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Monitoring of Toxicants Affecting Metamorphosis of Silkworm in Mulberry Leaves  

Park, Kyung-Hun (Department of Crop Life Safety, NIAST)
Park, Yeon-Ki (Department of Crop Life Safety, NIAST)
Lee, Hee-Dong (Department of Crop Life Safety, NIAST)
Park, Byung-Jun (Department of Crop Life Safety, NIAST)
Joo, Jin-Bok (Department of Crop Life Safety, NIAST)
Sohn, Bong-Hee (Depart of Agricultural Biology, NIAST)
Kang, Pil-Don (Depart of Agricultural Biology, NIAST)
Kim, Mi-Ja (Depart of Agricultural Biology, NIAST)
Seong, Su-Il (College of National Sciences, University of Suwon)
Publication Information
Journal of Sericultural and Entomological Science / v.46, no.2, 2004 , pp. 58-64 More about this Journal
Abstract
The current study was performed to clarify the pupation disorder symptoms in silkworm which herbicide, molinate has been regarded as a causal origin. Molinate residues in mulberry leaves was monitored in major rearing area of silkworm; Yeacheon, Sangju and Namwon. Detected range of the molinate in mulberry leaves was 0.002 to 0.013 mg/kg and detection frequency was 30.0 to 81.8%. Molinate concentration in the air of mulberry tree growing area was $0.004\;{\mu}g/m^3$. Water diluted solution of molinate at the concentration of 1, 10, 100 mg/l gave no abnormal symptoms in silkworm irrespective of spraying to silkworm or spiking to diet. Exposing the silkworm to the air containing 250, 2,500, and $10,000\;{\mu}g/m^3$ also revealed no abnormal symptom. These results illustrated that the abnormal growth of silkworm encountered in the field was not caused by pesticide contamination.
Keywords
Silkworm; Pupation disorder; Herbicide; Abnormal Symptom;
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