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KMID : 0352719920160020146
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Journal of Ginseng Research
1992 Volume.16 No. 2 p.146 ~ p.150
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Life History, Ginseng Damage and Chemical Control of the Snail Acusta despecta sieboldiana
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Abstract
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Life history, ginseng damage, and chemical control of the snail Acusta despecta sieboldiana Pfeiffer were investigated in the field and laboratory conditions from 1987 to 1990. Eggs of the snail were whitish globular and 1.93(0.09mm in diameter,
which
were deposited as egg mass composed of 28.4(1.54 eggs. Egg and period was 11.8(1.6 days under the laboratory condition. Most eggs were laid during mid July in the field. The snail had a life cycle of year and hibernated from November to April.
Significant ginseng damages by the snail (over 10% to the total number of plants) were observed only in the three to five year old ginseng fields with rice straw mulching. Based on the dates that the first ginseng damages were damages were
observed
and
on the questionary examination, ginseng damages seemed to occur from May to July. Metaldehyde (6%) bait showed reliable control effects on the snail.
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