Microbial degradation of propoxur in turfgrass soil
作者:
L.‐T. Ou,
P. Nkedi‐Kizza,
J.L. Cisar,
G.H. Snyder,
期刊:
Journal of Environmental Science and Health, Part B
(Taylor Available online 1992)
卷期:
Volume 27,
issue 5
页码: 545-564
ISSN:0360-1234
年代: 1992
DOI:10.1080/03601239209372800
出版商: Taylor & Francis Group
关键词: Propoxur;baygon;insecticide;turfgrass;soil;biodegradation;mineralization;metabolites;microorganisms
数据来源: Taylor
摘要:
This study was conducted to determine the degradation rates in turfgrass soil over a 12‐month period after a single field application of propoxur and to isolate microorganisms from the soil capable of degrading the insecticide. Soil samples were collected from a turfgrass experimental site near Fort Lauderdale, FL one week before the field application of propoxur, and over a 12‐month period after the field application. Mineralization rates in surface (0 ‐ 15 cm depth) and subsurface (15 ‐ 30 cm depth) soil samples collected before the field application were low. Mineralization in surface and subsurface samples collected 1, 6 and 8 months after the field application was much higher than for corresponding samples collected before the field application. Mineralization in the subsurface samples collected 12 months after the field application had reverted back to the similar rate for the corresponding sample collected before field application. Half‐life values (t1/2) for propoxur showed similar trends to the results of mineralization. After a single application of propoxur, degradation in turfgrass soil was enhanced. Such enhancement lasted less than 12 months for the subsurface, but more than 12 months for the surface. A strain ofArthrobactersp. capable of degrading propoxur was isolated from the soil.
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