THE SYSTEMIC PROPERTIES OF DIETHYL-S-2-(ETHYLTHIOETHYL) PHOSPHOROTHIOLATE (DEMETON-S) WITH REFERENCE TO THE CONTAMINATION OF NECTAR

被引：8

作者：

Thomas, W. D. E. ^{[1
]}

Jones, G. D. Glynne ^{[2
]}

机构：

[1] Univ Bristol, Long Ashton Res Stn, Bristol BS8 1TH, Avon, England

[2] Seale Hayne Agr Coll, Newton Abbot, England

来源：

ANNALS OF APPLIED BIOLOGY | 1955年 / 43卷 / 02期

关键词：

D O I：

10.1111/j.1744-7348.1955.tb02467.x

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

The fate of diethyl S-2-(ethylthioethyl) phosphorothiolate (demeton-S) in white mustard (Brassica alba), borage (Borago officinalis) and field beans (Vicia faba) has been followed over several weeks using the radioactive tracer technique. Radioassay of nectar samples from flowers which opened a few days after spraying showed that no unchanged demeton-S, but that small amounts of degradation products were present. The highest value for total radioactivity found in the nectar corresponded to 2.7 p.p.m. expressed as demeton-S. Radioassay of treated leaves and new growth after spraying confirmed that demeton-S is rapidly converted in the plant into two primary degradation products extractable by chloroform. Further breakdown is more rapid in new growth and appreciable quantities of the two primary products believed to be biologically active are retained by the treated leaves.

引用

页码：182 / 191

页数：10

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