On the effect of metaldehyde against the slug, Limax flavus L.

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  • メタアルデヒドのナメクジに対する効力について
  • メタアルデヒド ノ ナメクジ ニ タイスル コウリョク ニ ツイテ

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The experiments have been carried out to examine the effect of attractive slug killers containing metaldehyde. The slugs, Limax flavus L. used in this experiment were collected from the houses. Ten grammes of test chemical were set at the corner of 4 meters diametric circles each, and the following results were obtained. 1) Metaldehyde was proved highly attractive to slug. In case that the attractive slug killer was continuously applied for one week, the following effects for the slugs were got. Metaldehyde content The attractivity ratio 0.1% about 10% 0.5% about 30% 5.0% about 60% 2) Auxiliary materials such as rice-bran, wheat flour and sugar added to metaldehyde were not so influencial on the effect of attractive power. 3) The mortality ratio did not increased by mixing lindane, dieldrin, sodium pentachlorophenate, calcium arsenate, or diazinon with metaldehyde. 4) Metaldehyde had the ability to attract the slugs within 2 meters around. The most effective method was using the chemical in a small lump. On basing the above informations, the field examination was done for one week at Yoshizuka, Fukuoka city as follows : The lump of 10 grams attractive slug killer (3% of metaldehyde content) was set at the side of water way in kitchen. The slugs attracted were found dead or anesthetic within 50cm diametric circle. The most of slugs obtained were Limax flavus L. and a few of Jucilaria confusa Cockerell. The slugs got were totally 1, 410, and were 21 per house. By this examination, the attractive slug killer containing metaldehyde was proved to be highly effective in practical use.

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