The Fate of Dcpa and Diazinon in Turf Using Model Ecosystems

The environmental fate of two pesticides, DCPA (Dacthal) and Diazinon, was examined using model ecosystems. Experiments were designed to determine the effectiveness of the model ecosystem in pesticide research and to measure the effect of thatch and irrigation frequency on the transformation and movement of the two pesticides. Results from the experiments with Dacthal indicated the herbicide did not move from the point of application. The only movement of the herbicide occurred after degradation of Dacthal to two nonbiologically active metabolites which were leached through the soil profile. Increasing irrigation caused an increased rate of Dacthal degradation. The presence of a thatch layer caused a variable effect on the rate of degradation of Dacthal.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Horticulture

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2014

Author dc:creator

• Branham, Bruce Eugene

• Biology, Plant Physiology

Identifier

(UMI)AAI8324513

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/71771