Document Type

Thesis - Open Access

Award Date

1984

Degree Name

Master of Science (MS)

Department

Chemistry

First Advisor

Duane P. Matthees

Abstract

The widespread use of pesticides during the last two decades has played an important role in the development of today's agricultural system and is one of the major topics of modern science. It is also expected to assist in meeting the nutritional needs of the rapidly expanding populations in the world. The organophosphorus insecticides are among the most toxic pesticides employed for agricultural pest control. However, organophosphorus insecticides are usually rapidly degraded and eliminated. There has been a great amount of study on the chemical, microbial, and physical factors affecting degradation of organophosphorus insecticides, but degradation pathways and behavior have not really been understood which may be due to the variability of the soil selected and the environmental factors. In this study we attempted to understand the degradation of organophosphorus insecticides, Terbufos, Phorate, Fonofos, and Ethoprop, (1) in presence of antimicrobials such as PCNB, Bronopol, Benomyl which may affect populations at bacteria and fungi, and (2) effects on phosphatase activities in soil with time.

Library of Congress Subject Headings

Pesticides -- Biodegradation
Insecticides -- Biodegradation
Biodegradation

Format

application/pdf

Number of Pages

62

Publisher

South Dakota State University

Rights

No Copyright - United State
http://rightsstatements.org/vocab/NoC-US/1.0/

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