm.

Three kinds of larval nematodes, the filariform and rhabditoid larvae of hookworm, Trichostrongylidae, and undetermined larvae were found in the soil of farms, but the incidences of larvae were quite low. The average number of larvae per 100 grams of soil was 0.05.

When the number of eggs per 100 grams of the soil in 1976 were compared with 1982, pronounced reduction of the number was encountered in all helminth eggs. However, the incidences and the average number of larvae per 100 grams of the soil were so low that it was impossible to compare the data between 1976 and 1982.

Figures


Fig. 1
Map of Kyungpook Province in Korea, showing Dongchon vegetable garders in Taegu city and Chilgok vegetable gardens in Chilgok county.

Tables


Table 1
Helminth eggs found in soil of farms in the vicinity of Taegu(1981-1982)


Table 2
Helminth eggs found from soil of vegetable gardens and vinyl houses in the vicinity of Taegu(1981-1982)


Table 3
Comparison of number of helminth eggs found per 100gm of soil in vegetable gardens and in vinyl houses(1981-1982)


Table 4
Monthly incidence of helminth eggs found in the vicinity of Taegu (1981-1982)


Table 5
Larval nematodes found in soil of vegetable gardens and vinyl house in Taegu(1981-1982)


Table 6
Monthly incidence of larval nematodes found in soil of farms in Taegu(1981-1982)


Table 7
Comparison of positive rates and numbers of helminth eggs found per 100gm of soil in the vicinity of Taegu in 1976 and 1982


Table 8
Comparison of numbers of helminth larvae found per 100gm of soil in the vicinity of Taegu in 1976 with 1982

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