Campus Units

Entomology

Document Type

Article

Publication Version

Published Version

Publication Date

1987

Journal or Book Title

Journal of Agricultural and Food Chemistry

Volume

35

Issue

1

First Page

94

Last Page

99

DOI

10.1021/jf00073a022

Abstract

Laboratory experiments were conducted to investigate the enhanced degradation of isofenphos [ 1- methylethyl 24 [ethoxy[ (1-methylethyl)amino]phosphinothioyl]oxy] benzoate] in soil and to elucidate the microbiology of this phenomenon. [U-ring-'4CIIsofenphos was most rapidly degraded in Iowa cornfield soils that had a history of isofenphos insecticide use. Between 13 and 42% of an applied dose of 5 ppm remained as isofenphos after 4 weeks in soil with isofenphos use history, whereas between 63 and 75% remained in comparable nonhistory soils. Soils with enhanced isofenphos degradation contained an adapted population of soil microorganisms responsible for the degradation observed. Degradation products of isofenphos detected in cultures of adapted soil microorganisms included isopropyl salicylate, 14C02, and polar products. A bacterial strain (Pseudomonas sp.) isolated from soil with enhanced isofenphos degradation proved capable of utilizing isofenphos as a sole carbon source.

Comments

Reprinted (adapted) with permission from Journal of Agricultural and Food Chemistry, 35(1); 94-99. Doi: 10.1021/jf00073a022. 1987 American Chemical Society.

Copyright Owner

American Chemical Society

Language

en

File Format

application/pdf